基于RC-LDPC码的PCM/FM遥测数据传输系统设计与分析  

Design and analysis of PCM/FM telemetry data transmission system based on RC-LDPC codes

作　　者：李文雯[1] 马腾 安宁 LI Wenwen;MA Teng;AN Ning(Jiu Quan Satellite Launch Center in China, Jiu Quan 732750, China)

机构地区：[1]中国酒泉卫星发射中心

出　　处：《遥测遥控》2019年第3期63-67,共5页Journal of Telemetry,Tracking and Command

摘　　要：高效可靠的遥测数据传输对于各类飞行任务具有重要的意义。将码率兼容低密度奇偶校验码RC-LDPC(Rate-Compatible Low-Density Parity-Check Codes)应用于PCM/FM遥测数据传输系统,通过改变码率来应对时变的信道环境,充分提高无线信道的资源利用,满足遥测数据高速率数据传输需求。仿真结果表明,相较于固定码率传输系统,基于RC-LDPC码的PCM/FM遥测数据传输系统具有良好的传输性能。Telemetry data transmission with high efficiency and reliability is influential to kinds of experiments for aircrafts. In this paper, Rate-Compatible Low-Density Parity Check Codes is applied to PCM/FM telemetry communication system. This method satisfies the demands of telemetry data transformation with high efficiency and reliability, by adjusting time-varying wireless communication channel with rate compatible error correction codes and taking full advantages of wireless channel resources. Simulation results show that PCM/FM telemetry data transformation system based on RC-LDPC codes performs better than traditional communication systems with fixed code rate.

关 键 词：码率兼容 LDPC码 PCM/FM遥测数据传输系统 

分 类 号：TN911.2[电子电信—通信与信息系统]