基于MMSE的快跳频系统多用户检测算法  

MMSE-based multiuser detection algorithm for fast frequency hopping communication systems

作　　者：刘传清[1] 胡修林[1] 张蕴玉[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第7期18-21,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：针对快跳频多址系统,提出了基于最小均方误差(MMSE)准则的多用户检测算法.首先对接收矩阵的最大行进行判决,计算最大行信号的接收功率平均值和最小均方误差,选择最小MMSE的行作为期望用户的检测输出.仿真结果表明,本算法能提高无中心功率控制网络的容量和比特错误概率(BER)性能,同时,适合异步跳频网络的信号检测.A multi-user detection （MUD） algorithm for fast frequency hopping multiply access/multi-level frequency shift keying communication systems is proposed, based on minimum mean square error （MMSE）. The algorithm first detected the majority of receiving time-frequency matrix, and then calculates the average and minimum mean square error of correspondence majority, and the minimum MMSE majority were selected for desire user. The proposed algorithm is very suit for distribution networks of no power control, it has the capability of resistant false alarm and fading. Simulation results show that proposed algorithm can improve bit error rate （BER） performance in peer to peer networks, meanwhile, it can improve BER performance of asynchronous frequency hopping communications systems.

关 键 词：频跳多址通信 最小均方误差 多用户检测 中心控制 

分 类 号：TN929.5[电子电信—通信与信息系统]