基于SCG(4,k)码的构造方法提出了一种改进的新颖低密度奇偶校验(LDPC)码构造方法,该方法比改进前的SCG(4,k)码构造方法在硬件实现方面具有节省存储空间和降低计算复杂度的优点。采用该方法构造了冗余度为5.42%的LDPC(5929,5624)码,仿真分析表明,该码型比已广泛用于光通信系统中的经典RS(255,239)码具有更好的纠错性能与较低的译码复杂度。 Based on the construction method of SCG (4, k) codes, an improved construction method of new low density parity check (LDPC) codes is proposed. Compared with the former SCG (4, k) code construction method, Save storage space and reduce the computational complexity of the advantages. The LDPC (5929,5624) code with the redundancy of 5.42% is constructed by this method. The simulation results show that the code pattern has better error correction performance than the classical RS (255,239) code that has been widely used in optical communication systems With lower decoding complexity.