CDMA/SDMA系统性能分析  

A Performance Analysis of CDMA/SCDMA System

作　　者：王新[1] 李宝平[1] 

机构地区：[1]南京邮电大学,江苏南京210003

出　　处：《通信技术》2007年第11期139-141,共3页Communications Technology

摘　　要：空分多址接入技术(SDMA)可以通过信号不同的空间传播路径来区分用户,从而提高了蜂窝移动通信系统容量。而此技术又可以和其他多址方式相互兼容,比如频分多址,时分多址,码分多址。CDMA/SDMA系统就是码分多址和空分多址两种接入技术相结合的系统。该系统可通过时空编码实现的。文中分析此种系统的性能,并与多用户环境下的CDMA系统进行了比较。Space division multiple access （SDMA） is a technique which can be used to increase the capacity of mobile communication systems by exploiting the spatial separation between users. And this techniques can be integrated with different multiple access techniques, such as FDMA, TDMA and CDMA. SDMA and CDMA are combined to produce a new architecture for CDMA/SDMA cellular system. This system can be implemented by a space time block code. This paper analyzes the performance of this system and makes comparison of CDMA/SDMA with CDMA under multiuser environment.

关 键 词：码分多址 空分多址 时空分组码 

分 类 号：TN929.5[电子电信—通信与信息系统]