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电子学报 2000

WCDMA下行信道RAKE接收机的性能分析

杨馨,赵新胜,尤肖虎

Keywords: 第三代移动通信,WCDMA,RAKE接收机,信道估计,导频

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Abstract:

在第三代移动通信WCDMA的最新通信标准[1]中,下行信道在保留时分复用导频符号的同时,新增了公共导频信道.本文针对WCDMA这一最新改变,给出了利用公共导频信道进行信道估计,实现相干RAKE接收的模型算法、性能分析及仿真结果.仿真表明,利用公共导频信道的RAKE接收机性能明显优于时分插入导频符号辅助的RAKE接收机的性能,尤其在高速及变速运动情况下,而且具有信道估计算法简单、信道跟踪实时性强的特点.

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