Fountain码编译码算法结构的改进  

Structure Improvement of Encoding and Decoding Algorithms for Fountain Codes

作　　者：冀保峰[1] 高宏峰[1] 张冀[1] 

机构地区：[1]河南科技大学电信学院,河南洛阳471003

出　　处：《电讯技术》2008年第7期10-13,共4页Telecommunication Engineering

基　　金：河南科技大学基金资助项目(2007ZY013)

摘　　要：在LT码的基础上对Raptor码进行了分析。根据IRA码的结构及其线性时间的编译码特性,提出了Raptor码和IRA码相结合的改进Fountain码结构。研究结果表明,该结构既保持了线性的编译码特性又能有效增强信元的恢复能力。利用其它编码技术与Raptor码相结合是今后进一步的研究方向。The Raptor codes are analysed on the basis of LT codes. According to the advantages of linear encoding and decoding property of irregular repeat accumulate （IRA） codes, a new structure of Fountain codes combining the Raptor codes with IRA codes are proposed. This structure not only retains the original performance but also can efficiently improve the recovery ability of the data unit. Using other technology together with Raptor codes is the main research direction.

关 键 词：Fountain码 预编码 不规则重复累积码 数据传输 可靠性 

分 类 号：TN911.21[电子电信—通信与信息系统]