Optoelectronics Letters

A novel decoding algorithm based on the hierarchical reli- able strategy for SCG-LDPC codes in optical communi- cations

袁建国, Qing-zhen Tong, 黄胜, 王永

Published Jan 1, 2013• 0 citations

Abstract

译码算法的有效层次可靠信仰繁殖(HRBP ) 根据低密度的同等值检查(SCG-LDPC ) 编码的系统地构造的 Gallager 的结构的特征被建议。新奇译码算法联合有可靠性判断的分层的重复，和罐头极大地减少涉及随后的重复进程的可变节点的数字并且加速集中率。为 SCG-LDPC (3969,3720 ) 代码的模拟的结果证明极大地译码算法罐头的新奇 HRBP 以与传统的信仰繁殖(BP ) 相比保证性能的条件减少计算数量算法。 HRBP 算法的小点错误率( BER )在 15 的阀值价值是可观的，但是在随后的重复处理，为 HRBP 算法的可变节点的数字能被大约70%与 BP 算法相比在高 signal-to-noise 比率( SNR )减少。当阀值值进一步被增加时， HRBP 算法将逐渐地堕落进 layered-BP 算法，但是 30 在 107 的 BER 和最大的重复数，编码 HRBP 算法的获得( NCG )的网络是多于 BP 算法的 0.2 dB ，并且平均重复时间能被大约40%在高 SNR 减少。因此，译码算法的新奇 HRBP 对光通讯系统更合适。

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