半导体光电, 2013, 34 (2): 273, 网络出版: 2013-05-24
应用于40Gb/s DQPSK光通信系统的LDPC译码算法研究
Decoding Algorithm of LDPC for 40Gb/s Decoding Algorithm in DQPSK Optical Communication System
前向纠错 低密度奇偶校验 置信度传播 最小和算法 光通信 DQPSK DQPSK forward error check (FEC) LDPC BP min sum(MS) algorithm optical communication
摘要
针对40Gb/s差分正交相移键控(DQPSK)光通信传输系统, 提出了低密度奇偶校验(low-density parity-check, LDPC)码译码算法的信息初始化公式, 改进了基于置信度传播 (belief propagation, BP) 的译码算法, 并进行了相应的数值仿真和性能分析比较, 得到了兼顾性能和译码复杂度的改进型译码算法。
Abstract
For 40Gb/s DQPSK optical communication transmission system, an information initial formula of decoding algorithm for low-density parity-check (LDPC) codes is proposed, and the decoding algorithm based on belief propagation (BP) is improved. Furthermore, the numerical simulation and the performance analysis and comparison are implemented. Then the advanced decoding algorithm which has a good tradeoff between performance and complexity is obtained.
康浩, 席丽霞, 张晓光. 应用于40Gb/s DQPSK光通信系统的LDPC译码算法研究[J]. 半导体光电, 2013, 34(2): 273. KANG Hao, XI Lixia, ZHANG Xiaoguang. Decoding Algorithm of LDPC for 40Gb/s Decoding Algorithm in DQPSK Optical Communication System[J]. Semiconductor Optoelectronics, 2013, 34(2): 273.