MIMO-OFDM系统中迭代检测算法的研究  

Iterative Detection Algorithm in MIMO-OFDM System

作　　者：程莉[1] 许楠[1] 邹连英[1] 郑宽磊[1] 

机构地区：[1]武汉工程大学电气信息学院,武汉430205

出　　处：《计算机与数字工程》2013年第5期705-708,共4页Computer & Digital Engineering

摘　　要：为了保证MIMO-OFDM系统在频率选择性衰落信道下传输性能,以及提高系统的编码增益,在系统中采用MMSE检测算法和log-MAP算法相结合的迭代检测算法,为了更好地利用软信息,这两种算法中间通过交织器进行连接。仿真结果证明,在不同天线系统,不同衰落信道条件下,该算法具有良好的性能增益。In order to guarantee the transmission performance of MIMO-OFDM system in frequency selected fading channel,and improve the system coding gain,iterative detection algorithm combining MMSE detection algorithm with log-MAP algorithm was used in MIMO-OFDM system.To make better use of soft information,two kinds of algorithms were connected by the mixed device.The simulation results show that the proposed algorithm has good performance gain not only in different antenna systems,but also in different fading channels.

关 键 词：迭代检测 软信息 最小均方误差 对数最大似然 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]