Approaching Downlink Capacity of Multiplexing Relay Channels with Imperfect Channel Information

摘要：

This paper studies the multi-antenna relay downlink channel with quantized channel information feedback from both two-bop links. By characterizing the system capacity loss due to channel quantization, we propose a strategy of controlling feedback sizes to help the system approach the channel capacity with respect to full channel information case within an arbitrary predetermined capacity loss. It reveals that the feedback load B1 from the relay station (RS) to the base station (BS) needs to scale in proportion to both the transmit power at the BS and RS while the feedback size B2 from each user to the RS only needs to scale linearly with the transmit power at the RS. Simulation results illustrate the effectiveness of the proposed design strategy.

作者: Wei Xu Le Liang

作者单位: National Mobile Communications Research Laboratory,Southeast University, Nanjing 210096, China

会议类型: 国际会议

会议名称: 2012 4th International High Speed Intelligent Communication Forum(2012年国际高速智能通信论坛 HSIC2012)

会议地点: 南京

会议语种:英文

页码: 136-138

在线出版日期: 2012-05-17（万方平台首次上网日期，不代表论文的发表时间）