一种基于MIMO预编码的多径分离方法  

Method of multi-path separation based on precoding over frequency selective MIMO channel

作　　者：张艳语[1] 朱义君[1] 张水莲[1] 

机构地区：[1]解放军信息工程大学信息工程学院,河南郑州450002

出　　处：《电子技术应用》2012年第5期101-105,共5页Application of Electronic Technique

基　　金：国家重大科技专项(2009zx03003-005;2009zx03007-003)

摘　　要：针对选择性MIMO信道多经分离问题,提出了一种基于预编码的收发联合设计方案。该方案中的每路发射矢量及其解码矩阵处于其他时延信道的共同零空间,把选择性信道多径分离为空间正交的若干平坦子信道,从而使平坦信道的预编码研究成果可以直接应用于选择性MIMO信道,解决了传统Z域处理中未消除ISI的问题,复杂度为Z域方法的L(多径数目)倍。仿真结果表明,该算法具有较好容量性能和误码率性能。In frequency-selective MIMO channel,a null space based linear transceiver scheme based on precoding was pro- posed. Each data vector and corresponding decoding matrix are in the joint null space of other delay channel matrices.Frequency- selective MIMO channel is transformed into several spatially orthogonal fiat matrix sub-channels.The preeoding research over fre- quency fiat channel is directly applicable to the selective channel,thoroughly removing up ISI problem of Z domain method with i- dentical computation. Simulation results show that the proposed algorithm is of better capacity and error performance.

关 键 词：多入多出 频率选择性信道 预编码 多径 

分 类 号：TN929.5[电子电信—通信与信息系统]