数据采集与处理2016，Vol.31Issue(2)：276-281,6.DOI:10.16337/j.1004-9037.2016.02.006
全双工MIMO中继系统中一种高性能波束成形算法
High-Performance Beamforming Algorithm for Full-Duplex MIMO Relay System
摘要
Abstract
Compared to half‐duplex relay systems ,full‐duplex relay systems can greatly improve the spec‐tral efficiency .However ,the information leakage between transmitter and receiver of relay degrade the performance of full‐duplex system .To deal with the self‐interference and enhance the system achievable rate in full‐duplex MIMO relay system with decoded‐and‐forward strategy ,an iterative beamforming structure at the relay is proposed .In this structure ,the received and transmit beamforming at the relay are optimized with minimum mean square error (MMSE) criterion over both uplink and downlink (called MMSE plus MMSE) .And then the two beamforming matrices are combined for optimal solutions .Simu‐lation results show that the proposed MMSE plus MMSE performs better than existing schemes like null space projection (NSP) and maximum signal‐to‐interference ratio (Max‐SIR) .For example ,The pro‐posed algorithm harvests about 0 .8 bps/Hz gain over the Max‐SIR when SNR is high .At the BER=10-3 ,the proposed scheme harvests about 1 .5 dB SNR gain over the Max‐SIR .关键词
全双工/多输入多输出/波束成形/最小均方误差Key words
full-duplex/MIMO/beamforming/minimum mean square error(MMSE)分类
信息技术与安全科学引用本文复制引用
束锋,崔玉荻,钱振宇,陆造宇,周叶,胡锦松,刘苗..全双工MIMO中继系统中一种高性能波束成形算法[J].数据采集与处理,2016,31(2):276-281,6.基金项目
国家自然科学基金（61271230，6147210）资助项目；电子科技集团公司第二十二所电波环境特性及模块化技术国防科技重点实验室开放课题（201500013）资助项目；东南大学移动通信国家重点实验室开放课题（2013D02）资助项目。 （）
