多元LDPC码串行译码算法在光纤通信中的应用

Application of nonbinary LDPC codes about serial decoding algorithm in optical fiber communication

将串行BP译码算法用在多元LDPC码中,降低了在光纤传输系统中的译码延时。详细介绍了在多元LDPC码中的串行BP译码算法和光纤通信系统的仿真模型。给出了在采用串行BP算法的LDPC译码器中,译码最大迭代数量对译码性能的影响,比较了采用传统的BP算法和串行BP算法时LDPC译码器的性能。结果表明,采用串行BP算法确实能够提升LDPC译码器的收敛速度。

This paper use serial BP decoding algorithm to decode nonbinary LDPC codes in order to reduce decoding latency in optical fiber communication system.Then we introduce the serial BP decoding algorithm for nonbinary LDPC codes and the simulation model of optical communication system in detail.After that we show the performance effect of the maximum iterations of serial BP decoding algorithm in LDPC decoder and compare the performance of the decoder with traditional BP decoding algorithm and serial BP decoding algorithm.The result indicates that serial BP decoding algorithm can really increase the convergence speed of LDPC decoder.