The Improved Degree Distribution for Rateless Code Under Partial Information

NIU Fang-lin; LI Bao-ming; CHEN Fu-liang; WANG Hong-yu; ZHU Kai-yan

doi:10.3969/j.issn.0372-2112.2016.02.008

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The Improved Degree Distribution for Rateless Code Under Partial Information

更新时间：2025-07-16

- The Improved Degree Distribution for Rateless Code Under Partial Information
- Acta Electronica Sinica Vol. 44, Issue 2, Pages: 295-300(2016)
- 作者机构：
  
  1. 辽宁工业大学电子与信息学院,辽宁,锦州,121001
  2. 大连理工大学信息与通信工程学院,辽宁,大连,116024
  3. 航天恒星科技有限公司,北京,100086
  4. 大连海洋大学信息工程学院,辽宁,大连,116023
  5. 辽宁工业大学电子与信息学院,辽宁,锦州,121001
  6. 大连理工大学信息与通信工程学院,辽宁,大连,116024
  7. 航天恒星科技有限公司,北京,100086
  8. 大连海洋大学信息工程学院,辽宁,大连,116023
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61172058);Jinzhou Science Project (No.12BID13)
- DOI：10.3969/j.issn.0372-2112.2016.02.008
  CLC： TN911.23
- Published Online：25 February 2016，
  
  Published：2016
- 稿件说明：
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NIU Fang-lin, LI Bao-ming, CHEN Fu-liang, et al. The Improved Degree Distribution for Rateless Code Under Partial Information[J]. Acta Electronica Sinica, 2016, 44(2): 295-300.
DOI：

NIU Fang-lin, LI Bao-ming, CHEN Fu-liang, et al. The Improved Degree Distribution for Rateless Code Under Partial Information[J]. Acta Electronica Sinica, 2016, 44(2): 295-300. DOI： 10.3969/j.issn.0372-2112.2016.02.008.

摘要

与传统的喷泉码相比

基于反馈信息的喷泉码可以有效降低译码开销

其编码所采用度分布则是喷泉码设计的关键

本文提出一种适用于反馈喷泉码的基于部分信息度分布构造方法.该方法首先提出具有较小译码开销的最佳单项式度分布函数

并将其与传统的SRSD度分布相结合

然后通过参数调整可以获得修正后的ISRSD度分布函数.仿真结果表明在已知部分信息的喷泉码中

与传统的SRSD度分布函数相比

采用ISRSD度分布函数进行编码使其性能得到明显的提高.

Abstract

Compared with traditional fountain codes

fountain codes with feedbacks can decrease the decoding overhead effectively.The degree distribution has a very important influence on the decoding efficiency of fountain codes.This paper proposes a new scheme of degree distribution under partial information and we use it in fountain codes with feedback.In the first place

we present an optimum monomial degree distribution with less decoding overhead

and then we combine it with shifted robust soliton distribution (SRSD).At last

we get the improved SRSD (ISRSD) through parameter adjustment.Simulations verify the encoding performance of fountain codes under parity information using ISRSD is greatly improved compared with traditional SRSD.

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