摘要
基于级联码对光通信系统中级联码特性和ITU-T G.975.1中两种超强前向纠错(SFEC)码型进行分析和研究后,提出了一种新颖的RS(255,239)+BCH(1023,963)级联码型。仿真表明,该码型与ITU-T G.975.1中RS(255,239)+CSOC(k0/n0=6/7,J=8)码相比较,具有更低的冗余度和更好的纠错性能,并且在经过三次迭代且误码率(BER)为10-12时其净编码增益(NCG)比ITU-T G.975.1中RS(255,239)+CSOC(k0/n0=6/7,J=8)码和BCH(3860,3824)+BCH(2040,1930)码要分别大0.60dB和0.57dB。因而,它更适用于超长距离、超大容量和超高速的光通信系统中,并可以作为SFEC码的一种候选码型。
A novel concatenated code type of RS(255, 239)+BCH(1023, 963) is proposed after analyzing and studying the characteristics of the concatenated code for optical communication systems and the two Super Forward Error Correction(SFEC) code types in ITU-T G.975.1. The simulation results show that this novel code type, compared with the RS(255, 239)+ CSOC(k0/n0=6/7, J=8) code in ITU-T G.975.1, has a lower redundancy and the better error-correction performance, furthermore, its net coding gain(NCG) is respectively 0.60dB and 0,57dB more than that of RS(255,239)+ CSOC(k0/n0=6/7, d=8) code and BCH(3860, 3824)+BCH(2040, 1930) code in ITU-T G975.1 at the third iteration for the bit error rate (BER) of 10^-12. Therefore, the novel concatenated code type can be better used in ultra long-haul, ultra large-capacity and ultra high-speed optical communication systems. Furthermore, it can be regarded as a candidate code type of the SFEC codes.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第4期89-93,共5页
Opto-Electronic Engineering
基金
国家863高技术发展计划重大专项基金资助项目
重庆邮电大学自然科学基金资助项目(A2006-53)