直扩卫星通信系统中多用户检测算法比较  

Comparison of Multiuser Detection in Direct spread-Code Division Multiple Access of Satellite Mobile Communication System

作　　者：张秋生[1] 贺欢[1] 陈守强[1] 

机构地区：[1]西安通信学院,陕西西安710106

出　　处：《信息安全与通信保密》2007年第7期65-68,共4页Information Security and Communications Privacy

摘　　要：实际在CDMA系统中,多址干扰(MAI)是主要的干扰来源,多用户检测技术完全可以抑制这种多址干扰。论文分析了几种典型的多用户检测技术,并在高斯信道环境下对解相关检测器、最小均方误差检测器和传统检测器进行了仿真和性能比较。The multi-user detection （MUD） is the most important anti-interference technology for CDMA system, and has been a hot spot in telecom research field. In the practical CDMA system most of the interference comes from multiaccess interference （MAI）. Several representative sub-optimal multiuser detectors are analyzed in this paper. And the simulation and the performance comparison of the decorrelating detector, MMSE detecter, conventional detector are conducted under the Gaussian channel environment.

关 键 词：卫星移动通信系统 多用户检测 多址干扰抑制 码分多址 

分 类 号：TN927.2[电子电信—通信与信息系统]