Precoder Design for Distributed Antenna Systems Based on Channel Angular Domain Information
With the goal of further improve the performance of distributed antenna system (DAS), linear precoding along with orthogonal space time block codes (OSTBCs) is introduced to exploit the diversity and coding gains simultaneously. In particular, we propose a novel precoder design method based on channel angular domain information, such as average angle of arrival (AOA), angular spread (AS) and normalized antenna spacing (NAS). The major advantages of this method reside in that it clearly reveals the relationship between the optimal precoder and practical propagation environment. More importantly, it requires very small amount of feedback while guaranteeing good performance. Furthermore, the asymptotical behavior of the performance is analyzed to achieve a suboptimal precoder design method with low complexity. In addition, the impact of angular domain parameters on system performance are investigated in some detail. Finally, numerical results verify the effectiveness of our proposed scheme.
Xiaoming Chen Zhaoyang Zhang
Institute of information and communication Engineering, Zhejiang University, Hangzhou 310027, China Zhejiang provincial key laboratory of information network technology, Hangzhou 310027, China
国际会议
2009国际通信电路与系统学术会议(ICCCAS 2009)(2009 International Conference on Communications，Circuits and Systems)
成都
英文
133-137
2009-07-23（万方平台首次上网日期，不代表论文的发表时间）