Research on low density parity check code applied in military fiber optic communication system

Li Haiyan; Zhu Min; Fan Shaoli

doi:10.13756/j.gtxyj.2011.03.010

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Research on low density parity check code applied in military fiber optic communication system

- Research on low density parity check code applied in military fiber optic communication system
- Study on Optical communication Issue 3, Pages: 14-16(2011)
- 作者机构：
  
  海军航空工程学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2011.03.010
  CLC： TN929.11
- Published：2011，
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[1]李海燕,朱敏,范绍里.LDPC码在军用光纤通信系统中的应用研究[J].光通信研究,2011(03):14-16.

Li Haiyan, Zhu Min, Fan Shaoli. Research on low density parity check code applied in military fiber optic communication system. [J]. (3):14-16(2011)
[1]李海燕,朱敏,范绍里.LDPC码在军用光纤通信系统中的应用研究[J].光通信研究,2011(03):14-16. DOI： 10.13756/j.gtxyj.2011.03.010.

Li Haiyan, Zhu Min, Fan Shaoli. Research on low density parity check code applied in military fiber optic communication system. [J]. (3):14-16(2011) DOI： 10.13756/j.gtxyj.2011.03.010.

摘要

低密度奇偶校验（LDPC）码可降低信号在光纤信道传输过程中产生的误码

可应用于对信号传输的准确性和实时性都具有特殊要求的军事光纤通信系统中。文章针对军用光纤通信系统的性能要求

分析了LDPC码的结构

使用准下三角校验矩阵方法实现LDPC码的编码

采用直线近似置信传播迭代译码（LLR-BP）算法进行译码

并在单片现场可编程门阵列（FP-GA）上实现了编译码器设计。结果表明

该设计具有较强的纠错功能

能满足军用光纤通信系统对信息传输的准确性与可靠性的高要求。

Abstract

Low Density Parity Check（LDPC） code can reduce the signal error codes produced in fiber channel transmission and it can be used in the military fiber-optic communication system that has special requirements on accuracy and real-time performance of information transmission.In view of the performance demand of usual military fiber optic communication systems

the structure of LDPC code is analyzed.The quasi-below triangle check matrix strategy is applied to realize the encoding of LDPC code and the LLR-BP arithmetic is adopted for decoding.The encoder design is implemented in a chip of Field Programmable Gate Array（FPGA）.The results indicate that the design possesses much fine error correcting performance and can meet the demand of high accuracy and reliability for information transmissions of military fiber optic communication.

关键词

低密度奇偶校验码光纤通信编码译码

Keywords

LDPC codefiber optic communicationencoderdecoder

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Related Institution

School of Electronics & Information Engineering, Nanjing University of Information Science and Technology

School of Communication and Information Engineering,Xi’an University of Posts and Telecommunications

School of Information and Communication, Guilin University of Electronic Technology

Lab.of Broadband Optical Fiber Transmission and Communication Network Technology,Ministry of Education,School of Communication and Information Engineering, University of Electronic Science and Technology of China,Chengdu

School of Communication and Information Engineering,University of Electronic Science and Technology of China

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