宽带码分多址系统下行链路软切换技术的研究  

Research on Soft Handover Technology of Downlink WCDMA System

作　　者：朱小刚[1] 诸鸿文[1] 戎蒙恬[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《电子学报》2001年第6期774-777,共4页Acta Electronica Sinica

摘　　要：本文对宽带码分多址 (WCDMA)系统下行链路的软切换技术进行了定性分析 ,引入了新的软切换参数 :切换边际值 ,并与硬切换技术进行了比较 ,此外还对软切换宏蜂窝分集效应进行了研究 。This paper makes qualitative analysis to the performance of soft handover technology of downlink WCDMA (Wideband code division multiple access) systems, which will play an important role in the third generation mobile communication system. Taking handover margin as a criterion, it also gives a comparison between hard handover and soft handover. Moreover, the macro-diversity effect is studied in detail. At the end of this paper, some equations are derived, in which two important parameters, i.e., multipath characteristics and the user density in the cell, have close relation to the macro-diversity gain.

关 键 词：宽带码分多址 宏蜂窝分集 载波干扰比 下行链路 软切换技术 

分 类 号：TN914.53[电子电信—通信与信息系统]