基于独立分量分析的DS-CDMA多用户检测方法  

Multiuser detection based on independent component analysis in DS-CDMA system

作　　者：王彤[1] 李晓辉[1] 

机构地区：[1]安徽大学电子科学与技术学院,合肥230039

出　　处：《信息技术》2009年第8期35-37,共3页Information Technology

基　　金：安徽省高等学校自然科学研究重点项目(KJ2009A57)

摘　　要：将独立分量分析应用于DS-CDMA系统的多用户检测中,提出了基于ICA后处理的匹配滤波多用户检测方法。该方法用匹配滤波器的输出初始化独立分量分析的迭代,然后用快速ICA算法改进初始估计。仿真结果表明:文中提出的方法在高信噪比的情况下,误码性能得到了较大改善。In this paper, Independent Component Analysis （ICA） techniques are considered in DS-CDMA communication system. Comparing the matrix CDMA signal model with the matrix noisy linear ICA model shows that it has the same form as the ICA model. Therefore, we proposes a method of matched filter multiuser detection based on ICA. The method can initialize the ICA iteration by using the matched filter methods for symbol outputs, and then improve this initial estimate using the fast ICA algorithm. The simulation results show that the bit-error-rate of method proposed in this paper can be greatly improved when the signal-noise-ratio is high.

关 键 词：码分多址 多用户检测 独立分量分析 匹配滤波 

分 类 号：TN911.5[电子电信—通信与信息系统]