中文摘要：

针对Turbo码对PCM／FM再入遥测系统性能的影响，在遥测信道中实现了系统的仿真。首先介绍了Turbo码的编译码原理；再详细地介绍了一种产生莱斯衰落的方法；最后将Turbo码和PCM／FM系统结合，在莱斯衰落信道上进行了仿真。仿真结果表明，在遥测信道中，基于Turbo码的PCM／FM再入遥测系统与未编码的遥测系统相比较，其编码增益达到了8dB，大大提高了其在传输条件恶劣情况下的抗误码性能。

英文摘要：

Aiming at the impact of Turbo code on the PCM/FM reentry telemetry system, the performance of the system was simulated in the telemetry channel. Firstly, the principle of Turbo encoder and decoder was introduced. Secondly, a method of generating rice fading was given in detail. Finally, the Turbo code were combined with PCM/FM system and simulated in Rice fading channel. The results show that in the telemetry channel, the PCM/FM reentry telemetry system based on Turbo codes has 8 dB coding gain compared to the non-coding telemetry system, which greatly improves the performance of anti-BER in bad transmission conditions.