深空通信新型信道编码技术研究  

Research on Novel Channel Encoding Techniques Applied in Deep Space Communications

作　　者：何善宝[1] 刘崇华[1] 刘凤晶[1] 许恩杨[2] 

机构地区：[1]中国空间技术研究院总体部,北京100094 [2]东南大学无线电工程系,南京210018

出　　处：《遥测遥控》2009年第4期11-14,44,共5页Journal of Telemetry,Tracking and Command

摘　　要：在深空探测领域,超远距离通信是一个关键难题,采用先进的纠错编码技术是解决该难题的重要方法。在重复累积码研究的基础上,通过采用不同的累加次数和增加交织等手段,两种重复新交织累加RNIA码得以构造。RNIA码可以用原型图表示。采用BP算法对两种RNIA码进行译码仿真,结果表明RNIA码拥有比DVB-S2标准中LDPC码更优异的性能。RNIA码因具有低复杂度的编译码结构及优异的译码性能,在深空探测领域将有强劲的竞争实力与广阔的应用前景。A key difficulty of deep space exploration is the communication under ultra long distance.This problem can be resolved or alleviated by adopting advanced error correcting codes.Based on the study of Repeat-Accumulate codes,two types of Repeat New Interleave Accumulate(RNIA)codes are constructed by means of changing the times of accumulation and adding interweaving modules.RNIA codes can be described by protographs.The Belief Propagation(BP)algorithm is used to decode these codes and decoding results show that RNIA codes surpass LDPC codes of DVB-S2.The RNIA codes own superiority and good market in the filed of exploration because of perfect performance and low complexity.

关 键 词：深空探测 LDPC码 AR4A码 ARAA码 信道编码 

分 类 号：TN911.22[电子电信—通信与信息系统]