一种空时盲RAKE接收机  

A Space-Time Blind RAKE Receiver

作　　者：王伶[1] 刘芳[1] 焦李成[1] 

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

出　　处：《系统工程与电子技术》2002年第8期38-42,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金资助课题 (60 0 73 0 5 3 ;60 13 3 0 10 )

摘　　要：多用户检测和阵列天线是直扩码分多址系统中两种减轻多址干扰的关键技术 ,将两者结合起来的空时处理能大大提高系统的容量和性能。设计了一种空时盲RAKE接收机。研究结果表明 ,这种空时盲RAKE接收机具有较强的抑制多址干扰以及克服多径效应和“远近”效应的能力 ,并且能快速收敛。Multiuser detection and array antenna are two key techniques reducing the effect of multiple access interference(MAI) in DS CDMA. Space time processing which combines these two methods can improve the performance and capacity of the system greatly. In this paper,a novel space time blind RAKE receiver is proposed. With numerical simulations and performance analysis, it is shown that the receiver precedes the conventional space time 2 dimensional RAKE receiver in eliminating MAI and resisting multipath and 'near far' effects. Furthermore,the adaptive version of the receiver can converge rapidly.\;

关 键 词：空时盲 RAKE接收机 直扩-码分多址 空时处理 多址干扰 多径衰落 移动通信 DS-CDMA 

分 类 号：TN929.533[电子电信—通信与信息系统]