Applications of Luby Transform Codes in Free Space Optical Communications

HAO Yuan; WU Yi; LIU Li-yuan; LIU Hong-zhan

doi:10.13756/j.gtxyj.2020.04.002

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Applications of Luby Transform Codes in Free Space Optical Communications

- Applications of Luby Transform Codes in Free Space Optical Communications
- Study on Optical communication Issue 4, Pages: 6-11(2020)
- 作者机构：
  
  华南师范大学信息光电子科技学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2020.04.002
  CLC： TN929.1
- Published：2020，
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[1]郝源,吴一,刘丽媛,刘宏展.卢比变换码在自由空间光通信中的应用[J].光通信研究,2020(04):6-11.

HAO Yuan, WU Yi, LIU Li-yuan, et al. Applications of Luby Transform Codes in Free Space Optical Communications. [J]. (4):6-11(2020)
[1]郝源,吴一,刘丽媛,刘宏展.卢比变换码在自由空间光通信中的应用[J].光通信研究,2020(04):6-11. DOI： 10.13756/j.gtxyj.2020.04.002.

HAO Yuan, WU Yi, LIU Li-yuan, et al. Applications of Luby Transform Codes in Free Space Optical Communications. [J]. (4):6-11(2020) DOI： 10.13756/j.gtxyj.2020.04.002.

摘要

卢比变换（LT）码是第一种具有实用价值的数字喷泉码。LT码在噪声信道中具有良好的性能

且已在自由空间光通信（FSO）中广泛应用。文章首先简要说明了LT码的基本原理

列举了LT码与其他几种FSO中常用的编码方案的优缺点。然后

概括了国内外对LT码在FSO系统中应用的研究进展

并从新型度分布和改进的译码方案两个角度详细介绍了LT码在FSO系统中应用的性能优化方案。最后

指出了现有LT码相关研究的不完善之处

对LT码在FSO中的未来研究方向提出了展望。

Abstract

The Luby Transform（LT）codes is the first digital fountain codes that has practical values. LT codes can demonstrate excellent performance in noisy channels

and it has been widely applied in Free Space Optical Communications（FSO）. In this article

the basic principle of LT codes is introduced

and the advantages and disadvantages of LT codes and other common encoding schemes for FSO are listed. Besides that

the progress of both domestic and foreign researches on the applications of LT codes in FSO systems is summarized. Then

the strategies for enhancing the performance of LT codes in FSO systems are elaborately described in two aspects

i.e.

novel degree distributions and improved decoding schemes. Finally

the incompletions of the existing researches on LT codes are indicated

and some directions of further researches on LT codes in FSO are depicted.

关键词

卢比变换码数字喷泉码自由空间光通信度分布译码方案

Keywords

LT codesdigital fountain codesFSOdegree distributiondecoding scheme

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Decomposition and Restructuring Encoding Algorithm for LT Codes

Statistical Model of Digital Coherent Combining Efficiency in Multi-aperture Receivers

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Key Laboratory of Optical Fiber Communication and Network Technology,Chongqing University of Posts and Telecommunications

School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications

Chongqing University of Posts and Telecommunications

重庆邮电学院重庆　400065

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