扩谱系统信道估计优化

Optimize Channel Estimation for Spread Spectrum System

本文提出一种易于集成实现的扩谱系统优化接收机信道估计方案,并以WCDMA系统下行链路为例进行了详细的理论推导与分析。给出了其在移动信道环境下的仿真结果。结果表明,改进方案与理想性能仅差约零点几分贝,比一般情形改进至少2dB。

An optimized channel estimation scheme, which could be easily implemented in 1C, is proposed in this paper. Elaborate theoretical analysis concerning the principle downlink of WCDMA physical layer is given. Results of computer simulation for frequency-selective fading channel show that using our optimized channel estimation scheme, at least 2dB improvement can be achieved.