改进的基于二维扩频的WCDMA非Rake接收机  

Improved non-Rake receiver based on two dimensional spread spectrum for WCDMA systems

作　　者：唐友喜[1] 邵士海[1] 潘文生[1] 李少谦[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都610054

出　　处：《通信学报》2005年第11期93-99,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60272009;60472045;60496313)国家"863"计划基金资助项目(2003AA12331006)教育部博士点基金资助项目(20020614001)

摘　　要：针对WCDMA发射的扩频信号,不同于传统的Rake接收算法,本文采用变换域处理技术,提出了一种充分利用多径能量的二维扩频接收技术。分析了这种充分利用多径能量的二维扩频接收机的算法复杂度。通过计算机仿真,比较了传统的Rake接收算法、充分利用多径能量的二维扩频接收算法的误码率性能。结果表明,在Rake接收机难以精确分辨信道中的每条多径的情况下,使用充分利用多径能量的二维扩频接收机具有更好的误码率性能。A direct sequence spread spectrum receiver based on two dimensional spread spectrum for WCDMA systems was proposed.Unlike the conventional Rake receiver, the proposed receiver is motivated by idea of the transform domain design and makes full use of the multipath signals. And compared with the conventional Rake receiver, the proposed receiver is presented by computer simulations to support its bit error rate （BER） performance when it is difficult for the Rake receiver to distinguish each path accurately.

关 键 词：二维扩频 WCDMA RAKE 误码率 

分 类 号：TN914[电子电信—通信与信息系统]