Fountain码编译码技术的研究  

Study on Encoding and Decoding Technologies of Fountain Codes

作　　者：冀保峰[1] 高宏峰[1] 

机构地区：[1]河南科技大学电信学院,河南洛阳471003

出　　处：《通信技术》2008年第11期66-68,共3页Communications Technology

基　　金：河南科技大学基金资助项目(2007ZY013)。

摘　　要：通过从Fountain码的其中一种LT码的度数分布入手进行分析,发现LT码易出现停止集。针对LT码的缺点分别将汉明码和RS码作为Fountain码的预编码对其进行了改进并仿真。仿真结果证明预编码可以降低停止集出现的概率。通过对Hamming-Fountain码和RS-Fountain的仿真对比表明RS-Fountain码具有更高的恢复能力。This paper analyzes the Fountain codes from the degree distribution of LT code and finds LT code for easily generating stopping sets. In the light of these disadvantages of LT code, the paper makes Hamming code and RS code the pre-coding of Fountain codes respectively. And the simulation proves that the pre-coding can reduce the probability of ocourance for stopping sets. The result comparison shows that the RS-Fountain code has higher recovery ability.

关 键 词：Fountain码 LT码 汉明码 预编码 RS码 

分 类 号：TN911[电子电信—通信与信息系统]