无线通信中Turbo均衡技术及应用  

Turbo equalization technique and application for wireless communication

作　　者：韩琮[1] 郭淑霞[1] 陈志坤[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《计算机工程与应用》2008年第30期105-107,198,共4页Computer Engineering and Applications

基　　金：国家自然科学基金No.60572098~~

摘　　要：主要对Turbo均衡的原理和几种算法进行了较详尽地讨论和比较,并针对典型的无线信道,在信道参数已知的情况下,对不同的联合均衡和译码算法、不同迭代次数对系统性能的影响进行了仿真和比较,从复杂度和误码性能两方面考虑,选择适合于无线信道的Turbo均衡算法,结果表明,LCMMSE/SOVA算法在迭代几次以后具有良好的误码性能,且计算复杂度低,利于工程实现。This paper mainly discusses the principle and compares different algorithms on Turbo equalization,then simulates Turbo equalization performances on representative wireless channel,and compares the effect of different joint equalization and decoding algorithms and iterations on system performance over wireless channel with severe ISI.Results show that the low-complex MMSE/SOVA algorithm obtains better bit en＇or performance and robustness after several iteration,and can be implemented easily in project.

关 键 词：TURBO原理 TURBO均衡 符号间干扰 最小均方误差 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]