【摘要】 光通信技术向着长距离、高速度的方向发展,具有更加强大纠错能力的EFEC算法正逐渐成为人们研究的热点。本文结合BCH码的特点,对EFEC算法I.7中描述的正交级联的BCH码的帧结构进行了研究,通过MATLAB编程实现了BCH码的编码以及基于BM算法的迭代译码,并分析了不同结构的BCH码的误码性能。实验结果表明:在相同的误码信道中,I.7中介绍的基于正交级联的BCH码的帧结构相比普通的BCH码具有更加优秀的纠错能力。分析结果对进一步研究通信可靠性具有一定的参考价值。更多还原

【Abstract】 The optical communication technology was developed to long-distance and high speed.The EFEC algorithm with more powerful error correction capability has been becoming a focus for researchers.In this paper,combined with the characteristics of BCH codes,the frame structure of orthogonal concatenated BCH code described in I.7 EFEC algorithm was researched and implemented the BCH encoding and iteratively decoding based on BM algorithm through the MATLAB programming was the BER performance of different structures of BCH codes was analyzed.The results showed that: with the same error channel,the frame structure,that based on the orthogonal concatenated BCH code had more excellent error correction capability compared with ordinary BCH codes.The results has some reference value to improve communication reliability for the further research and designing.更多还原