中文摘要：

研究了基于WSSUS模型的UHF频段卫星移动信道模型，利用该模型在四种典型的信道环境下进行相干RAKE接收，在搭建的RAKE接收仿真平台上，比较了三种不同RAKE合并方式下的误码率性能。仿真结果表明，公共导频符号信道估计能有效地克服传统数据符号中时分插入导频符号传输方式在高速运动和快速变化信道中估计不准确的问题，特别在机载信道环境下，接收机性能有明显提高，同时不会产生多余的时隙延迟，信道跟踪实时性强，算法简单。

英文摘要：

The satellite mobile channel model in UHF based on WSSUS is researched, and coherent RAKE receiving is carried out in four typical scenes. The performance of BER is compared in three different combining methods on RAKE simulation platform established. The simulation results show that channel estimation using common pilot symbols efficiently overcomes estimation inaccuracy on fast time-varying and high speed mobile channel compared with time-multiplexed pilot symbol aided style. Especially on airborne scene, the performance of RAKE receiver has improved obviously, and this new method has less computational complexity in algorithm and less slot delay, what＇s more, the ability of real-time channel tracking is impressive .