Design of FEC decoder in GPON OLT receiver

Hu Rui; Chen Keming; Ma Qi; Zhuang Shihui

doi:10.13756/j.gtxyj.2010.01.016

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Design of FEC decoder in GPON OLT receiver

- Design of FEC decoder in GPON OLT receiver
- Study on Optical communication Issue 1, Pages: 24-27(2010)
- 作者机构：
  
  杭州电子科技大学微电子CAD研究所
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2010.01.016
  CLC： TN929.1
- Published：2010，
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[1]胡睿,陈科明,马琪,庄世辉.GPON系统OLT接收侧FEC解码电路的设计[J].光通信研究,2010(01):24-27.

Hu Rui, Chen Keming, Ma Qi, et al. Design of FEC decoder in GPON OLT receiver. [J]. (1):24-27(2010)
[1]胡睿,陈科明,马琪,庄世辉.GPON系统OLT接收侧FEC解码电路的设计[J].光通信研究,2010(01):24-27. DOI： 10.13756/j.gtxyj.2010.01.016.

Hu Rui, Chen Keming, Ma Qi, et al. Design of FEC decoder in GPON OLT receiver. [J]. (1):24-27(2010) DOI： 10.13756/j.gtxyj.2010.01.016.

摘要

前向纠错（FEC）在通信系统中有着广泛的应用。在吉比特无源光网络（GPON）系统中

上行带宽是以动态方式进行分配的

光线路终端（OLT）接收侧要求能够支持RS（255

239）及其缩短码的解码。文章采用一种"变换时钟域+RS全码解码"的方法

通过基于双端口随机存储器（DPRAM）的时钟域变换后

再进行RS全码解码。采用这种方式能够以较低的硬件复杂度完成FEC解码。

Abstract

Forward Error Correction（FEC） is widely used in communication systems.In the Gigabit Passive Optical Networks（GPON）

the transmit bandwidth of ONUs is dynamically allocated

so OLT receiver should be able to decode RS（255

239） and its shortened codewords.This paper introduces a new scheme of RS decoder

which transfers data from its original low clock domain to a high one

and finally decodes the data stream with its mother code.It can complete FEC decoding in low hardware complexity.

关键词

吉比特无源光网络前向纠错RS解码

Keywords

GPONFECReed-Solomon decoding

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Chongqing CYIT Communication Technologies Co.,Ltd.,CUPT

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Wuhan Research Institute of Post & Telecommunications

State Key Laboratory of Optical Communication Technologies and Networks

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