
Professor Sarah Johnson
Professor
School of Electrical Engineering and Computing (Electrical and Computer Engineering)
- Email:sarah.johnson@newcastle.edu.au
- Phone:(02) 4921 6028
Engineering a better future
Professor Sarah Johnson is applying engineering solutions to a range of end-user’s problems.
The basis of Sarah’s research is digital information and digital signals processing. She has developed an international profile in error correction codes, which are essential to establishing and maintaining secure and reliable transmission of data, which improve the reliability and quality of digital technologies such as television, mobile phones and the Internet.
"Just about any time we communicate, whether it is a text message to a friend or a critical communication, we are using error correction to get that message through," Sarah says.
Sarah’s fundamental contribution to secure information communication systems has demonstrated national and international impact, in both theory and end user applications. Her works in Low Density Parity Check Codes have significant implications for communications reliability, utilisation and simplified implementation.
In addition to making fundamental discoveries, Sarah actively engages with industry, most significantly collaborating with Quintessence Laboratories, developing ultra-secure quantum key enabled communication. This aims for the realisation and production of data communications systems with guaranteed security properties based on quantum technology.
She is also extensively engaged in applying digital signal processing in the field of biomedical engineering, with a focus on developing new technologies to improve the brain’s recovery following injury or disease. Sarah is currently working on new sensor-enhanced motor-learning technology to assist during recovery from stroke.
A University of Newcastle electrical engineering alumna, Sarah was awarded her PhD in 2004 and launched her research career with a fellowship at NICTA, Australia's Information and Communications Technology Research Centre of Excellence. She is now Associate Professor at the University of Newcastle and her specialty field is digital information and digital signals processing which has widespread application across a number of fields.
Sarah focusses on creating solutions through using mathematical algorithms and collaborating across a number of disciplines. Working with colleagues in computer science, electrical engineering and biomedical sciences Sarah aims to deliver the keys to a clearer image of the future.
Technology-enhanced rehabilitation
Collaborating with colleagues from biomedical sciences, neuroscience, engineering and rehabilitation experts, Sarah is applying information and digital signals processing technologies to develop a sensor enhanced motor learning approach to augment physiotherapy treatment and improve rehabilitation outcomes for stroke patients.
Firstly, the SEML (sensor-enhanced motor-learning) project aims to support patients to optimize their physiotherapy exercises in a non-clinical environment, such as their own home. A visual model of the ideal movements for each exercise is modelled through readings from a movement tracking suit, which uses gyroscopes that track range motion (the suit is worn by a physiotherapist who demonstrates the exercises). This expert model is then incorporated into software that the patient can use in their home. The patient then does their exercises whilst wearing the movement tracking sensors and the software provides real-time guided feedback on how to adjust their actions. The system also records the patient’s performance for review by an expert.
Secondly, the Cerebrovascular Health Project aims to better understand the effectiveness of rehabilitation on the recovery of the brain. Non-invasive NIR (near-infrared) imaging is used to shine light on the brain to measure activity in different areas. As a particular part of brain becomes active blood flow increases oxygen levels. Because the oxygenated areas reflect and refract the light differently, the infrared image can show which areas of the brain are active. If the infrared imaging is captured during the physiotherapy exercises, feedback can be provided on which movements are working to stimulate brain function.
Women in STEM
As an engineer, it’s no surprise that Sarah has a keen interest in promoting STEM. This led to her co-found HunterWISE, a group dedicated to promoting and supporting girls and women in STEM.
HunterWISE features two interlinked actions aimed at increasing the number of girls and women participating in STEM through a school program and a series of networking events across the Hunter for women STEM professionals. This approach is designed to steer women toward STEM, and encourage their retention in the STEM pipeline.
In 2017 Sarah was awarded a NSW Premier’s Prize for Excellence in Engineering & Communications Technologies. “It is a great privilege to receive this award which recognises the importance of Science and Engineering to our community.”
“I really want to advance the biomedical projects to get it to a point where we can send SEML home with patients and really make a difference to their recovery.”
Engineering a better future
Associate Professor Sarah Johnson performs research in the fields of signal processing, error correction coding and information theory.
Technology troubleshooter
Dr Sarah Johnson designs complex computer codes that work behind the scenes to ensure digital communications are clearly conveyed.
Dr Sarah Johnson enjoys solving mathematical problems and her research field of error correction coding provides an endless array of numerical challenges. Error correction technologies are fundamental to digital communications, from DVD players to the National Broadband Network, and in most cases work imperceptibly in the background to correct corruptions in transmission so quickly that users are never aware of a problem.
"Just about any time we communicate, whether it is a text message to a friend or a critical communication, we are using error correction to get that message through," Johnson advises.
Error correction detects and rectifies corruptions caused to digital communications by what is broadly termed 'noise'– interference from factors such as stormy weather, physical barriers in the landscape or competition with nearby digital devices. It does not always work, as evidenced when mobile phone reception fails or a television picture momentarily drops out, but without it our communications would be far less reliable.
Johnson's research with the University's Signal Processing and Microelectronics group focuses on developing new error correction codes for next-generation communication technologies. "With digital technology expanding so rapidly, there is a growing need for better and faster error correction," she explains. "Technology that was unimaginable 10 years ago is now pushing the boundaries of our current approaches to correcting digital errors."
Designing error correction codes involves complex algorithmic computations but Johnson describes the fundamental process as adding extra numerical information to a digital message – a 'checking sequence' that bears a mathematical relationship to the original message – which can then be used to detect errors and recover the original data.
A University of Newcastle electrical engineering scholar, Johnson was awarded her PhD in 2003 and launched her research career with a fellowship at NICTA, Australia's Information and Communications Technology Research Centre of Excellence. She is now a senior researcher at the University, supported by an Australian Research Council (ARC) Future Fellowship. Her specialty field is iterative error correction coding, which has widespread application in cellular communications, digital video broadcasting and wi-fi networks.
Johnson has published in high-impact IEEE (Institute of Electrical and Electronics Engineers) journals and authored a book in 2009 titled Iterative Error Correction, through Cambridge University Press. It discusses the theory, design and implementation of powerful coding techniques known as turbo, low-density parity-check and repeat-accumulate codes.
Johnson also has a strong research interest in information theory – the analysis of the limits of error correction coding – and is working on an ARC-funded project with a University of Newcastle colleague, Dr Lawrence Ong, studying best-case scenarios for multiple-user communication networks.
"It is relatively easy to determine the best-case scenario for error correction in a traditional situation where there is only one person sending and one receiving," Johnson asserts. "It is a lot more complicated to design and understand fundamental limits in networks that have multiple people trying to communicate at the same time, which is increasingly the way people communicate today."
In a novel project, Johnson has a commercial consultancy with cyber defence company QuintessenceLabs to design a unique cryptography application for their ultra-secure electronic key systems.
"Error correction plays a vital role in so many technologies that there is an endless stream of applications for the work I do. There are so many exciting problems that keep me motivated every day."
Visit the Centre for Bioinformatics, Biomarker Discovery and Information-Based Medicine
Technology troubleshooter
Dr Sarah Johnson designs complex computer codes that work behind the scenes to ensure digital communications are clearly conveyed.
Career Summary
Biography
Sarah Johnson graduated from the University of Newcastle with a Bachelor degree in Electrical Engineering (1st class Honors and university medal) in 2000 and PhD in 2004. She has been awarded a CSIRO postgraduate scholarship, an Australian Research Council (ARC) Postgraduate Research Fellowship and an ARC Future Fellowship. She has published over 100 academic research articles and a book with Cambridge University Press. Her research has been supported by eight ARC Discovery grants, an ARC Linkage Project and several industry-sponsored projects. She was recently awarded the NSW Premier's prize for Excellence in Engineering and Information and Communications Technology. Sarah is currently Professor and Deputy Head of School (Research) in the School of Electrical Engineering and Computing at the University of Newcastle.
Research
I perform research in the fields of signal processing and information theory applied to communications and biomedical technologies:
Secure Communications
This research focuses on the design, analysis and application of iterative error correction codes to enable the communication of a digital message without error despite an imperfect communications medium. Such codes are used in a large range of applications including mobile phones, digital television, wireless local area networks, deep space communications, long haul optical communications and hard disk storage. My current research focus is on code design for Machine-to-Machine (M2M) communications and communications networks more broadly.
Biomedical technologies
Collaborating with colleagues from biomedical sciences, neuroscience and rehabilitation, we are applying systems engineering to develop improved approach to rehabilitation outcomes for patients. The project aims to support patients to optimize their physiotherapy exercises without expert supervision and in a non-clinical environment, such as their own home.
Secondly, non-invasive NIR (near-infrared) imaging is used to shine light on the brain to measure activity in different areas. As a particular part of brain becomes active blood flow increases oxygen levels. Because the oxygenated areas reflect and refract the light differently, the infrared image can show which areas of the brain are active. If the infrared imaging is captured during the physiotherapy exercises, feedback can be provided on which movements are working to stimulate brain function.
A full list of publications is available at google scholar
Qualifications
- PhD (Electrical Engineering), University of Newcastle
- Bachelor of Engineering (Electrical), University of Newcastle
Keywords
- Biomedical signal processing
- Error correction coding
- Information theory
- Signal processing
Languages
- English (Fluent)
Professional Experience
UON Appointment
Title | Organisation / Department |
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Professor | University of Newcastle School of Electrical Engineering and Computing Australia |
Professor | University of Newcastle School of Electrical Engineering and Computing Australia |
Academic appointment
Dates | Title | Organisation / Department |
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1/6/2004 - 1/6/2007 |
Australian Postdoc Fellowship (APD) ARC - Research Fellowships Scheme |
Australia Research Council Australia |
1/1/2006 - 31/12/2006 | Membership - International Technical Program Committee IEEE VTC | International Technical Program Committee IEEE VTC Australia |
1/1/2004 - | Membership - Institute of Electrical and Electronic Engineers (IEEE) | Institute of Electrical & Electronic Engineers (IEEE) Australia |
1/1/2013 - | Membership - Organising Committee IEEE International Conference on Communications | Organising Committee IEEE International Conference on Communications Australia |
1/1/2013 - | Membership - International Technical Program Committee IEEE Information Theory Workshop (ITW) | International Technical Program Committee IEEE Information Theory Workshop (ITW) Australia |
1/1/2013 - | Membership - International Technical Program Committee IEEE International Symposium on Turbo Codes | International Technical Program Committee IEEE International Symposium on Turbo Codes Australia |
1/1/2012 - 31/12/2012 | Membership - International Technical Program Committee IEEE International Symposium on Turbo Codes | International Technical Program Committee IEEE International Symposium on Turbo Codes Australia |
1/1/2012 - 31/12/2012 | Membership - International Technical Program Committee IEEE PIMRC | International Technical Program Committee IEEE PIMRC Australia |
1/3/2012 - 1/12/2015 | Future Fellow | University of Newcastle Australia |
1/6/2007 - 1/3/2012 |
Senior Research Fellow UoN Research Fellowship |
University of Newcastle Australia |
1/8/2003 - 1/7/2004 | Research Fellow | National ICT Australia Australia |
Awards
Research Award
Year | Award |
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2007 |
Pro Vice-Chancellor’s Award for Research Excellence University of Newcastle |
Publications
For publications that are currently unpublished or in-press, details are shown in italics.
Highlighted Publications
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2003 |
Johnson SJ, Weller SR, 'A Family if Irregular LDPC Codes with low Encoding Complexity', IEEE Communication Letters, 7 79-81 (2003) [C1]
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2010 |
Johnson SJ, Iterative Error Correction: Turbo, Low-Density Parity-Check and Repeat-Accumulate Codes, Cambridge University Press, Cambridge, UK, 356 (2010) [A2]
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2010 |
Ong LL, Johnson SJ, Kellett CM, 'An optimal coding strategy for the binary multi-way relay channel', IEEE Communications Letters, 14 330-332 (2010) [C1]
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2011 |
Ong LL, Johnson SJ, Kellett CM, 'The capacity region of multiway relay channels over finite fields with full data exchange', IEEE Transactions on Information Theory, 57 3016-3031 (2011) [C1]
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2013 |
Johnson S, Lechner G, 'Spatially Coupled Repeat-Accumulate Codes', IEEE COMMUNICATIONS LETTERS, 17 373-376 (2013) [C1]
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2017 |
Shirvanimoghaddam M, Condoluci M, Dohler M, Johnson SJ, 'On the Fundamental Limits of Random Non-Orthogonal Multiple Access in Cellular Massive IoT', IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 35 2238-2252 (2017) [C1]
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2017 |
Shirvanimoghaddam M, Dohler M, Johnson SJ, 'Massive Non-Orthogonal Multiple Access for Cellular IoT: Potentials and Limitations', IEEE COMMUNICATIONS MAGAZINE, 55 55-61 (2017) [C1]
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2017 |
Shirvanimoghaddam M, Dohler M, Johnson S, 'Massive Multiple Access Based on Superposition Raptor Codes for M2M Communications', IEEE Transactions on Wireless Communications, 16 (2017) [C1]
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Book (1 outputs)
Year | Citation | Altmetrics | Link | ||
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2010 |
Johnson SJ, Iterative Error Correction: Turbo, Low-Density Parity-Check and Repeat-Accumulate Codes, Cambridge University Press, Cambridge, UK, 356 (2010) [A2]
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Chapter (1 outputs)
Year | Citation | Altmetrics | Link | ||
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2003 |
Johnson SJ, Weller SR, 'Low-density parity-check codes: Design and decoding', Wiley Encyclopedia of Telecommunications, Wiley Interscience, Brisbane 1-18 (2003) [B1]
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Journal article (71 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2021 |
Afkhami R, Wong R, Ramadan S, Walker FR, Johnson S, 'Indexing Cerebrovascular Health Using Transcranial Doppler Ultrasound', Ultrasound in Medicine and Biology, (2021) © 2020 World Federation for Ultrasound in Medicine & Biology Transcranial Doppler (TCD) blood flow velocity has been extensively used in biomedical research as it provides a... [more] © 2020 World Federation for Ultrasound in Medicine & Biology Transcranial Doppler (TCD) blood flow velocity has been extensively used in biomedical research as it provides a cost-effective and relatively simple approach to assess changes in cerebral blood flow dynamics and track cerebrovascular health status. In this article we introduce a new TCD-based timing index, TITCD, as an indicator of vascular stiffening and vascular health. We investigate the correlations of the new index and the existing indices, namely the pulsatility index and the augmentation index, with age, cardiorespiratory fitness (CRF) and magnetic resonance imaging (MRI) blood flow pulsatility index (PIMRI). Notably, the new index showed stronger correlations with CRF (r = -0.79) and PIMRI (r = 0.53) compared with the augmentation index (r = -0.65 with CRF and no significant correlation with PIMRI) and the pulsatility index (no significant correlations with CRF or PIMRI), and a similar correlation with age as the augmentation index. The clearer relationship of the proposed timing index with vascular aging factors underlines its utility as an early indicator of vascular stiffening.
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2020 |
Cochrane JA, Flynn T, Wills A, Walker FR, Nilsson M, Johnson SJ, 'Clinical Decision Support Tools for Predicting Outcomes in Patients Undergoing Total Knee Arthroplasty: A Systematic Review', Journal of Arthroplasty, (2020) © 2020 Elsevier Inc. Background: Total knee arthroplasty is the standard surgical treatment for end-stage osteoarthritis. Although widely accepted as a successful procedure, appro... [more] © 2020 Elsevier Inc. Background: Total knee arthroplasty is the standard surgical treatment for end-stage osteoarthritis. Although widely accepted as a successful procedure, approximately 30% of patients are not satisfied due to non-optimal postoperative outcomes. Clinical decision support tools that are able to accurately predict post-surgery outcomes would assist in providing individualized advice or services to help alleviate possible issues, resulting in significant benefits to both the healthcare system and individuals. Methods: Five databases (Ovid Medline, Ovid EMBASE, CINAHL complete, Cochrane Library, and Scopus) were searched for the key phrases ¿knee replacement¿ or ¿knee arthroplasty¿ and ¿decision support tool,¿ ¿decision tool,¿ ¿predict* tool,¿ ¿predict* model,¿ ¿algorithm¿ or ¿nomogram.¿ Searches were limited to peer-reviewed journal articles published between January 2000 and June 2019. Reference lists of included articles were examined. Authors came to a consensus on the final list of included articles. Results: Eighteen articles were included for review. Most models reported low predictive success and inability to externally validate. Both candidate and final predictor variables were inconsistent between studies. Only 1 model was considered strongly predictive (AUROC >0.8), and only 2 studies were able to externally validate their developed model. In general, models that performed well used large patient numbers, were tested on similar demographics, and used either nonlinear input transformations or a completely nonlinear model. Conclusion: Some models do show promise; however, there remains the question of whether the reported predictive success can continue to be replicated. Furthermore, clinical applicability and interpretation of predictive tools should be considered during development.
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2020 |
Shahab MB, Johnson SJ, Shirvanimoghaddam M, Chafii M, Basar E, Dohler M, 'Index Modulation Aided Uplink NOMA for Massive Machine Type Communications', IEEE Wireless Communications Letters, 9 2159-2162 (2020) [C1]
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2020 |
Afkhami RG, Walker FR, Ramadan S, Johnson S, 'A Dynamic Model of Brain Hemodynamics in Near-Infrared Spectroscopy', IEEE Transactions on Biomedical Engineering, 67 2103-2109 (2020) [C1]
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2020 |
Shahab MB, Abbas R, Shirvanimoghaddam M, Johnson SJ, 'Grant-free Non-orthogonal Multiple Access for IoT: A Survey', IEEE Communications Surveys & Tutorials, 22 1805-1838 (2020) [C1]
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2020 |
Ditton E, Johnson S, Hodyl N, Flynn T, Pollack M, Ribbons K, et al., 'Improving Patient Outcomes Following Total Knee Arthroplasty: Identifying Rehabilitation Pathways Based on Modifiable Psychological Risk and Resilience Factors', Frontiers in Psychology, 11 (2020) [C1]
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2019 |
Abdolhoseini M, Kluge MG, Walker FR, Johnson SJ, 'Segmentation, Tracing, and Quantification of Microglial Cells from 3D Image Stacks', SCIENTIFIC REPORTS, 9 (2019) [C1]
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2019 |
Thapa C, Ong L, Johnson SJ, Li M, 'Structural characteristics of two-sender index coding', Entropy, 21 (2019) [C1]
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2019 |
Abdolhoseini M, Kluge MG, Walker FR, Johnson SJ, 'Segmentation of Heavily Clustered Nuclei from Histopathological Images', SCIENTIFIC REPORTS, 9 (2019) [C1]
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2019 |
Pietrogrande G, Zalewska K, Zhao Z, Abdolhoseini M, Chow WZ, Sanchez-Bezanilla S, et al., 'Low oxygen post conditioning prevents thalamic secondary neuronal loss caused by excitotoxicity after cortical stroke', SCIENTIFIC REPORTS, 9 (2019) [C1]
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2019 |
Pietrogrande G, Zalewska K, Zhao Z, Johnson SJ, Nilsson M, Walker FR, 'Low Oxygen Post Conditioning as an Efficient Non-pharmacological Strategy to Promote Motor Function After Stroke', Translational Stroke Research, 10 402-412 (2019) [C1]
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2019 |
Li M, Ong L, Johnson SJ, 'Cooperative Multi-Sender Index Coding', IEEE Transactions on Information Theory, 65 1725-1739 (2019) [C1]
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2019 |
Kluge MG, Abdolhoseini M, Zalewska K, Ong LK, Johnson SJ, Nilsson M, Walker FR, 'Spatiotemporal analysis of impaired microglia process movement at sites of secondary neurodegeneration post-stroke', JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM, 39 2456-2470 (2019) [C1]
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2019 |
Shirvanimoghaddam M, Mohammadi MS, Abbas R, Minja A, Yue C, Matuz B, et al., 'Short Block-Length Codes for Ultra-Reliable Low Latency Communications', IEEE Communications Magazine, 57 130-137 (2019) [C1]
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2019 |
Clazzer F, Matuz B, Jayasooriya S, Shirvanimoghaddam M, Johnson SJ, 'Protograph LDPC Code Design for Asynchronous Random Access', ALGORITHMS, 12 (2019) [C1]
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2018 |
Pietrogrande G, Mabotuwana N, Zhao Z, Abdolhoseini M, Johnson SJ, Nilsson M, Walker FR, 'Chronic stress induced disturbances in Laminin: A significant contributor to modulating microglial pro-inflammatory tone?', BRAIN BEHAVIOR AND IMMUNITY, 68 23-33 (2018) [C1]
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2018 |
Jayasooriya S, Shirvanimoghaddam M, Johnson SJ, 'A Design of Reconfigurable Raptor Codes for Wide SNR Ranges Using a Multi-Edge Framework', IEEE COMMUNICATIONS LETTERS, 22 1532-1535 (2018) [C1]
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2018 |
Ong LK, Chow WZ, Tebay C, Kluge M, Pietrogrande G, Zalewska K, et al., 'Growth Hormone Improves Cognitive Function After Experimental Stroke', STROKE, 49 1257-+ (2018) [C1]
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2018 |
Zalewska K, Pietrogrande G, Ong LK, Abdolhoseini M, Kluge M, Johnson SJ, et al., 'Sustained administration of corticosterone at stress-like levels after stroke suppressed glial reactivity at sites of thalamic secondary neurodegeneration', Brain, Behavior, and Immunity, 69 210-222 (2018) [C1] © 2017 Elsevier Inc. Secondary neurodegeneration (SND) is an insidious and progressive condition involving the death of neurons in regions of the brain that were connected to but ... [more] © 2017 Elsevier Inc. Secondary neurodegeneration (SND) is an insidious and progressive condition involving the death of neurons in regions of the brain that were connected to but undamaged by the initial stroke. Our group have published compelling evidence that exposure to psychological stress can significantly exacerbate the severity SND, a finding that has considerable clinical implications given that stroke-survivors often report experiencing high and unremitting levels of psychological stress. It may be possible to use one or more targeted pharmacological approaches to limit the negative effects of stress on the recovery process but in order to move forward with this approach the most critical stress signals have to be identified. Accordingly, in the current study we have directed our attention to examining the potential effects of corticosterone, delivered orally at stress-like levels. Our interest is to determine how similar the effects of corticosterone are to stress on repair and remodelling that is known to occur after stroke. The study involved 4 groups, sham and stroke, either administered corticosterone or normal drinking water. The functional impact was assessed using the cylinder task for paw asymmetry, grid walk for sensorimotor function, inverted grid for muscle strength and coordination and open field for anxiety-like behaviour. Biochemically and histologically, we considered disturbances in main cellular elements of the neurovascular unit, including microglia, astrocytes, neurons and blood vessels using both immunohistochemistry and western blotting. In short, we identified that corticosterone delivery after stroke results in significant suppression of key microglial and astroglial markers. No changes were observed on the vasculature and in neuronal specific markers. No changes were identified for sensorimotor function or anxiety-like behaviour. We did, however, observe a significant change in motor function as assessed using the inverted grid walk test. Collectively, these results suggest that pharmacologically targeting corticosterone levels in the future may be warranted but that such an approach is unlikely to limit all the negative effects associated with exposure to chronic stress.
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2018 |
Li M, Ong L, Johnson SJ, 'Multi-Sender Index Coding for Collaborative Broadcasting: A Rank-Minimization Approach', IEEE Transactions on Communications, 67 1452-1466 (2018) [C1]
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2017 |
Asadi B, Ong L, Johnson SJ, 'The DoF Region of the Three-Receiver Gaussian MIMO Broadcast Channel With Receiver Message Side Information', IEEE TRANSACTIONS ON COMMUNICATIONS, 65 2000-2010 (2017) [C1]
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2017 |
Jayasooriya S, Shirvanimoghaddam M, Ong L, Johnson SJ, 'Joint optimisation technique for multi-edge type low-density parity-check codes', IET COMMUNICATIONS, 11 61-68 (2017) [C1]
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2017 |
Shirvanimoghaddam M, Condoluci M, Dohler M, Johnson SJ, 'On the Fundamental Limits of Random Non-Orthogonal Multiple Access in Cellular Massive IoT', IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 35 2238-2252 (2017) [C1]
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2017 |
Asadi B, Ong L, Johnson SJ, 'Leveraging Receiver Message Side Information in Two-Receiver Broadcast Channels: A General Approach', ENTROPY, 19 (2017) [C1]
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2017 |
Johnson SJ, Lance AM, Ong L, Shirvanimoghaddam M, Ralph TC, Symul T, 'On the problem of non-zero word error rates for fixed-rate error correction codes in continuous variable quantum key distribution', NEW JOURNAL OF PHYSICS, 19 (2017) [C1]
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2017 |
Ong LK, Zhao Z, Kluge M, TeBay C, Zalewska K, Dickson PW, et al., 'Reconsidering the role of glial cells in chronic stress-induced dopaminergic neurons loss within the substantia nigra? Friend or foe?', Brain, Behavior, and Immunity, 60 117-125 (2017) [C1] © 2016 Elsevier Inc. Exposure to psychological stress is known to seriously disrupt the operation of the substantia nigra (SN) and may in fact initiate the loss of dopaminergic ne... [more] © 2016 Elsevier Inc. Exposure to psychological stress is known to seriously disrupt the operation of the substantia nigra (SN) and may in fact initiate the loss of dopaminergic neurons within the SN. In this study, we aimed to investigate how chronic stress modified the SN in adult male mice. Using a paradigm of repeated restraint stress (an average of 20¿h per week for 6¿weeks), we examined changes within the SN using western blotting and immunohistochemistry. We demonstrated that chronic stress was associated with a clear loss of dopaminergic neurons within the SN. The loss of dopaminergic neurons was accompanied by higher levels of oxidative stress damage, indexed by levels of protein carbonylation and strong suppression of both microglial and astrocytic responses. In addition, we demonstrated for the first time, that chronic stress alone enhanced the aggregation of a-synuclein into the insoluble protein fraction. These results indicate that chronic stress triggered loss of dopaminergic neurons by increasing oxidative stress, suppressing glial neuroprotective functions and enhancing the aggregation of the neurotoxic protein, a-synuclein. Collectively, these results reinforce the negative effects of chronic stress on the viability of dopaminergic cells within the SN.
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2017 |
Thapa C, Ong L, Johnson SJ, 'Interlinked Cycles for Index Coding: Generalizing Cycles and Cliques', IEEE TRANSACTIONS ON INFORMATION THEORY, 63 3692-3711 (2017) [C1]
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2017 |
Shirvanimoghaddam M, Dohler M, Johnson SJ, 'Massive Non-Orthogonal Multiple Access for Cellular IoT: Potentials and Limitations', IEEE COMMUNICATIONS MAGAZINE, 55 55-61 (2017) [C1]
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2017 |
Shirvanimoghaddam M, Dohler M, Johnson S, 'Massive Multiple Access Based on Superposition Raptor Codes for M2M Communications', IEEE Transactions on Wireless Communications, 16 (2017) [C1]
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2017 |
Zhao Z, Ong LK, Johnson S, Nilsson M, Walker FR, 'Chronic stress induced disruption of the peri-infarct neurovascular unit following experimentally induced photothrombotic stroke.', Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 37 3709-3724 (2017) [C1]
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2017 |
Jayasooriya S, Shirvanimoghaddam M, Ong L, Johnson SJ, 'Analysis and Design of Raptor Codes Using a Multi-Edge Framework', IEEE TRANSACTIONS ON COMMUNICATIONS, 65 5123-5136 (2017) [C1]
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2017 |
Turley JA, Zalewska K, Nilsson M, Walker FR, Johnson SJ, 'An analysis of signal processing algorithm performance for cortical intrinsic optical signal imaging and strategies for algorithm selection', SCIENTIFIC REPORTS, 7 (2017) [C1]
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2017 |
Zalewska K, Ong LK, Johnson SJ, Nilsson M, Walker FR, 'Oral administration of corticosterone at stress-like levels drives microglial but not vascular disturbances post-stroke', Neuroscience, 352 30-38 (2017) [C1] © 2017 IBRO Exposure to chronic stress following stroke has been shown, both clinically and pre-clinically, to impact negatively on the recovery process. While this phenomenon is ... [more] © 2017 IBRO Exposure to chronic stress following stroke has been shown, both clinically and pre-clinically, to impact negatively on the recovery process. While this phenomenon is well established, the specific mechanisms involved have remained largely unexplored. One obvious signaling pathway through which chronic stress may impact on the recovery process is via corticosterone, and its effects on microglial activity and vascular remodeling. In the current study, we were interested in examining how orally delivered corticosterone at a stress-like concentration impacted on microglial activity and vascular remodeling after stroke. We identified that corticosterone administration for two weeks following stroke significantly increased tissue loss and decreased the weight of the spleen and thymus. We also identified that corticosterone administration significantly altered the expression of the key microglial complement receptor, CD11b after stroke. Corticosterone administration did not alter the expression of the vessel basement membrane protein, Collagen IV after stroke. Together, these results suggest that corticosterone is likely to represent only one of the major stress signals responsible for driving the negative impacts of chronic stress on recovery.
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2017 |
Kluge MG, Kracht L, Abdolhoseini M, Ong LK, Johnson SJ, Nilsson M, Walker FR, 'Impaired microglia process dynamics post-stroke are specific to sites of secondary neurodegeneration', GLIA, 65 1885-1899 (2017) [C1] © 2017 Wiley Periodicals, Inc. Stroke induces tissue death both at the site of infarction and at secondary sites connected to the primary infarction. This latter process has been ... [more] © 2017 Wiley Periodicals, Inc. Stroke induces tissue death both at the site of infarction and at secondary sites connected to the primary infarction. This latter process has been referred to as secondary neurodegeneration (SND). Using predominantly fixed tissue analyses, microglia have been implicated in regulating the initial response at both damage sites post-stroke. In this study, we used acute slice based multiphoton imaging, to investigate microglia dynamic process movement in mice 14 days after a photothrombotic stroke. We evaluated the baseline motility and process responses to locally induced laser damage in both the peri-infarct (PI) territory and the ipsilateral thalamus, a major site of post-stroke SND. Our findings show that microglia process extension toward laser damage within the thalamus is lost, yet remains robustly intact within the PI territory. However, microglia at both sites displayed an activated morphology and elevated levels of commonly used activation markers (CD68, CD11b), indicating that the standardly used fixed tissue metrics of microglial ¿activity¿ are not necessarily predictive of microglia function. Analysis of the purinergic P2Y12 receptor, a key regulator of microglia process extension, revealed an increased somal localization on nonresponsive microglia in the thalamus. To our knowledge, this is the first study to identify a non-responsive microglia phenotype specific to areas of SND post-stroke, which cannot be identified by the classical assessment of microglia activation but rather the localization of P2Y12 to the soma.
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2016 |
Jayasooriya S, Shirvanimoghaddam M, Ong L, Lechner G, Johnson S, 'New Density Evolution Approximation for LDPC and Multi-Edge Type LDPC Codes', IEEE Transactions on Communications, 64 4044-4056 (2016) [C1]
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2016 |
Shirvanimoghaddam M, Johnson SJ, 'Multiple Access Technologies for Cellular M2M Communications', ZTE COMMUNICATIONS, 14 42-49 (2016) [C1]
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2015 |
Johnson SJ, Walker FR, 'Strategies to improve quantitative assessment of immunohistochemical and immunofluorescent labelling', SCIENTIFIC REPORTS, 5 (2015) [C1]
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2015 |
Kongsui R, Johnson SJ, Graham BA, Nilsson M, Walker FR, 'A combined cumulative threshold spectra and digital reconstruction analysis reveal structural alterations of microglia within the prefrontal cortex following low-dose LPS administration', Neuroscience, 310 629-640 (2015) [C1] © 2015 IBRO. Sickness behaviors have become the focus of great interest in recent years as they represent a clear case of how peripheral disturbances in immune signaling can disru... [more] © 2015 IBRO. Sickness behaviors have become the focus of great interest in recent years as they represent a clear case of how peripheral disturbances in immune signaling can disrupt quite complex behaviors. In the current study, we were interested in examining whether we could identify any significant morphological disturbances in microglia associated with these sickness-like behaviors in adult male Sprague-Dawley rats. We chose lipopolysaccharide (LPS 100 µg/kg/i.p.), to induce sickness-like behaviors as it is the most well-validated approach to do so in rodents and humans. We were particularly interested in examining changes in microglia within the prefrontal cortex (PFC) as several recent neuroimaging studies have highlighted significant functional changes in this region following peripheral LPS administration. Paraformaldehyde-fixed tissue was collected from animals 24 h post LPS administration and labeled immunohistochemically with an antibody directed to bind to Iba-1, a protein known to be involved in the structural remodeling of microglia. To analyze changes, we have made use of two recently described image analysis procedures. The first is known as cumulative threshold spectra (CTS) analysis. The second involves the unsupervised digital reconstruction of microglia. We undertook these complementary analysis of microglial cells in the both the pre- and infralimbic divisions of the PFC. Our results indicated that microglial soma size was significantly enlarged, while cell processes had contracted slightly following LPS administration. To our knowledge this study is to first to definitely demonstrate substantial microglial disturbances within the PFC following LPS delivered at a dose that was sufficient to induce significant sickness-like behavior.
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2015 |
Asadi B, Ong L, Johnson SJ, 'Optimal Coding Schemes for the Three-Receiver AWGN Broadcast Channel With Receiver Message Side Information', IEEE TRANSACTIONS ON INFORMATION THEORY, 61 5490-5503 (2015) [C1]
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2015 |
Patience MJ, Zouikr I, Jones K, Clarkson AN, Isgaard J, Johnson SJ, et al., 'Photothrombotic Stroke Induces Persistent Ipsilateral and Contralateral Astrogliosis in Key Cognitive Control Nuclei', NEUROCHEMICAL RESEARCH, 40 362-371 (2015) [C1]
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2015 |
Jones KA, Zouikr I, Patience M, Clarkson AN, Isgaard J, Johnson SJ, et al., 'Chronic stress exacerbates neuronal loss associated with secondary neurodegeneration and suppresses microglial-like cells following focal motor cortex ischemia in the mouse', Brain, Behavior, and Immunity, 48 57-67 (2015) [C1]
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2014 |
Kongsui R, Beynon SB, Johnson SJ, Mayhew J, Kuter P, Nilsson M, Walker FR, 'Chronic stress induces prolonged suppression of the P2X7 receptor within multiple regions of the hippocampus: A cumulative threshold spectra analysis', Brain, Behavior, and Immunity, 42 69-80 (2014) [C1]
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2014 |
Asadi B, Ong L, Johnson SJ, 'On Index Coding in Noisy Broadcast Channels with Receiver Message Side Information', IEEE COMMUNICATIONS LETTERS, 18 640-643 (2014) [C1]
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2014 |
Kongsui R, Beynon SB, Johnson SJ, Walker FR, 'Quantitative assessment of microglial morphology and density reveals remarkable consistency in the distribution and morphology of cells within the healthy prefrontal cortex of the rat', JOURNAL OF NEUROINFLAMMATION, 11 (2014) [C1]
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2014 |
Chandrasetty VA, Johnson SJ, Lechner G, 'Memory-efficient quasi-cyclic spatially coupled low-density parity-check and repeat-accumulate codes', IET Communications, 8 3179-3188 (2014) [C1]
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2014 |
Ong L, Johnson SJ, Kellett CM, 'On the capacity of the binary-symmetric parallel-relay network', TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES, 25 217-230 (2014) [C1]
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2013 |
Tynan RJ, Beynon SB, Hinwood M, Johnson SJ, Nilsson M, Woods JJ, Walker FR, 'Chronic stress-induced disruption of the astrocyte network is driven by structural atrophy and not loss of astrocytes', Acta Neuropathologica, 126 75-91 (2013) [C1]
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2013 |
Timo R, Lechner G, Ong L, Johnson S, 'Multi-Way Relay Networks: Orthogonal Uplink, Source-Channel Separation and Code Design', IEEE TRANSACTIONS ON COMMUNICATIONS, 61 753-768 (2013) [C1]
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2013 |
Ong L, Lechner G, Johnson SJ, Kellett CM, 'The Three-User Finite-Field Multi-Way Relay Channel with Correlated Sources', IEEE TRANSACTIONS ON COMMUNICATIONS, 61 3125-3135 (2013) [C1]
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2013 |
Johnson S, Lechner G, 'Spatially Coupled Repeat-Accumulate Codes', IEEE COMMUNICATIONS LETTERS, 17 373-376 (2013) [C1]
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2012 |
Ong LL, Kellett CM, Johnson SJ, 'On the equal-rate capacity of the AWGN multiway relay channel', IEEE Transactions on Information Theory, 58 5761-5769 (2012) [C1]
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2012 |
Ong LL, Motani M, Johnson SJ, 'On capacity and optimal scheduling for the half-duplex multiple-relay channel', IEEE Transactions on Information Theory, 58 5770-5784 (2012) [C1]
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2012 |
Ong LL, Johnson SJ, Kellett CM, 'The half-duplex AWGN single-relay channel: Full decoding or partial decoding?', IEEE Transactions on Communications, 60 3156-3160 (2012) [C1]
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2012 |
Ong LL, Johnson SJ, 'The capacity region of the restricted two-way relay channel with any deterministic uplink', IEEE Communications Letters, 16 396-399 (2012) [C1]
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2011 |
Ong LL, Johnson SJ, Kellett CM, 'The capacity region of multiway relay channels over finite fields with full data exchange', IEEE Transactions on Information Theory, 57 3016-3031 (2011) [C1]
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2011 |
Johnson SJ, Ong LL, Kellett CM, 'Joint channel-network coding strategies for networks with low-complexity relays', European Transactions on Telecommunications, 22 396-406 (2011) [C1]
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2010 |
Ong LL, Johnson SJ, Kellett CM, 'An optimal coding strategy for the binary multi-way relay channel', IEEE Communications Letters, 14 330-332 (2010) [C1]
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2009 |
Johnson SJ, 'A finite-length algorithm for LDPC codes without repeated edges on the binary erasure channel', IEEE Transactions on Information Theory, 55 27-32 (2009) [C1]
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2009 |
Johnson SJ, 'Burst erasure correcting LDPC codes', IEEE Transactions on Communications, 57 641-652 (2009) [C1]
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2009 |
Johnson SJ, Weller SR, 'Practical interleavers for repeat-accumulate codes', IEEE Transactions on Communications, 57 1225-1228 (2009) [C1]
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2008 |
Johnson SJ, Weller SR, 'Combinatorial interleavers for systematic regular repeat-accumulate codes', IEEE Transactions on Communications, 56 1201-1206 (2008) [C1]
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2006 |
Johnson SJ, Weller SR, 'Constraining LDPC degree distributions for improved error floor performance', IEEE Communications Letters, 10 103-105 (2006) [C1]
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2004 |
Johnson SJ, Weller SR, 'Codes for iterative decoding from partial geometies', IEEE Transactions on Communications, 52 236-243 (2004) [C1]
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2003 |
Johnson SJ, Weller SR, 'Resolvable 2-Designs for Regular Low-Density Parity-Check Codes', IEEE Transactions on Communications, 51 1413-1419 (2003) [C1]
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2003 |
Johnson SJ, Weller SR, 'A Family if Irregular LDPC Codes with low Encoding Complexity', IEEE Communication Letters, 7 79-81 (2003) [C1]
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2003 |
Weller SR, Johnson SJ, 'Regular low-density parity-check codes from oval designs', European Transactions on Teleconmmunications, 14 399-409 (2003) [C1]
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Show 68 more journal articles |
Conference (51 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2019 |
See ZS, Rey U, Neilson F, Cuneo M, Barnes-Keoghan A, O'Donnell L, et al., 'Sodeisha Sculptural Ceramics: Digitalization and VR Interaction', The 17th International Conference on Virtual-Reality Continuum and its Applications in Industry on - VRCAI '19, Australia (2019) [E1]
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2019 |
Abdolhoseini M, Klugen MG, Walker FR, Johnson SJ, 'Neuron image synthesizer via gaussian mixture model and perlin noise', 2019 IEEE 16th International Symposium On Biomedical Imaging (ISBI 2019), Venice, ITALY (2019) [E1]
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2018 |
Matuz B, Clazzer F, Johnson SJ, Jayasooriya S, Shirvanimoghaddam M, 'LDPC Code Design for Asynchronous Random Access', PROCEEDINGS OF 2018 IEEE 10TH INTERNATIONAL SYMPOSIUM ON TURBO CODES & ITERATIVE INFORMATION PROCESSING (ISTC), HONG KONG, PEOPLES R CHINA (2018) [E1]
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2018 |
Asadi B, Ong L, Johnson SJ, 'Centralized caching with unequal cache sizes', 2018 IEEE Information Theory Workshop, ITW 2018, Guangzhou, China (2018) [E1]
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2018 |
Afkhami RG, Low K, Walker F, Johnson S, 'A Dynamic Model of Synthetic Resting-State Brain Hemodynamics', 2018 26TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO), Rome, ITALY (2018) [E1]
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2017 |
Li M, Ong L, Johnson SJ, 'Improved Bounds for Multi-Sender Index Coding', 2017 IEEE International Symposium on Information Theory, Aachen, Germany (2017) [E1]
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2016 |
Asadi B, Ong L, Johnson SJ, 'A Unified Inner Bound for the Two-Receiver Memoryless Broadcast Channel with Channel State and Message Side Information', 2016 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY, Barcelona, SPAIN (2016) [E1]
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2016 |
Johnson SJ, Chandrasetty VA, Lance AM, 'Repeat-accumulate codes for reconciliation in continuous variable quantum key distribution', 2016 Australian Communications Theory Workshop, AusCTW 2016 (2016) [E1] © 2016 IEEE. This paper investigates the design of low-complexity error correction codes for the verification step in continuous variable quantum key distribution (CVQKD) systems.... [more] © 2016 IEEE. This paper investigates the design of low-complexity error correction codes for the verification step in continuous variable quantum key distribution (CVQKD) systems. We design new coding schemes based on quasi-cyclic repeat-accumulate codes which demonstrate good performances for CVQKD reconciliation. Given quasi-cyclic repeat-accumulate codes' commercial maturity, low implementation complexity and existing high-speed ASIC implementations, this makes these codes viable candidates for commercial CVQKD systems.
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2016 |
Shirvanimoghaddam M, Johnson SJ, Lance AM, 'Design of Raptor Codes in the Low SNR Regime with Applications in Quantum Key Distribution', IEEE ICC 2016 - Communications Theory, Kuala Lumpur (2016) [E1]
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2016 |
Shirvanimoghaddam M, Johnson S, 'Approaching the Capacity of AWGN Channels using Multi-Layer Raptor Codes and Superposition Modulation', 2016 IEEE International Symposium on Information Theory (ISIT), Barcelona, Spain (2016) [E1]
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2016 |
Thapa C, Ong L, Johnson SJ, 'Graph-theoretic approaches to two-sender index coding', 2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings, Washington, DC (2016) [E1]
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2016 |
Abdolhoseini M, Walker F, Johnson SJ, 'Automated Tracing of Microglia Using Multilevel Thresholding and Minimum Spanning Trees', 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Florida, USA (2016) [E1]
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2015 |
Thapa C, Ong L, Johnson SJ, 'Generalized interlinked cycle cover for index coding', ITW 2015 - 2015 IEEE Information Theory Workshop (2015) [E1] © 2015 IEEE. A source coding problem over a noiseless broadcast channel where the source is preinformed about the contents of the cache of all receivers, is an index coding proble... [more] © 2015 IEEE. A source coding problem over a noiseless broadcast channel where the source is preinformed about the contents of the cache of all receivers, is an index coding problem. Furthermore, if each message is requested by one receiver, then we call this an index coding problem with a unicast message setting. This problem can be represented by a directed graph. In this paper, we first define a structure (we call generalized interlinked cycle (GIC)) in directed graphs. A GIC consists of cycles which are interlinked in some manner (i.e., not disjoint), and it turns out that the GIC is a generalization of cliques and cycles. We then propose a simple scalar linear encoding scheme with linear time encoding complexity. This scheme exploits GICs in the digraph. We prove that our scheme is optimal for a class of digraphs with message packets of any length. Moreover, we show that our scheme can outperform existing techniques, e.g., partial clique cover, local chromatic number, composite-coding, and interlinked cycle cover.
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2015 |
Walker FR, Zouikr I, Patience M, Clarkson A, Isgaard J, Johnson S, et al., 'Chronic stress exacerbates neuronal loss associated with secondary neurodegeneration and suppresses microglial-like cells following focal motor cortex ischemia in the mouse', GLIA, Bilbao, SPAIN (2015) [E3]
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2015 |
Turley JA, Nilsson M, Walker FR, Johnson SJ, 'A comparison of signal processing techniques for Intrinsic Optical Signal imaging in mice', Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (2015) [E1] © 2015 IEEE. Intrinsic Optical Signal imaging is a technique which allows the visualisation and mapping of activity related changes within the brain with excellent spatial and tem... [more] © 2015 IEEE. Intrinsic Optical Signal imaging is a technique which allows the visualisation and mapping of activity related changes within the brain with excellent spatial and temporal resolution. We analysed a variety of signal and image processing techniques applied to real mouse imaging data. The results were compared in an attempt to overcome the unique issues faced when performing the technique on mice and improve the understanding of post processing options available.
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2015 |
Thapa C, Ong L, Johnson SJ, 'A new index coding scheme exploiting interlinked cycles', IEEE International Symposium on Information Theory - Proceedings (2015) [E1] © 2015 IEEE. We study the index coding problem in the unicast message setting, i.e., where each message is requested by one unique receiver. This problem can be modeled by a direc... [more] © 2015 IEEE. We study the index coding problem in the unicast message setting, i.e., where each message is requested by one unique receiver. This problem can be modeled by a directed graph. We propose a new scheme called interlinked cycle cover, which exploits interlinked cycles in the directed graph, for designing index codes. This new scheme generalizes the existing clique cover and cycle cover schemes. We prove that for a class of infinitely many digraphs with messages of any length, interlinked cycle cover provides an optimal index code. Furthermore, the index code is linear with linear time encoding complexity.
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2015 |
Asadi B, Ong L, Johnson SJ, 'A unified scheme for two-receiver broadcast channels with receiver message side information', IEEE International Symposium on Information Theory - Proceedings (2015) [E1] © 2015 IEEE. This paper investigates the capacity regions of two-receiver broadcast channels where each receiver (i) has both common and private-message requests, and (ii) knows p... [more] © 2015 IEEE. This paper investigates the capacity regions of two-receiver broadcast channels where each receiver (i) has both common and private-message requests, and (ii) knows part of the private message requested by the other receiver as side information. We first propose a transmission scheme and derive an inner bound for the two-receiver memoryless broadcast channel. We next prove that this inner bound is tight for the deterministic channel and the more capable channel, thereby establishing their capacity regions.We show that this inner bound is also tight for all classes of two-receiver broadcast channels whose capacity regions were known prior to this work. Our proposed scheme is consequently a unified capacity-achieving scheme for these classes of broadcast channels.
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2014 |
Ong L, Johnson SJ, Kellett CM, 'Optimal coding functions for pairwise message sharing on finite-field multi-way relay channels', 2014 IEEE International Conference on Communications, ICC 2014 (2014) [E1] This paper considers the finite-field multi-way relay channel with pairwise message sharing, where multiple users exchange messages through a single relay and where the users may ... [more] This paper considers the finite-field multi-way relay channel with pairwise message sharing, where multiple users exchange messages through a single relay and where the users may share parts of their source messages (meaning that some message parts are known/common to more than one user). In this paper, we design an optimal functional-decode-forward coding scheme that takes the shared messages into account. More specifically, we design an optimal function for the relay to decode (from the users on the uplink) and forward (back to the users on the downlink). We then show that this proposed function-decode-forward coding scheme can achieve the capacity region of the finite-field multi-way relay channel with pairwise message sharing. This paper generalizes our previous result for the case of three users to any number of users. © 2014 IEEE.
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2014 |
Asadi B, Ong L, Johnson SJ, 'The capacity of three-receiver AWGN broadcast channels with receiver message side information', IEEE International Symposium on Information Theory - Proceedings (2014) [E1] This paper investigates the capacity region of three-receiver AWGN broadcast channels where the receivers (i) have private-message requests and (ii) know the messages requested by... [more] This paper investigates the capacity region of three-receiver AWGN broadcast channels where the receivers (i) have private-message requests and (ii) know the messages requested by some other receivers as side information. We classify these channels based on their side information into eight groups, and construct different transmission schemes for the groups. For six groups, we characterize the capacity region, and show that it improves both the best known inner and outer bounds. For the remaining two groups, we improve the best known inner bound by using side information during channel decoding at the receivers. © 2014 IEEE.
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2014 |
Ong L, Asadi B, Johnson SJ, 'Coding schemes for a class of receiver message side information in AWGN broadcast channels', IEEE Information Theory Workshop (ITW), Hobart, Australia (2014) [E1]
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2014 |
Jayasooriya S, Johnson SJ, Ong L, Berretta R, 'Optimization of graph based codes for belief propagation decoding', Information Theory Workshop (ITW), 2014 IEEE, Hobart, Tas (2014) [E1]
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2014 | Ye T, Veitch D, Johnson SJ, 'RA-inspired codes for efficient information theoretic multi-path network security', 2014 International Symposium on Information Theory and its Applications (ISITA), Melbourne (2014) [E1] | ||||||||||
2012 | Lechner G, Johnson SJ, 'Absorbing sets and cycles', 2012 7th International Symposium on Turbo Codes and Iterative Information Processing, ISTC 2012, Gothenburg, Sweden (2012) [E1] | ||||||||||
2012 |
Ong LL, Timo R, Johnson SJ, 'The finite field multi-way relay channel with correlated sources: Beyond three users', 2012 IEEE International Symposium on Information Theory Proceedings (ISIT), Cambridge, Massachusetts (2012) [E1]
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2012 |
Ong LL, Johnson SJ, 'The capacity region of restricted multi-way relay channels with deterministic uplinks', 2012 IEEE International Symposium on Information Theory Proceedings (ISIT), Boston, Massachusetts (2012) [E1]
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2011 |
Ong LL, Kellett CM, Johnson SJ, 'On achievable rate regions of the asymmetric AWGN two-way relay channel', 2011 IEEE International Symposium on Information Theory Proceedings (ISIT), St. Petersburg, Russia (2011) [E1]
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2011 |
Ong LL, Timo R, Lechner G, Johnson SJ, Kellett CM, 'The finite field multi-way relay channel with correlated sources: The three-user case', 2011 IEEE International Symposium on Information Theory Proceedings (ISIT), St. Petersburg, Russia (2011) [E1]
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2010 |
Ong LL, Johnson SJ, Kellett CM, 'The binary-symmetric parallel-relay network', Proceedings of the 2010 IEEE International Symposium on Information Theory (ISIT 2010), Austin, TX (2010) [E1]
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2010 |
Ong LL, Kellett CM, Johnson SJ, 'Capacity theorems for the AWGN multi-way relay channel', Proceedings of the 2010 IEEE International Symposium on Information Theory (ISIT 2010), Austin, TX (2010) [E1]
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2010 |
Ong LL, Johnson SJ, Kellett CM, 'The capacity of a class of multi-way relay channels', Proceedings of the 12th IEEE International Conference on Communications Systems (ICCS 2010), Singapore (2010) [E1]
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2010 |
Ong LL, Johnson SJ, Kellett CM, 'Functional-decode-forward for the general discrete memoryless two-way relay channel', Proceedings of the 12th IEEE International Conference on Communications Systems (ICCS 2010), Singapore (2010) [E1]
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2009 |
Ong LL, Johnson SJ, Motani M, 'Optimal schedules for the D-node half duplex phase fading MRC', 2009 IEEE International Symposium on Information Theory (ISIT 2009), Seoul, Korea (2009) [E1]
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2009 |
Ong LL, Johnson SJ, Kellett CM, 'Achievable rate regions of the butterfly network with noisy links and end-to-end error correction', 2009 IEEE Information Theory Workshop (ITW 2009), Taormina, Sicily (2009) [E1]
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2007 |
Johnson SJ, 'LDPC codes for correcting multiple erasure bursts', 8th Australian Communication Theory Workshop, AusCTW 2007 (2007) In this paper low-density parity-check (LDPC) codes are considered for burst erasure channels. Multiple burst erasure correcting LDPC codes are constructed using superposition and... [more] In this paper low-density parity-check (LDPC) codes are considered for burst erasure channels. Multiple burst erasure correcting LDPC codes are constructed using superposition and the burst erasure correcting performances of the resulting codes are derived as a property of the stopping set size of the base matrices and the choice of permutation matrices for the superposition. |
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2007 |
Johnson SJ, Kellett CM, 'Joint Network and Channel Coding for Cooperative Networks', 2007 AUSTRALASIANTELECOMMUNICATION NETWORKS AND APPLICATIONS CONFERENCE, Christchurch, NEW ZEALAND (2007)
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2006 |
Johnson SJ, Weller SR, 'Practical Interleavers for Systematic Repeat-Accumulate Codes', 2006 IEEE 63rd Vehicular Technology Conference, Melbourne, VIC, Australia (2006) [E1]
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2006 | Johnson SJ, 'Erasure Correcting LDPC Codes For Channels With Packet Losses', Proceedings of the NEWCOM-ACORN Joint Workshop, Vienna, September 2006, Vienna, Austria (2006) [E1] | ||||||||||
2005 |
Johnson SJ, Weller SR, 'Interleaver and Accumulator Design For Systematic Repeat-Accumulate Codes', Proceedings 6th Australian Communications Theory Workshop 2005 : 2-4 February 2005, The University of Queensland, Brisbane, Australia, Brisbane, Australia (2005) [E1]
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2005 |
Johnson SJ, 'Finite-Length Repeat-Accumulate Codes on The Binary Erasure Channel', 2005 Asia-Pacific Conference on Communications, Perth, Western Australia, 3-5 October 2005, Perth, Australia (2005) [E1]
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2005 |
Johnson SJ, Weller SR, 'Constructions for Irregular Repeat-Accumulate Codes', Proceedings of 2005 IEEE International Symposium on Information Theory, Adelaide, S. Aust (2005) [E1]
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2004 |
Sadeghi P, Rapajic PB, Johnson SJ, 'Numerical capacity analysis of time varying fading channels using finite state Markov models', IEEE International Symposium on Information Theory - Proceedings (2004) We investigate the effect of channel gain quantization on the information capacity of unknown time varying flat fading channels. The phase and/or amplitude of the flat fading chan... [more] We investigate the effect of channel gain quantization on the information capacity of unknown time varying flat fading channels. The phase and/or amplitude of the flat fading channel gain is modelled as a finite state Markov (FSM) process and the information capacity of the FSM channel is calculated numerically as a measure for choosing the number of channel quantization levels, as well as quantization thresholds. The results indicate that for binary signalling, the capacity is saturated beyond 8 to 16 levels of phase and 8 to 16 levels of amplitude quantization. |
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2004 |
Johnson SJ, Weller SR, 'Structured low-density parity-check codes over non-binary fields', Proceedings of the 5th Australian Communication Theory Workshop 2004, Brisbane (2004) [E1]
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2003 |
Johnson SJ, Weller SR, 'High-Rate LDPC Codes from Unital Designs', Proceedings for GLOBECOM 2003, San Francisco, USA (2003) [E1]
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2003 |
Johnson SJ, Weller SR, 'Can Cyclic Codes be Useful Low-Density Parity-Check Codes', Proceedings for AUSCTW 2003, Melbourne (2003) [E1]
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2003 |
Brown RA, Johnson SJ, Weller SR, 'Performance of Space-Time Block Codes with Finite Geometry LDPC Outer Codes', Proceedings for AUSCTW 2003, University of Melbourne (2003) [E1]
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2002 |
Johnson SJ, Weller SR, 'Codes for Iterative Decoding from Partial Geometries', International Symposium on Information Theory 2002, Switzerland (2002) [E1]
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2002 |
Johnson SJ, Weller SR, 'Quasi-cyclic LDPC Codes from Difference Families', Proceedings 3rd Australian Communications Theory Workshop 2002, Canberra, Australia (2002) [E1]
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2001 |
Johnson SJ, Weller SR, 'Construction of Low-density Parity-check Codes from Kirkman Triple Systems', IEEE Global Telecommunications Conference, San Antonio, Texas, USA (2001) [E1]
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2001 |
Johnson SJ, Weller SR, 'Regular low-density parity-check codes from combinatorial designs', Proceedings 2001 IEEE Information Theory Workshop, Cairns, Australia (2001)
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Show 48 more conferences |
Grants and Funding
Summary
Number of grants | 46 |
---|---|
Total funding | $8,760,392 |
Click on a grant title below to expand the full details for that specific grant.
Highlighted grants and funding
Novel Techniques for Uncoordinated Massive Access in the Internet of Things$400,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Associate Professor Kaushik Mahata, Associate Professor Stephan Chalup |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2021 |
Funding Finish | 2023 |
GNo | G2000037 |
Type Of Funding | C1200 - Aust Competitive - ARC |
Category | 1200 |
UON | Y |
Information-theoretic secure communications via caching$442,452
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Associate Professor Lawrence Ong, Professor Sarah Johnson, Professor Joerg Kliewer, Dr Phee Lep Yeoh, Ms Emelie Ekenstedt |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2021 |
GNo | G1701596 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Communications strategies for the internet of things$454,461
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Dr Mahyar Shirvanimoghaddam, Professor Mischa Dohler, Gianluigi Liva |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2020 |
GNo | G1601547 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
New strategies to transmit data: Coping with exponential growth in demand$348,773
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Associate Professor Lawrence Ong, Dr Gottfried Lechner, Lechner, Gottfried |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2017 |
GNo | G1400187 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
New error correction strategies for continuous variable quantum key distribution$322,558
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Dr Andrew Lance, Lance, Andrew, Symul, Thomas |
Scheme | Linkage Projects |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2016 |
GNo | G1201139 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Compression of Digital Data: Bridging The Gap Between Theory and Practice$320,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | A Prof Ingmar Land, Prof Sarah Johnson |
Scheme | Discovery Project |
Role | Investigator |
Funding Start | 2012 |
Funding Finish | 2014 |
GNo | |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | N |
New high-performance iterative error correction codes$600,422
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Future Fellowships |
Role | Lead |
Funding Start | 2011 |
Funding Finish | 2018 |
GNo | G1100437 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Optimising Cooperation in Multiterminal Wireless Networks$150,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2010 |
Funding Finish | 2012 |
GNo | G0189995 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Iterative coding for next generation networks$335,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Professor Christopher Kellett |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2008 |
Funding Finish | 2010 |
GNo | G0187513 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Construction methods and analysis tools for repeat-accumulate error correction codes$112,128
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2008 |
GNo | G0185285 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Structured low-density parity-check codes for next-generation digital communications$257,466
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Steven Weller, Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2004 |
Funding Finish | 2006 |
GNo | G0183017 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20211 grants / $400,000
Novel Techniques for Uncoordinated Massive Access in the Internet of Things$400,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Associate Professor Kaushik Mahata, Associate Professor Stephan Chalup |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2021 |
Funding Finish | 2023 |
GNo | G2000037 |
Type Of Funding | C1200 - Aust Competitive - ARC |
Category | 1200 |
UON | Y |
20205 grants / $635,298
MRSP Brain and Mental Health 2020$515,846
Funding body: Hunter Medical Research Institute
Funding body | Hunter Medical Research Institute |
---|---|
Project Team | Professor Neil Spratt, Conjoint Professor Chris Levi, Professor Michael Nilsson, Professor Rohan Walker, Professor Sarah Johnson, Associate Professor Andrew Gardner, Professor Coralie English, Professor Frini Karayanidis, Aprof JANE Maguire, Professor Mark Parsons, Professor Billie Bonevski |
Scheme | NSW MRSP Infrastructure Grant |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2021 |
GNo | G1901477 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Understanding awareness, barriers and enablers that affect rehabilitation decisions to support equitable access to rehabilitative care$52,180
Funding body: Medibank Private Ltd
Funding body | Medibank Private Ltd |
---|---|
Project Team | Professor Michael Nilsson, Professor Rohan Walker, Doctor Nicolette Hodyl, Professor Sarah Johnson, Ms Gillian Mason, Associate Professor Michael Pollack |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2020 |
GNo | G2000306 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWISE: Hunter Women in STEM and Entrepreneurship - Alumni$40,000
Funding body: Glencore Coal Assets Australia Pty Ltd
Funding body | Glencore Coal Assets Australia Pty Ltd |
---|---|
Project Team | Professor Anna Giacomini, Associate Professor Elena Prieto-Rodriguez, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Community Investment Program (CI) Program |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2020 |
GNo | G2000784 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$13,636
Funding body: BHP Billiton Limited
Funding body | BHP Billiton Limited |
---|---|
Project Team | Professor Regina Berretta, Associate Professor Karen Blackmore, Professor Anna Giacomini, Professor Sarah Johnson, Associate Professor Elena Prieto-Rodriguez, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Project |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2021 |
GNo | G1901241 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$13,636
Funding body: Bradken Resources Pty Limtited
Funding body | Bradken Resources Pty Limtited |
---|---|
Project Team | Associate Professor Karen Blackmore, Professor Anna Giacomini, Associate Professor Elena Prieto-Rodriguez, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd, Professor Regina Berretta, Professor Anna Giacomini, Professor Sarah Johnson, Associate Professor Elena Prieto-Rodriguez, Professor Juanita Todd, Professor Erica Wanless |
Scheme | HunterWiSE Silver Sponsorship |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2020 |
GNo | G2000224 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
20198 grants / $1,397,239
HMRI MRSP Infrastructure Funding Brain and Mental Health Program 2019$815,242
Funding body: NSW Ministry of Health
Funding body | NSW Ministry of Health |
---|---|
Project Team | Professor Neil Spratt, Professor Alan Brichta, Professor Alan Brichta, Conjoint Professor Chris Levi, Professor Michael Nilsson, Professor Rohan Walker, Professor Sarah Johnson, Doctor Andrew Bivard, Associate Professor Andrew Gardner, Professor Coralie English, Professor Frini Karayanidis, Professor Mark Parsons, Professor Billie Bonevski, Professor Scott Brown, Professor Sally Chan, Associate Professor Brett Graham, Professor Frances Kay-Lambkin, Professor Brian Kelly, Associate Professor Doug Smith, Professor Neil Spratt, Professor Juanita Todd |
Scheme | Medical Research Support Program (MRSP) |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1801392 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Information-theoretic secure communications via caching$442,452
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Associate Professor Lawrence Ong, Professor Sarah Johnson, Professor Joerg Kliewer, Dr Phee Lep Yeoh, Ms Emelie Ekenstedt |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2021 |
GNo | G1701596 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$60,000
Funding body: Newcastle Coal Infrastructure Group (NCIG)
Funding body | Newcastle Coal Infrastructure Group (NCIG) |
---|---|
Project Team | Associate Professor Elena Prieto-Rodriguez, Professor Anna Giacomini, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2020 |
GNo | G1900128 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$45,000
Funding body: NSW Roads and Maritime Services
Funding body | NSW Roads and Maritime Services |
---|---|
Project Team | Professor Anna Giacomini, Associate Professor Elena Prieto-Rodriguez, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2021 |
GNo | G1801366 |
Type Of Funding | C2210 - Aust StateTerritoryLocal - Own Purpose |
Category | 2210 |
UON | Y |
HunterWISE: Hunter Women in STEM and Entrepreneurship$15,000
Funding body: GHD
Funding body | GHD |
---|---|
Project Team | Associate Professor Karen Blackmore, Professor Anna Giacomini, Associate Professor Elena Prieto-Rodriguez, Professor Sarah Johnson, Professor Regina Berretta, Professor Juanita Todd, Professor Erica Wanless |
Scheme | Project Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1801294 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$9,545
Funding body: Quarry Mining & Construction Equipment Pty Ltd
Funding body | Quarry Mining & Construction Equipment Pty Ltd |
---|---|
Project Team | Associate Professor Karen Blackmore, Associate Professor Elena Prieto-Rodriguez, Professor Anna Giacomini, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2020 |
GNo | G1801368 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$5,000
Funding body: Port of Newcastle
Funding body | Port of Newcastle |
---|---|
Project Team | Associate Professor Elena Prieto-Rodriguez, Professor Anna Giacomini, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd, Professor Regina Berretta, Associate Professor Karen Blackmore, Professor Anna Giacomini, Professor Sarah Johnson, Professor Juanita Todd, Professor Erica Wanless |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1900247 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
HunterWise: Hunter Women in STEM and Entrepreneurship$5,000
Funding body: Impervium Solutions
Funding body | Impervium Solutions |
---|---|
Project Team | Professor Regina Berretta, Professor Anna Giacomini, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Erica Wanless, Professor Juanita Todd, Associate Professor Elena Prieto-Rodriguez |
Scheme | Donation |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1901081 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
20184 grants / $2,489,480
Development and implementation of an advanced clinical decision-making support tool for the delivery of efficient, personalised rehabilitation for patients undergoing total knee arthroplasty (TKA).$1,473,200
Funding body: Ramsay Hospital Research Foundation Ltd
Funding body | Ramsay Hospital Research Foundation Ltd |
---|---|
Project Team | Professor Michael Nilsson, Professor Rohan Walker, Professor Sarah Johnson, Associate Professor Adrian Wills, Doctor Nattai Borges, Associate Professor Michael Pollack |
Scheme | Research Project |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2021 |
GNo | G1801043 |
Type Of Funding | C3112 - Aust Not for profit |
Category | 3112 |
UON | Y |
HMRI MRSP Infrastructure Funding Brain and Mental Health Program 2018$481,819
Funding body: NSW Ministry of Health
Funding body | NSW Ministry of Health |
---|---|
Project Team | Professor Neil Spratt, Conjoint Professor Chris Levi, Professor Michael Nilsson, Professor Rohan Walker, Professor Sarah Johnson, Doctor Andrew Bivard, Associate Professor Andrew Gardner, Professor Coralie English, Professor Frini Karayanidis, Aprof JANE Maguire, Professor Mark Parsons, Professor Billie Bonevski |
Scheme | Medical Research Support Program (MRSP) |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800544 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Communications strategies for the internet of things$454,461
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Dr Mahyar Shirvanimoghaddam, Professor Mischa Dohler, Gianluigi Liva |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2020 |
GNo | G1601547 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$80,000
Funding body: Glencore Coal Assets Australia Pty Ltd
Funding body | Glencore Coal Assets Australia Pty Ltd |
---|---|
Project Team | Professor Anna Giacomini, Associate Professor Elena Prieto-Rodriguez, Professor Regina Berretta, Associate Professor Karen Blackmore, Professor Sarah Johnson, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2020 |
GNo | G1801175 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
20176 grants / $163,419
HunterWiSE: Hunter Women in STEM and Entrepreneurship$83,636
Funding body: Muswellbrook Shire Council
Funding body | Muswellbrook Shire Council |
---|---|
Project Team | Associate Professor Elena Prieto-Rodriguez, Associate Professor Karen Blackmore, Professor Anna Giacomini, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2020 |
GNo | G1700965 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$35,000
Funding body: Hunter Water Corporation
Funding body | Hunter Water Corporation |
---|---|
Project Team | Associate Professor Karen Blackmore, Professor Anna Giacomini, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd, Associate Professor Elena Prieto-Rodriguez |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2018 |
GNo | G1700961 |
Type Of Funding | C3120 - Aust Philanthropy |
Category | 3120 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$15,000
Funding body: Glencore Coal Assets Australia Pty Ltd
Funding body | Glencore Coal Assets Australia Pty Ltd |
---|---|
Project Team | Professor Anna Giacomini, Associate Professor Karen Blackmore, Associate Professor Elena Prieto-Rodriguez, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700962 |
Type Of Funding | C3120 - Aust Philanthropy |
Category | 3120 |
UON | Y |
HunterWiSE: Hunter Women in STEM and Entrepreneurship$14,411
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Associate Professor Elena Prieto-Rodriguez, Associate Professor Karen Blackmore, Professor Anna Giacomini, Professor Sarah Johnson, Professor Regina Berretta, Professor Erica Wanless, Professor Juanita Todd |
Scheme | Special Project Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700963 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Development of Automated Multidimensional Biometric Assessment Platform for Virtual Reality and Simulation Based Training$10,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Rohan Walker, Associate Professor Eugene Nalivaiko, Professor Sarah Johnson |
Scheme | Linkage Pilot Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1701118 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Ultra-Low latency communication Strategies for Machine-to-Machine Communications$5,372
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson, Dr Mahyar Shirvanimoghaddam |
Scheme | Australia-Germany Joint Research Cooperation Scheme |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1600925 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20162 grants / $355,297
HMRI MRSP Infrastructure (12-16) Brain and Mental Health Program – Stroke and Brain Injury$325,297
Funding body: NSW Ministry of Health
Funding body | NSW Ministry of Health |
---|---|
Project Team | Professor Neil Spratt, Professor Mark Parsons, Professor Rohan Walker, Professor Coralie English, Professor Michael Nilsson, Conjoint Professor Chris Levi, Doctor Andrew Bivard, Aprof JANE Maguire, Conjoint Professor Parker Magin, Professor Sarah Johnson, Professor John Attia |
Scheme | Medical Research Support Program (MRSP) |
Role | Investigator |
Funding Start | 2016 |
Funding Finish | 2016 |
GNo | G1600733 |
Type Of Funding | C2220 - Aust StateTerritoryLocal - Other |
Category | 2220 |
UON | Y |
Imagent system$30,000
Funding body: NHMRC (National Health & Medical Research Council)
Funding body | NHMRC (National Health & Medical Research Council) |
---|---|
Project Team | Professor Juanita Todd, Professor Rohan Walker, Professor Frini Karayanidis, Professor Sarah Johnson |
Scheme | Equipment Grant |
Role | Investigator |
Funding Start | 2016 |
Funding Finish | 2016 |
GNo | G1601309 |
Type Of Funding | C2120 - Aust Commonwealth - Other |
Category | 2120 |
UON | Y |
20152 grants / $368,773
New strategies to transmit data: Coping with exponential growth in demand$348,773
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Associate Professor Lawrence Ong, Dr Gottfried Lechner, Lechner, Gottfried |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2015 |
Funding Finish | 2017 |
GNo | G1400187 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Blocking the negative effects of stress on the brain to promote better healing of the brain after stroke$20,000
Funding body: Hunter Medical Research Institute
Funding body | Hunter Medical Research Institute |
---|---|
Project Team | Professor Rohan Walker, Doctor Lin Kooi Ong, Doctor Ming Yang, Professor Sarah Johnson |
Scheme | Project Grant |
Role | Investigator |
Funding Start | 2015 |
Funding Finish | 2015 |
GNo | G1501384 |
Type Of Funding | Grant - Aust Non Government |
Category | 3AFG |
UON | Y |
20141 grants / $20,000
Improving error correction performance through spatial coupling $20,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Near Miss Grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1301383 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20135 grants / $446,558
New error correction strategies for continuous variable quantum key distribution$322,558
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Dr Andrew Lance, Lance, Andrew, Symul, Thomas |
Scheme | Linkage Projects |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2016 |
GNo | G1201139 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Improving error correction performance through spatial coupling$50,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Near Miss Grant |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | G1300453 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
New error correction strategies for continuous variable quantum key distribution$42,000
Funding body: Quintessence Labs Pty. Ltd.
Funding body | Quintessence Labs Pty. Ltd. |
---|---|
Project Team | Professor Sarah Johnson, Dr Thomas Symul, Dr Andrew Lance, Lance, Andrew, Symul, Thomas |
Scheme | Linkage Projects Partner Funding |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2016 |
GNo | G1201271 |
Type Of Funding | C3111 - Aust For profit |
Category | 3111 |
UON | Y |
Integrated virtual reality jet ball system$20,000
Funding body: University of Newcastle - Faculty of Engineering & Built Environment
Funding body | University of Newcastle - Faculty of Engineering & Built Environment |
---|---|
Project Team | Sarah Johnson |
Scheme | Equipment Grant |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | |
Type Of Funding | Internal |
Category | INTE |
UON | N |
Image processing of neural cell morphology$12,000
Funding body: Faculty of Engineering
Funding body | Faculty of Engineering |
---|---|
Project Team | Sarah Johnson |
Scheme | Strategic Pilot Grant |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2013 |
GNo | |
Type Of Funding | Internal |
Category | INTE |
UON | N |
20123 grants / $435,000
Compression of Digital Data: Bridging The Gap Between Theory and Practice$320,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | A Prof Ingmar Land, Prof Sarah Johnson |
Scheme | Discovery Project |
Role | Investigator |
Funding Start | 2012 |
Funding Finish | 2014 |
GNo | |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | N |
Error correction for quantum key distribution$100,000
Funding body: Enterprise Connect
Funding body | Enterprise Connect |
---|---|
Project Team | Sarah Johnson |
Scheme | Researchers in Business |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | |
Type Of Funding | Other Public Sector - Commonwealth |
Category | 2OPC |
UON | N |
2011 Emerging Research Leaders Program$15,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Emerging Research Leaders Program |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2012 |
GNo | G1201064 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20111 grants / $600,422
New high-performance iterative error correction codes$600,422
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Future Fellowships |
Role | Lead |
Funding Start | 2011 |
Funding Finish | 2018 |
GNo | G1100437 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20101 grants / $150,000
Optimising Cooperation in Multiterminal Wireless Networks$150,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2010 |
Funding Finish | 2012 |
GNo | G0189995 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20081 grants / $335,000
Iterative coding for next generation networks$335,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson, Professor Christopher Kellett |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2008 |
Funding Finish | 2010 |
GNo | G0187513 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20072 grants / $529,312
2007 Research Fellowship$514,312
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Research Fellowship |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2012 |
GNo | G0187099 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
2007 Research Fellowship Project Grant$15,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Fellowship Grant |
Role | Lead |
Funding Start | 2007 |
Funding Finish | 2007 |
GNo | G0188110 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20061 grants / $112,128
Construction methods and analysis tools for repeat-accumulate error correction codes$112,128
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Lead |
Funding Start | 2006 |
Funding Finish | 2008 |
GNo | G0185285 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
20051 grants / $50,000
Australian Communications Research Network (ACoRN)$50,000
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Steven Weller, Professor Brett Ninness, Professor Sarah Johnson |
Scheme | Research Networks |
Role | Investigator |
Funding Start | 2005 |
Funding Finish | 2009 |
GNo | G0186088 |
Type Of Funding | Scheme excluded from IGS |
Category | EXCL |
UON | Y |
20042 grants / $272,466
Structured low-density parity-check codes for next-generation digital communications$257,466
Funding body: ARC (Australian Research Council)
Funding body | ARC (Australian Research Council) |
---|---|
Project Team | Professor Steven Weller, Professor Sarah Johnson |
Scheme | Discovery Projects |
Role | Investigator |
Funding Start | 2004 |
Funding Finish | 2006 |
GNo | G0183017 |
Type Of Funding | Aust Competitive - Commonwealth |
Category | 1CS |
UON | Y |
Design and evaluation of repeat-accumulate error correction codes for digital communications$15,000
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Professor Sarah Johnson |
Scheme | Early Career Researcher Grant |
Role | Lead |
Funding Start | 2004 |
Funding Finish | 2004 |
GNo | G0184996 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Research Supervision
Number of supervisions
Current Supervision
Commenced | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2019 | PhD | Securing Data Communications Using Information Theory | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2019 | PhD | The Development of Bayesian Machine Learning Estimation Techniques with Direct Application to a Clinical Decision Support Tool for Rehabilitation Services | PhD (Mechanical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2019 | PhD | The Effect of Age and Exercise on Cerebral-Vascular Health | PhD (Exercise & Sport Science), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2018 | PhD | Cache-aided Noisy Channels: Optimisation and Security | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
Past Supervision
Year | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2021 | PhD | Indexing Cerebrovascular Health Using Near-Infrared Spectroscopy: A Multi-Model Analysis | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2019 | PhD | Analysis of Microscopy Images: Modelling and Reconstruction | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2018 | Masters | An Analysis of Signal Processing Techniques for Intrinsic Optical Signal Brain Imaging | M Philosophy(Elec Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2018 | PhD | Graphical Approaches to Single-Sender and Two-Sender Index Coding | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2017 | PhD | An Examination of How Environmental Disturbances Alter Microglia Morphology and Function Within the CNS | PhD (Human Physiology), College of Health, Medicine and Wellbeing, The University of Newcastle | Co-Supervisor |
2017 | PhD | Broadcast Channels with Receiver Message Side Information | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2017 | PhD | Multi-Edge Type Density Evolution: Analysis, Code Optimization and Applications to Raptor Code Design | PhD (Electrical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2005 | PhD | The Graphical Structure of Iterative Low-Density Parity-Check Decoding | Electrical Engineering, Australian National University | Co-Supervisor |
Research Collaborations
The map is a representation of a researchers co-authorship with collaborators across the globe. The map displays the number of publications against a country, where there is at least one co-author based in that country. Data is sourced from the University of Newcastle research publication management system (NURO) and may not fully represent the authors complete body of work.
Country | Count of Publications | |
---|---|---|
Australia | 111 | |
United Kingdom | 7 | |
Sweden | 4 | |
Singapore | 4 | |
Germany | 3 | |
More... |
News
University of Newcastle secures over $6 million in ARC funding
November 13, 2020
Partnership sets year 8 girls on STEM path
April 4, 2019
STEM pilot program a great success
November 23, 2017
State leaders in science and engineering announced
October 23, 2017
ARC Discovery Project funding success
November 19, 2014
$300,000 for secure communications research
August 16, 2013
Creative Industries
June 28, 2013
Professor Sarah Johnson
Position
Professor
School of Electrical Engineering and Computing
College of Engineering, Science and Environment
Focus area
Electrical and Computer Engineering
Contact Details
sarah.johnson@newcastle.edu.au | |
Phone | (02) 4921 6028 |
Fax | (02) 4921 6993 |
Office
Room | EA G14 |
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Building | Engineering A Building |
Location | Callaghan University Drive Callaghan, NSW 2308 Australia |