频率选择性信道下的一种新的V-BLAST检测方法  

A novel method of detection for V-BLAST on frequency-selective channel

作　　者：任霄函[1] 何培宇[1] 杜光宇[1] 高勇[1] 

机构地区：[1]四川大学电子信息学院,成都610064

出　　处：《四川大学学报（自然科学版）》2009年第1期129-133,共5页Journal of Sichuan University(Natural Science Edition)

基　　金：通信抗干扰技术国家重点实验室资助项目(9140C0202020802)

摘　　要：在V-BLAST系统中,针对频率选择性信道,提出了一种基于最小递归二乘(RLS)算法,结合多输入多输出的判决反馈均衡和并行干扰对消(RLS-MIMO-PIC-DFE)的检测方法。该法将干扰信号作为新的反馈滤波器并行输入,并行干扰对消系数等效为加长的滤波器系数,并通过RLS算法进行自适应更新。仿真结果表明,与其它方法比较,该法能够得到更好的误符号率性能。In V-BLAST system, a detection method combined with Multi-Input Multi-Output Decision Feedback Equalization and Parallel Interference Cancellation based on Recursive Least Squares （RLS） algorithm （RLS-MIMO-PIC-DFE） is proposed for frequency-selective channel. The interference is used as parallel input into a new feedback filter in this method. The coefficients of interference cancellation as the coefficients of the new filter are renewed by RLS algorithm. The results of simulation demonstrate that the method proposed in this paper is superior to some other relevant methods on Symbol Error Rate （SER） performance.

关 键 词：垂直分层空时系统 频率选择性信道 并行干扰对消 最小递归二乘 判决反馈均衡 

分 类 号：TN91[电子电信—通信与信息系统]