Precoding and Power allocation for Cooperative MIMO systems

摘要：

The fundamental capacity limit in cooperative MIMO channels with one source-destination pair and one relay is investigated. With the channel state information (CSI) at the source and destination, the optimal precode and power allocation to maximize the capacity with the total transmit power constraints are addressed under different cooperative modes including amplify-and-forward (AF), decode-and-forward (DF) and superposition coding (SC). We study the impact of the number of receive antennas, SNR and the distance between relay and destination on the achievable capacity. The Simulation results show that AF, DF and SC have higher spectral efficiency than direct transmission (DT) for the low SNR regime case and small distance between relay and destination case. In general, SC outperforms DF which outperforms AF.

关键词： MIMO relay channels precoding

作者: Chengkang Pan Yueming Cai Youyun Xu

作者单位: Institute of Communications Engineering,PLAUST,Nanjing 210007,China

会议类型: 国际会议

会议名称: 第二届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 武汉

会议语种:英文

在线出版日期: 2006-09-01（万方平台首次上网日期，不代表论文的发表时间）