反乘幂法MMSE信道缩短均衡器设计  

MMSE Channel-shortening Equalizer Using Inverse Power Method

作　　者：陆芳[1] 邢志勇[2] 林生森[3] 

机构地区：[1]第二炮兵装备研究院信息所,北京100085 [2]解放军理工大学通信工程学院研究生1队,江苏南京210007 [3]解放军理工大学通信工程学院研究生2队,江苏南京210007

出　　处：《军事通信技术》2006年第3期39-42,共4页Journal of Military Communications Technology

摘　　要：均衡技术用于抵抗多径效应,最优的均衡器是使用维特比算法的最大似然序列估计,但其复杂程度随信道长度呈指数增长。文中通过信道缩短均衡降低其复杂度,并提出一种反乘幂最小均方误差算法。仿真结果证明新算法性能优良,且计算高效。Channel equalization techniques are used for resisting the multipath effect, and MLSE equalizer with a Viterbi algorithm is optimal,but its complexity grows exponentially with the channel length. Channel-shortening equalizers were designed to reduce the complexity of the maximum likelihood estimator,and a MMSE algorithm using the inverse power method was proposed. Simulation results prove the good performance and computational efficiency of the new algorithm.

关 键 词：最大似然序列估计 信道缩短均衡器 最小均方误差 

分 类 号：TN911.5[电子电信—通信与信息系统]