cdma2000系统中导频干扰抵消方案研究  

A Pilot Cancellation Scheme for cdma2000 Systems

作　　者：陈玉[1] 尤肖虎[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《电子学报》2003年第10期1565-1567,共3页Acta Electronica Sinica

基　　金：国家杰出青年基金项目CNSF(6972 50 0 1 );江苏东大通信技术有限责任公司 (SeuComm)资助

摘　　要：本文介绍了cdma2 0 0 0系统中计算和消除导频信号干扰的一种有效方法 ,并将其应用于单个和多个蜂窝小区的环境中 .仿真结果表明 ,采用本方法的RAKE接收机既可以保证信道估计的精度 ,合并接收到的多径信号 ;又可以有效地消除由导频信号所引入的多址干扰 ,使得系统性能得到较大程度的提高 .同时 。An effective method of calculating and eliminating the multiple access interference (MAI) introduced by the pilot signal in cdma2000 systems is presented in this paper.Its applications to single cell and multi cell environments are also described.Computer simulations show that the RAKE receiver with the proposed pilot cancellation scheme can not only ensure the accuracy of channel estimation and combine separable multi path components but also effectively eliminate the MAI due to the pilot signal.So the system performance is greatly improved.Besides,pilot cancellation at symbol rate leads to relatively low hardware complexity in its implementation for practical systems.

关 键 词：导频干扰抵消 RAKE接收机 CDMA2000 

分 类 号：TN929.533[电子电信—通信与信息系统]