前向纠错
计算机科学
突发模式(计算)
现场可编程门阵列
错误检测和纠正
误差分析
实时计算
电子工程
计算机硬件
解码方法
算法
工程类
数学
操作系统
应用数学
作者
Nicola Brandonisio,Stefano Porto,Daniel Carey,Peter Ossieur,Giuseppe Talli,Nick Parsons,P.D. Townsend
出处
期刊:Journal of Optical Communications and Networking
[The Optical Society]
日期:2018-03-07
卷期号:10 (4): 298-298
被引量:6
标识
DOI:10.1364/jocn.10.000298
摘要
Forward error correction (FEC) based on Reed–Solomon coding for the burst-mode upstream traffic of passive optical networks (PONs) is analyzed in detail using flexible field-programmable gate arrays (FPGAs). In order to achieve true burst-mode transmission using FPGAs, specific architectural solutions are required. In particular, a burst-mode frame synchronizer and a burst-mode Reed–Solomon decoder are described in detail and analyzed experimentally within a state-of-the-art long-reach PON test-bed. During this analysis, the upstream FEC performance is impaired by introducing strongly correlated and localized errors within the burst through the reduction of the burst preamble duration. The observed FEC degradation is exhaustively analyzed by implementing on the FPGAs a tool for error location analysis and frame loss measurements. This investigation demonstrates the importance of understanding the error distribution within the burst in order to correctly estimate the FEC performance in PON upstream links.
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