利用CDMA系统下行链路信号进行移动台定位的研究  

Using downlink signal to locate mobile station in CDMA systems

作　　者：华云[1] 龚耀寰[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电波科学学报》2002年第5期517-523,共7页Chinese Journal of Radio Science

摘　　要：深入分析了在CDMA系统中利用下行链路信号进行移动台定位存在的问题 ,提出使用干扰抑制的方法来抑制服务基站信号 ,提高定位精度的策略 ,详细叙述了算法流程并给出了仿真结果。结果表明 ,利用干扰抑制算法可以大幅度提高定位精度。In this paper we have analyzed problems existing in mobile station location when using downlink signal in CDMA system. Bring forward a new algorithm to cancel serving base station signals, and improving location precision.The algorithm has been described in detail and computer simulation result has been presented.The result indicate that the interfere canceling algorithm can suppress location error very deeply.

关 键 词：移动台定位 CDMA 下行链路 导频信号 TDOA TOA 

分 类 号：TN929.533[电子电信—通信与信息系统]