摘要
介绍了FEC(前向纠错)技术在PON(无源光网络)中的应用方式,分析了高速PON对FEC的要求,研究了适用于高速PON的FEC码型。通过分析常用RS和BCH等单码的误码率、码长和冗余度等性能,提出了适用于高速PON的FEC方案,并对实现原理和硬件复杂度进行了分析,用Verilog语言实现了该方案。仿真和分析结果表明,采用RS(255,223)码可以满足高速PON的应用需求,对其关键电路采用并行处理的方法完全可以实现10 Gbit/s的速率。
In this paper application of Forward Error Correction （ FEC ） in Passive Optical Network （PON） is introduced, then requirements to FEC in high speed PON are analyzed and the FEC codes suitable for high speed PON are studied. A FEC scheme suitable for high speed PON is presented via analysis of the BER, codeword length and redundancy of FEC codes. Then the principle of implementation and hardware complexity are analyzed. Finally the scheme is realized using Verilog that RS（255,223） is able to fulfill application demand of key circuit can realize the speed of 10 Gbit/s.
出处
《电子工程师》
2008年第10期12-16,44,共6页
Electronic Engineer
关键词
PON
前向纠错
RS
BCH
PON
FEC
RS
BCH language The simulation and analysis results show high speed PON and the parallel processing of the
