纠错编码对OCDMA系统性能的影响  

Effect of Error Correction Coding on OCDMA System

作　　者：房杰[1] 张琦[1] 余重秀[1] 忻向军[1] 尹霄丽[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《半导体光电》2009年第5期742-744,共3页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(60577045);教育部新世纪优秀人才支持计划;教育部留学归国人员教学;科研经费建设资助项目

摘　　要：提出了基于RS码(Reed-Solomon Code)的光码分多址(OCDMA)系统的前向纠错编码方案,仿真分析了该方案对一维、二维OCDMA系统的纠错能力。研究结果表明:对于相同码长、相同码重光地址码的OCDMA系统,采用前向纠错(FEC)技术能够有效降低系统误码率,提高系统容量,改善系统性能。对于来自同一码族的OCDMA系统,随码重增加,系统性能改善越好。A novel forward error-correct （FEC） scheme based on Reed-Solomon code （RS code） is proposed for optical code division multiple access （OCDMA） systems. The error-correcting ability of the presented FEC scheme for one-dimension and two-dimension OCDMA systems are simulated and analyzed. Researched results show that the bit error rate （BER） of OCDMA system using FEC technology is better than that withoutwit using FEC technology at the condition of same code length and code weight. And the capacity is also largely enhanced due to the application Of FEC technology. Moreover, for the address code of OCDMA system coming from the same code family, the BER is improved with the increase of the code weight.

关 键 词：前向纠错 光码分多址 RS码 多址干扰 误码率 

分 类 号：TN929.11[电子电信—通信与信息系统]