一种新的并行干扰消除Rake系统  

New Parallel Interference Elimination System for RAKE systems

作　　者：宋立新[1] 黄天戍[1] 崔少国[2] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079 [2]郧阳医学院计算机课部,湖北十堰442000

出　　处：《洛阳师范学院学报》2006年第5期93-96,共4页Journal of Luoyang Normal University

基　　金：湖北省教育厅2004自然科学重点项目(2004D002)

摘　　要：为了消除DS CDMA系统中的多径干扰,本文提出了一种新的采用并行干扰消除算法的Rake系统:数据符号的假设检验值通过线性判决获得,根据假设检验值和其它已知用户信息估计多径干扰,然后进一步分析了该系统在Rayleigh衰落信道下的性能并与传统的并行干扰消除算法、传统的Rake接收机进行了比较.结果表明:该系统不仅可大大改进传统Rake接收机性能,且结构简单、易于实现.In order to suppress the multi-path interference （MPI） in the DS CDMA system, a new RAKE receiver based on parallel interference elimination is first proposed in this paper： data symbol tentative decision is obtained by linear decision; the multi-path interferences are evaluated by tentative decision and known user information. Then the performances over Rayleigh fading channel are analyzed and compared to conventional parallel interference cancellation （PIC） and Rake receiver. It is shown that RAKE receiver performance can be improved greatly by using this method with simple structure and easy implementation.

关 键 词：并行干扰消除 RAKE接收机 多径干扰 RAYLEIGH衰落 

分 类 号：TN914.53[电子电信—通信与信息系统]