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发明授权
CN104868926B 一种LDPC码型的构造方法及系统 失效 - 权利终止

一种LDPC码型的构造方法及系统
摘要：
本发明提供了一种LDPC码型的构造方法及系统，所述方法包括：形成M×M的第一基本矩阵A、第二基本矩阵B、第三基本矩阵C和第四基本矩阵D；根据所述矩阵A、矩阵B、矩阵C和矩阵D分别生成LDPC码的校验矩阵HLDPC矩阵的四种子矩阵HA、HB、HC和HD；形成(4×u×M)×(4×u×M)双对角方阵HP；根据HA、HB、HC、HD和HP形成目标码长为8×u×M的LDPC码的HLDPC矩阵，其中u为扩展因子，1≤u≤M。本发明所述的LDPC码型的构造方法，能够有效降低LDPC码模拟译码器的设计复杂度。
摘要（英）：

The invention provides a construction method and system for a low density parity check (LDPC) code pattern. The method comprises the steps of forming a first basic matrix A, a second basic matrix B, a third basic matrix C and a fourth basic matrix D of M*M; according to the matrix A, matrix B, matrix C and matrix D, respectively generating four sub-matrixes H, H, H and H of a check matrix-H matrix of an LDPC code; forming a (4*u*M)*(4*u*M) double diagonal matrix H

; and according to H, H, H, H and H

, forming the H matrix of the LDPC code with a target code length of 8*u*M, wherein u is a stretch factor, and u is greater than or equal to 1 and less than or equal to M. Through adoption of the construction method for the LDPC code pattern, the design complexity of an LDPC code analog decoder can be effectively lowered.

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