WCDMA下行链路信道估计算法的性能分析及比较

Performance Analysis and Comparison of Channel Estimation Algorithms for Downlink in WCDMA Systems

在WCDMA/FDD第三代移动通信系统中,下行链路的信道估计有基于公共导频信道(CPICH)和基于时分复用导频符号两种方式。本文就分别基于这两种方式的信道估计算法进行了性能的分析和比较,并给出实现模型及仿真结果。

In WCDMA/FDD (Wideband Code Division Multiple Access Frequency Division Duplexing), proposed for the third generation mobile communication systems, downlink channel estimation can be performed by using code multiplexed CPICH (common pilot channel) and time multiplexed pilot symbols. In this paper, Performance analysis and comparison of the channel estimation methods based on CPICH and time multiplexed pilot symbols respectively are made from the computer simulation results.