Reliable Information Transmission Techniques for Multi-Terminal Communication

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This proposed research program focuses on increasing data transmission speeds in future wireless and optical communication systems through the use of advanced coding, modulation and signal processing techniques. The program objectives focus on design and application of communication and signal processing techniques that can better utilize both the existing and emerging communication spectrum. As opposed to traditional communication systems, where data are transmitted at so called Nyquist rate which is equal to twice the available communication channel bandwidth, this research program focuses on Faster-than-Nyquist communication, where  data are sent over a physical communication channel at rates exceeding the Nyquist rate. The Faster-than-Nyquist transmission approach has an inherent potential to significantly increase the speed of communication, but exceeding the Nyquist rate limit leads to very severe inter-symbol interference that prevented practical development and utilization of these communication systems until very recently.   In particular, multi-terminal, multi-user and continuous-time structure of the physical communication channels will be modeled when Faster-than-Nyquist transmission is utilized. The obtained new channel models will be for communication in one-to-many (uplink), many-to-one (downlink) and many-to-many (relay, collaborative and/or multi-antenna) settings, which have not been studied for the Faster-than-Nyquist transmission by others. The obtained channel models will be  analyzed for their channel capacity and interference structure, then exploited in order to achieve order of magnitude improvements in obtained communication bandwidth utilization (spectral efficiency) and user data rates. Furthermore, design of concatenated error-control codes (e.g., turbo, low-density parity check, Raptor and/or polar), advanced modulation techniques for faster-than-Nyquist transmission, iterative turbo signal processing and multi-antenna/port technology will result in system architectures that can practically achieve envisioned goals of system level improvements. The obtained research results and techniques will lead to better communication spectrum utilization and faster communication speeds. This work  and its applications will be of interest and benefit to telecommunication equipment and infrastructure manufacturers in Canada (e.g., Ericsson Canada, Huawei, Ciena, Blackberry) and will also provide benefits to telecom service providers (e.g., Bell Canada, Videotron, Rogers, Telus). Throughout the proposed research program, graduate students (5 PhD and 10 MEng level) and 10 research undergraduate students will be trained, acquiring cutting edge knowledge and research skills in communication systems,  signal processing and coding techniques that will enable them to obtain future employment in industry and academia.