异步CDMA在多径环境下的最优接收算法  

Optimum Detection of Asynchronous CDMA Multiple Access Signals under Multipath Channel

作　　者：张武荣[1] 吴伟陵[1] 

机构地区：[1]北京邮电大学信息工程系

出　　处：《北京邮电大学学报》1997年第2期78-83,共6页Journal of Beijing University of Posts and Telecommunications

摘　　要：讨论了多用户异步ＣＤＭＡ系统中多径信号的最大似然检测问题，同时给出了算法的具体实现．算法中，每一条多径信号等效为一个独立的单径用户．算法的复杂度分析表明，虽然等效用户数增加了，但是实际检测算法的复杂度并没有增加．This article deals with the optimum receiver for asynchronous multipath CDMA signals by employing maximum likelihood detection, this technique is referred as multi user detector.Two practical algorithms are derived along with their computational complexity analysis.We assume every path of each user as an independent user,but the computational complexity remains the same as that of the single path case.The results of this article are helpful of determining the upper performance limit of the CDMA receiver.

关 键 词：移动通信 码分多址 联接 信号检测 

分 类 号：TN911.23[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]