RS码在25G-EPON系统中的性能研究

量子电子学报 ›› 2020, Vol. 37 ›› Issue (2): 242-249.

RS码在25G-EPON系统中的性能研究

张新1，车昱昕1*，刘毓2，王素椅3，董昊宸1

1西安邮电大学电子工程学院，陕西西安 710121； 2西安邮电大学通信与信息工程学院，陕西西安 710121； 3烽火通信科技股份有限公司，湖北武汉 430074

收稿日期:2019-10-10 修回日期:2019-11-15 出版日期:2020-03-28 发布日期:2020-03-28
通讯作者: 车昱昕 E-mail:cheyuxin0202@163.com
作者简介:张新（1968—），女，陕西西安人，博士，教授，主要从事现代通信网、宽带无线通信等方面的研究。 E-mail：zhx@xupt.edu.cn
基金资助:
Supported by Key Research and Development Project of Ministry of Science and Technology in 2018 (2018年科技部重点研发项目，2018YFB2201305)

Performance Analysis of Reed-Solomon Code in 25G-EPON System

ZHANG Xin1，CHE Yuxin1*，LIU Yu2，WANG Suyi3，DONG Haochen1

1 School of Electronic Engineering, Xi’an University of Post and Telecommunications, Xi’an 710121, China; 2 School of Communication and Information Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710121, China; 3 Fiberhome Communication Technology Company Ltd, Wuhan 430074,China

Received:2019-10-10 Revised:2019-11-15 Published:2020-03-28 Online:2020-03-28

摘要/Abstract

摘要： 前向纠错技术是保证25G-EPON系统数据传输可靠性的关键技术。针对25G-EPON系统由于高传输速率导致数据在传送过程中出现更多随机错误和长连续突发错误的问题，通过分析RS编译码算法，选择合适的RS码特征参数，仿真分析了这些参数对25 G-EPON系统传输性能的影响，确定适用于25G-EPON通信系统的RS码方案。实验结果表明，在满足25G-EPON系统可靠性的前提下，应尽可能降低编码效率、提高编码的冗余度、采用码长较短的编码方案，以提高RS码的编码增益、降低信息传输的误码率。RS(1023,847)码能纠正最多连续880比特错误，在误码率达到10-12时的编码增益可以达到8.834 dB，可以满足25G-EPON系统传输需求，因此选用RS(1023,847)码作为25G-EPON系统的前向纠错码。

关键词: 光通信, 前向纠错, RS码, 25G-EPON, 特征参数, 编码增益

Abstract: Forward error correction is the key technology to ensure the reliability of data transmission in 25G-EPON system. For 25G-EPON system, random errors and continuous burst errors often occur in the process of data transmission due to the high transmission. By analyzing the RS coding and decoding algorithm and selecting the appropriate RS characteristic parameters, the influence of these parameters on the transmission performance of 25G-EPON system is simulated and analyzed. Thenthe appropriate RS code scheme is chosen for 25G-EPON communication systems. The experimental results show that under the premise of satisfying the reliability of the 25G-EPON system, the coding efficiency should be reduced as much as possible, the redundancy of coding should be improved and the coding scheme with shorter code length should be adopted, so as to improve the coding gain of the RS code and reduce the bit error rate of information transmission. It is shown that RS (1023,847) code can correct up to 880 consecutive bit errors, and the coding gain can reach 8.834 dB when the symbol error rate reaches 10-12, which can meet the transmission requirements of 25G-EPON system. Therefore, RS(1023,847) code is selected as the forward error correction code of 25G-EPON system.

Key words: optical communication, forward error correction, Reed-Solomon codes, 25G-EPON, characteristic parameters, coding gain

中图分类号:

TN911.22

张新, 车昱昕, 刘毓, 王素椅, 董昊宸. RS码在25G-EPON系统中的性能研究[J]. 量子电子学报, 2020, 37(2): 242-249.

ZHANG Xin, CHE Yuxin, LIU Yu, WANG Suyi, DONG Haochen. Performance Analysis of Reed-Solomon Code in 25G-EPON System[J]. Chinese Journal of Quantum Electronics, 2020, 37(2): 242-249.

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