码分多址系统中智能天线的实现形式  

Scheme of Smart Antenna in CDMA System

作　　者：崔炎[1] 吕善伟[1] 佟木林 

机构地区：[1]北京航空航天大学电子工程系,北京100083 [2]中国网通通辽市通信分公司,内蒙古通辽028000

出　　处：《吉首大学学报（自然科学版）》2003年第4期24-26,共3页Journal of Jishou University(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60271012)

摘　　要：码分多址技术逐渐成为新一代通信系统的主流多址技术,如何在码分多址系统中引入空域处理以改善系统性能是当前智能天线技术研究的重点之一.考虑到无线信道的时空二维结构特征,一种合理的实现方式是采用时空处理方法,将波束形成技术与时域分集技术相结合;另一种更有效的方法是在接收端采用时空二维联合处理,对无线信道进行时空二维均衡.With the trend that CDMA will be the dominant multi-access scheme in the new generation of wireless communication,how to apply spatial processing in CDMA system has been becoming the emphasis of research in smart antenna.A proper method is space-time processing due to the space-time structure of wireless channel.Beamforming can be combined with RAKE to form 2D RAKE receiver,which can effectively weaken the enhancement of MAI in conventional RAKE receiver.However a more effective method is to use space-time filtering.These two scheme will be discussed and the structure and realization will be presented.

关 键 词：码分多址系统 智能天线 多址技术 空域处理技术 无线信道 CDMA系统 时空二维处理技术 

分 类 号：TN929.533[电子电信—通信与信息系统] TN821.91[电子电信—信息与通信工程]