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针对低密度奇偶校验(LDPC)码的相关理论和LDPC码自身特性以及光通信系统具有低噪声、高信噪比的传输特点进行分析后,提出了光通信系统中LDPC码型的构造方法,这为光通信系统中LDPC码型的构造和仿真分析奠定了基础。并对光通信系统中LDPC码的编译码算法进行了深入分析与研究,得到一些有利于降低其编译码算法复杂度的重要结论,这有助于降低其编译码器的设计与实现复杂度。
According to the theory of low density parity check (LDPC) code and its own characteristics of LDPC codes and the transmission characteristics of low noise and high signal-to-noise ratio of optical communication system, the construction method of LDPC code pattern in optical communication system is proposed. This laid the foundation for the construction and simulation analysis of LDPC code in optical communication system. The author also analyzes and studies the coding and decoding algorithms of LDPC codes in optical communication systems, and gets some important conclusions which are helpful to reduce the complexity of their coding and decoding algorithms. This helps to reduce the complexity of designing and implementing codecs.