DS/CDMA系统上行链路一种稳健的阵列接收方法  

A Robust Array Processing Scheme for the Uplink of DS-CDMA System

作　　者：张华[1] 龚耀寰[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《信号处理》2002年第4期311-315,307,共6页Journal of Signal Processing

基　　金：国防科技预研基金及中兴通信基金资助项目

摘　　要：W G.Hou等对DS/CDMA移动通信系统上行链路提出了通过估计空间到达角（DOA）而进行波束形成的空间滤波方法,本文首先对该方法进行了从对移动台的初始DOA定位到跟踪的大量改进,使该方法对期望用户的跟踪和对干扰用户进行空域抑制更为准确和有效。然后将算法与导频位辅助LMS-DRMTA算法进行了比较,该方法比导频位辅助LMS-DRMTA算法具有更小的运算量,更好的稳定性,当扇区激活用户数较大时,该方法还具有更低的误码率（BER）,该阵列接收法更适合大容量的移动通信系统。An improved algorithm for direction of arrival (DOA) tracking array processing algorithm proposed by W. G. Hou is presented in this paper. The improvements including the estimation of the initial DOA of the desired user and the tracking of the DOA, which make the algorithm works more effectively in interference cancellation in space domain. Then the comparison between this array processing method and the pilot-assisted LMS-DRMTA algorithm is provided, and the results show that DOA tracking array processing algorithm has less computation complexity and higher stability than pilot-assisted LMS-DRMTA algorithm. The simulation result shows that DOA tracking array processing algorithm is more appropriate for large capacity mobile communication systems.

关 键 词：DS/CDMA系统 上行链路 阵列接收方法 智能天线 波束形成 多址干扰 移动通信系统 角度跟踪 

分 类 号：TN929.5[电子电信—通信与信息系统]