自干扰抵消盲空时DS-CDMA信号检测技术  

A Self-Interference Cancellation Technique for Improving Blind Space-Time DS-CDMA Detectors

作　　者：廖桂生[1] 黄晖[1] 史学鹏[1] 

机构地区：[1]西安电子科技大学雷达信号处理重点实验室,陕西西安710071

出　　处：《电子学报》2002年第3期447-449,共3页Acta Electronica Sinica

基　　金：国家教育部<跨世纪优秀人才培养计划>基金;国家自然科学基金 (No .6980 2 0 0 9)

摘　　要：针对传统单用户检测器存在远近效应和性能下界问题 ,近年来提出的一系列最大SINR准则盲空时RAKE接收机 ,可以较好地合并期望用户的多径分量 ,同时抑制多址干扰用户能量 .本文对这类接收机进行了进一步的研究 ,提出了一种自干扰抵消方法 ,更有效地克服了单用户检测器存在的性能下界以及远近效应问题 .A conventional single user type detector is known to have an irreducible error floor and cannot handle the near far problem in CDMA cellular communications.Recently,a series of maximum SINR blind space time CDMA RAKE receivers designed to tackle the near far problem have been proposed.However,the interference suppression performances of these algorithms suffer from great degradation caused by the interference covariance matrix containing desired signals,which is called self interference in this paper.This work proposes a novel self interference cancellation technique to enhance their interference rejection capability.Simulation results demonstrate that the proposed technique offers high performance.

关 键 词：盲空时处理 盲检测 信号检测 自干扰抵消 DS-CDMA 

分 类 号：TN929.533[电子电信—通信与信息系统] TN911.23[电子电信—信息与通信工程]