低复杂度MIMO检测技术分析  

Analysis on Low-complexity MIMO Detection Technology

作　　者：魏淑君[1] 王东[1] 武钢[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2011年第12期50-52,55,共4页Radio Engineering

摘　　要：为了克服多径传播对信号传输的影响,提出了多入多出(MIMO)检测的3种低复杂度算法,给出了各种算法的具体原理,特别对基于Chase原理的检测算法进行了介绍,论述了相对于最大似然算法可减低复杂的程度,研究了各种算法的误码率性能及复杂度。给出了2发2收MIMO系统和3发3收MIMO系统的仿真结果。结果表明,球形译码算法和基于Chase原理的MIMO检测算法能以比较低的复杂度,获得逼近最大似然检测算法的误码率性能。研究的检测算法为MIMO无线通信接收机的硬件实现提供了理论基础。In order to overcome the effect of multi - path propagation on signal transmission, three low - complexity MIMO detection algorithms were proposed. The idiographic principles of the three algorithms were also presented. The detection algorithm based on Chase principle was especially introduced and its complexity reduction was discussed compared to the maximum likelihood algorithm. The error performance and complexity of the three algorithms were investigated, and the simulation results of 2Tx _ 2Rx MIMO system and 3Tx _ 3Rx MIMO system were provided. The simulation results shows that the spherical decoding algorithm and MIMO detection algorithm based on Chase principle can approach the error performance of maximum - likelihood detection algorithms in a low complexity. This detection algorithm will provide theoretical foundation for the hardware implementation of MIMO wireless communication receiver, and possess a high application value.

关 键 词：MIMO检测 最大似然(ML)检测 球形译码 Chase检测 

分 类 号：TN929[电子电信—通信与信息系统]