Adaptive relay transmission for ubiquitous gigabit wireless communications

点击翻译按钮获取中文摘要

While the wireless communication industry has witnessed an unpreceded era of exciting developments over the last three decades, the ultimate goal of delivering ubiquitous multimedia services with the same high quality as wire-line systems still requires significant more research efforts. A major design objective of beyond fourth-generation (B4G) wireless systems is the delivery of extremely high data rate services, in the order of multiple gigabits per second, to every eligible users in the system. The proposed research program will develop important cutting-edge enabling techniques for ubiquitous gigabit wireless access. We will devise effective transmission schemes by optimally integrating advanced point-to-point transmission techniques, such as adaptive transmission and reception technique, multiple antenna transmission and reception (MIMO) technique and cross-layer scheduling technique, with cooperative/multihop relaying techniques. Specifically, the following three broad research directions will be actively pursued. First, as multiuser MIMO transmission can effectively explore the spatial degree of freedom for capacity gain, we address the design and analysis of efficient scheduling and signaling schemes for multiuser MIMO systems to maximally benefit from collaborative relay transmission. Secondly, the time varying nature of the wireless propagation channels and user traffic patterns entail an adaptive implementation for high system efficiency. As such, we will develop innovative adaptive signaling schemes for relay/multihop transmission links. Finally, the efficient utilization of the limited resource of wireless systems mandates the operations of different layers in the protocol stack be properly coordinated. We will also investigate the optimal joint design of various adaptive mechanisms in different layers to cost-effectively provide the desired high quality transmission service over multihop wireless links. The resulting multihop multi-antenna adaptive transmission involving multiple layers will provide an attractive novel solution for extremely high rate wireless transmission.