WCDMA系统上行链路阵列接收及自适应并行干扰对消技术  

Array Processing and Adaptive PIC Technology for Uplink of WCDMA System

作　　者：张华[1] 龚耀寰[1] 李会勇[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：《电子学报》2001年第12期1589-1592,共4页Acta Electronica Sinica

基　　金：国防科技预研基金(2000J713DZ0207);国防科技重点实验室基金(2000JS0441DZ02)

摘　　要：本文提出了一种适于WCDMA系统上行链路阵列接收加PIC的联合处理方案 .首先针对WCMA系统上行链路帧结构的特征 ,将Z .Rong等中提出的LS DRMTA改进为导频位辅助LMS DRMTA算法 .这种新的阵列接收CD MA解调算法相对于LS DRMTA算法大大降低了基站处理的运算量 ,提高了算法的实用性 ,仿真实验还表明该算法比原算法具有更低的误码率 .然后在阵列处理之后加上PIC ,可以进一步消除CCI,降低系统误码率 .这种阵列接收加PIC方案具有运算量小 ,延时小 。A combined scheme of smart antenna and PIC with low complexity is proposed for the uplink receiving of WCDMA system. At first we develop the LS-DRMTA algorithm proposed by Z.Rong into a new algorithm named pilot bit assisted LMS-DRMTA in accordance with the uplink frame structure of WCDMA system. The proposed algorithm cuts down lots of computation complexity of LS-DRMTA algorithm, which simplifies its application in WCDMA system. Further more, the simulation experiments indicate that the new algorithm can perform at much lower BER than LS-DRMTA. After the array processing of the received signal by the proposed algorithm, we go further to cancel the CCI by adaptive PIC which is a useful method for MUD. The overall scheme proposed is characterized by low computation complexity, little delay and easy real time implementation.

关 键 词：WCDMA 上行链路 帧结构 智能天线 自适应并行干扰对消 移动通信 

分 类 号：TN929.533[电子电信—通信与信息系统]