| GPON系统OLT接收侧FEC解码电路的设计 |
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| 引用本文： | 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(1). |
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| 作者姓名： | 胡睿 陈科明 马琪 庄世辉 |
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| 作者单位： | 杭州电子科技大学,微电子CAD研究所,浙江,杭州,310018 |
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| 基金项目： | 浙江省重大科技专项重点资助项目 |
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| 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.
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| 关 键 词： | 吉比特无源光网络 前向纠错 RS解码 |
Design of FEC decoder in GPON OLT receiver |
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| Hu Rui,Chen Keming,Ma Qi,Zhuang Shihui.Design of FEC decoder in GPON OLT receiver[J].Study on Optical Communications,2010(1). |
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| Authors: | Hu Rui Chen Keming Ma Qi Zhuang Shihui |
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| 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. |
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| Keywords: | GPON FEC Reed-Solomon decoding |
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