Research Fellows Directory
Dr Yiqing Zhou
University of Kent at Canterbury
My research interests are in advanced technologies for broadband wireless communications (BWC), including synchronization for BWC on high speed rails (HSRs), interference management in heterogeneous wireless networks, cooperative communications, and green radio. In the past year, I am mainly focused on the dynamic Doppler tracking in LTE(long term evolution)-based BWC on HSRs. With the rapid development of HSRs and BWC around the world, there is a strong demand from passengers for multimedia wireless services on HSRs. Since existing systems cannot fully satisfy the broadband communication requirements on high speed trains (HSTs), LTE-based systems will be employed in the future. However, various challenges occur when LTE is used on HSRs, among which a serious one is the synchronization due to the difficulty to track dynamic and high Doppler shifts in HSR scenarios. Without accurate synchronization, the performance of BWC on HSRs cannot be ensured. My research targets to analyze the features of BWC on HSRs and design effective algorithms to track dynamic and high Doppler shifts in various HSR scenarios, i.e., when a HST moves through urban areas, rural areas, tunnels, elevated lines, and so on. With good synchronizations, LTE-based BWC systems can work properly on HSRs and high speed data transmission is possible. The output of this research will help the deployment of LTE on HSRs and improve the system performance. When people can freely enjoy various multimedia services on HSRs, we hope that the algorithms developed in this research are working in the LTE-based BWC systems.