Photonic Crystal Signal Processing and Antenna Technologies. The information society in which we live requires increasingly high bandwidth, low cost communications. This project addresses two critically important technologies needed to meet these demands: signal processing devices and antennas. These devices will be designed using three-dimensional photonic crystals, which provide excellent possibilities for low-cost, highly integrated photonic circuits. Working prototypes will be built at micro ....Photonic Crystal Signal Processing and Antenna Technologies. The information society in which we live requires increasingly high bandwidth, low cost communications. This project addresses two critically important technologies needed to meet these demands: signal processing devices and antennas. These devices will be designed using three-dimensional photonic crystals, which provide excellent possibilities for low-cost, highly integrated photonic circuits. Working prototypes will be built at microwave frequencies, but due to the scalability of electromagnetic theory these results are also valid in the optical domain. The outcomes of this project will be accurate theoretical models and empirical tests for new technologies that satisfy the future needs of the information society.Read moreRead less
Novel coherence-free photonic microwave signal processors. With the increasing bandwidth requirements of information signals, there is an unprecedented challenge to provide high-speed and high resolution systems for signal processing. The new photonic signal processors in this project will herald in a new epoch in the ability to optimally condition wideband signals, with important applications for science, business and security services. These processors will have particular impact in transcendi ....Novel coherence-free photonic microwave signal processors. With the increasing bandwidth requirements of information signals, there is an unprecedented challenge to provide high-speed and high resolution systems for signal processing. The new photonic signal processors in this project will herald in a new epoch in the ability to optimally condition wideband signals, with important applications for science, business and security services. These processors will have particular impact in transcending exisiting electronic processor limitations and in enhancing fibre-fed distributed antenna systems, with benefits to Australia in the fields of radioastronomy and radar systems in defence.Read moreRead less
Novel coherence-free microwave photonic signal processors. With the unrelenting push for increasing bandwidth requirements, there is an unprecedented challenge to provide high-performance systems for high-bandwidth signal processing. In areas such as fibre-wireless networks, radioastronomy, and defence, it is essential to pre-process the wideband fibre-fed distributed antenna signals. The new coherence-free, high-frequency, low-noise photonic signal processors, in this project have important app ....Novel coherence-free microwave photonic signal processors. With the unrelenting push for increasing bandwidth requirements, there is an unprecedented challenge to provide high-performance systems for high-bandwidth signal processing. In areas such as fibre-wireless networks, radioastronomy, and defence, it is essential to pre-process the wideband fibre-fed distributed antenna signals. The new coherence-free, high-frequency, low-noise photonic signal processors, in this project have important applications for science, business and security services. The results have widespread uses in enhancing fibre-fed distributed antenna systems, with national benefits in the fields of radioastronomy and radar systems in defence.Read moreRead less
Dynamically tunable, low-noise, discrete-time optical processing of high-speed signals. In today's society there is an unrelenting push for increasing bandwidth requirements. Thus the challenge arises to provide systems that can optimally condition high-speed signals. Many systems carry not only the desired information but also high level interference signals. Tunable interference mitigation is required to address different interferers actively while having minimal impact on the passband. The ne ....Dynamically tunable, low-noise, discrete-time optical processing of high-speed signals. In today's society there is an unrelenting push for increasing bandwidth requirements. Thus the challenge arises to provide systems that can optimally condition high-speed signals. Many systems carry not only the desired information but also high level interference signals. Tunable interference mitigation is required to address different interferers actively while having minimal impact on the passband. The new dynamically tunable photonic signal processors in this project have important applications for science, business and security services. The results have widespread uses in enhancing fibre-fed distributed antenna systems, with national benefits in the fields of radioastronomy and radar systems in defence.Read moreRead less
New paradigms for high-resolution microwave photonic signal processing. In today's society there is an unrelenting push for increasing bandwidth requirements. Thus there are unprecedented challenges to provide systems that can optimally condition high-speed signals. Many systems carry not only the desired information but also high-level interference signals. Tunable interference mitigation is essential to address different interferers actively while having minimal impact on the required signal. ....New paradigms for high-resolution microwave photonic signal processing. In today's society there is an unrelenting push for increasing bandwidth requirements. Thus there are unprecedented challenges to provide systems that can optimally condition high-speed signals. Many systems carry not only the desired information but also high-level interference signals. Tunable interference mitigation is essential to address different interferers actively while having minimal impact on the required signal. The new dynamically reconfigurable photonic signal processors in this project have important applications for science, business and security services. The results have widespread uses in enhancing fibre-fed distributed antenna systems, with national benefits in the fields of radioastronomy and radar systems in defence.Read moreRead less
New Photonics-based Interference Mitigation Filters for Radioastronomy. This project aims to study new topologies for photonics-based interference mitigation filters for radioastronomy. Its significance is that it will solve, for the first time, the problem of excising RF interfering signals from within the optical signal fibre transport systems conveying radioastronomy signals from phased array antennas. These interference suppressors are key elements in removing strong unwanted man-made signal ....New Photonics-based Interference Mitigation Filters for Radioastronomy. This project aims to study new topologies for photonics-based interference mitigation filters for radioastronomy. Its significance is that it will solve, for the first time, the problem of excising RF interfering signals from within the optical signal fibre transport systems conveying radioastronomy signals from phased array antennas. These interference suppressors are key elements in removing strong unwanted man-made signals from terrestrial transmitters and satellites that coexist, and make the detection of the very weak radioastronomy signals extremely difficult. The outcome will be new high-resolution and tunable fibre-based interference suppression filters integrable with the signal transport system, which enhance the sensitivity of radioastronomy phased arrays.Read moreRead less
Integration of Wireless LAN and GPRS/UMTS Cellular Systems. Integration of wireless local area networks with cellular mobile systems provides a feasible, reliable, and cost-effective way for high-speed mobile Internet access in wide area networks. In this project in collaboration with Australia's second largest telecommunications company; Optus, we will develop network architecture and essential access and mobility techniques for such a system. The project's outcomes will enable Optus to expand ....Integration of Wireless LAN and GPRS/UMTS Cellular Systems. Integration of wireless local area networks with cellular mobile systems provides a feasible, reliable, and cost-effective way for high-speed mobile Internet access in wide area networks. In this project in collaboration with Australia's second largest telecommunications company; Optus, we will develop network architecture and essential access and mobility techniques for such a system. The project's outcomes will enable Optus to expand its broadband mobile Internet service to all parts and population of the country including rural and regional areas and subsequently export the breakthrough technology resulted from the project to overseas.Read moreRead less
Broadband and Multiband Antenna Systems. Wireless communication has become essential in the modern information society and this has created a rapidly growing, multi-billion dollar market for innovative wireless products. Australia has a strong potential to gain from this market, as demonstrated by world-leading products, e.g. wireless computer microchips. By developing innovative antenna systems with new capabilities, the proposed research will create opportunities for Australian industry to com ....Broadband and Multiband Antenna Systems. Wireless communication has become essential in the modern information society and this has created a rapidly growing, multi-billion dollar market for innovative wireless products. Australia has a strong potential to gain from this market, as demonstrated by world-leading products, e.g. wireless computer microchips. By developing innovative antenna systems with new capabilities, the proposed research will create opportunities for Australian industry to compete in the global wireless market with advanced, low-cost, high-performance, and universal products. The Australian research community will benefit from new theoretical techniques and trained researchers, while wireless users will benefit from improved quality and low cost of services.Read moreRead less
Channel Adaptive Space-Time (CAST) Coding and Processing for Wireless Downlink Packet Services. Recently, the capacity of the broadcast channel with multiple antennas is investigated. Various space-time (ST) processing techniques to adapt channel conditions are utilized to increase capacity. Precoding becomes vital to deal with interferers and cooperation problems efficiently. ST codes will be investigated in conjunction with precoding. We aim to investigate channel adaptive ST coding and precod ....Channel Adaptive Space-Time (CAST) Coding and Processing for Wireless Downlink Packet Services. Recently, the capacity of the broadcast channel with multiple antennas is investigated. Various space-time (ST) processing techniques to adapt channel conditions are utilized to increase capacity. Precoding becomes vital to deal with interferers and cooperation problems efficiently. ST codes will be investigated in conjunction with precoding. We aim to investigate channel adaptive ST coding and precoding techniques to achieve the maximum capacity with practical quality of service requirements. Although the capacity is extensively investigated, implementation methods are relatively less investigated. This project is to fill the cap between implementation (ST coding and precoding methods as outcomes) and theory (capacity analysis).Read moreRead less
Microwave Antennas based on Metamaterials. This project concerns one of the most exciting and dynamic areas of research at present. Metamaterials have tremendous potential, with the promise of multitudinous applications in microwave, optical and optoelectronic fields. This project will contribute towards the ARC priority goal on advanced materials and frontier technologies by (a) developing new synthesized materials which have special properties not found in nature, and (b) developing new techn ....Microwave Antennas based on Metamaterials. This project concerns one of the most exciting and dynamic areas of research at present. Metamaterials have tremendous potential, with the promise of multitudinous applications in microwave, optical and optoelectronic fields. This project will contribute towards the ARC priority goal on advanced materials and frontier technologies by (a) developing new synthesized materials which have special properties not found in nature, and (b) developing new technologies to deliver practical benefits for communication systems users by exploiting these materials. Other benefits for Australia include intellectual property and patent outcomes, which may help Australia to become a leader in metamaterial-based technologies.Read moreRead less