Raptor码在卫星通信中抗干扰性能研究  

Anti-jamming Performance in Satellite Communications Based on Raptor Codes

作　　者：刘琴涛[1] 刘宏波[2] 马俊凯[2] 

机构地区：[1]江汉大学文理学院信息技术部,武汉430056 [2]海军工程大学电子工程学院,武汉430033

出　　处：《计算机与数字工程》2013年第7期1054-1056,1064,共4页Computer & Digital Engineering

基　　金：湖北省自然科学基金重点项目:喷泉编码理论及其应用(编号:60132010)资助

摘　　要：为了提高卫星通信抗干扰性能,在对卫星通信的信道特性分析基础上,提出一种将Raptor码作为纠删码应用于卫星通信系统的方案。文中采用了LDPC码+LT码串行级联编码来实现一个码率为0.95的Raptor码,并对在载波噪声干扰信道中传输的Raptor码的译码算法进行了研究,通过系统仿真,搭建一种基于最优化度分布Raptor码的卫星通信系统模型,并对其抗干扰的性能进行分析及研究。In order to improve the anti-jamming performance of satellite communications, the Raptor codes program of erasure codes used in satellite communications systems is proposed, based on satellite communications channel characteristics analysis. In this paper, the LDPC code and LT code serial concatenated coding is used to achieve a bit rate of 0. 95 Raptor code, and the decoding algorithm of Raptor code is studied in the carrier noise interference channel, via system simulation, the satellite communication system model of the Raptor codes was set up based on optimization distribution, and analyze and study the performance of anti-jamming.

关 键 词：最优化度分布 LDPC码 QPSK 喷泉编码 

分 类 号：TN974[电子电信—信号与信息处理]