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发明授权
CN1983823B 编码器、解码器、以及编码和解码的方法 失效 - 权利终止

编码器、解码器、以及编码和解码的方法
摘要：
编码器、解码器、以及编码和解码的方法。使用低密度奇偶校验码将码长度为N的信息序列编码为码序列，其中N＝K+M，K是信息长度，M是奇偶长度。该低密度奇偶校验码是基于M行N列的矩阵H生成的。矩阵H包括校验矩阵H2和校验矩阵H1。校验矩阵H2有M行M列，其为循环置换矩阵，校验矩阵H2存在逆矩阵并且其列权为3。校验矩阵H1有M行K列。
摘要（英）：

A coder, a decoder and methods for coding and decoding are provided. An information sequence having a code length of N (N=K+M), where K is information length and M is parity length, is encoded into acode sequence by using an LDPC code. The LDPC code is generated based on a matrix H, with M rows and N columns. The matrix H includes a check matrix H2 and a check matrix H1. The check matrix H2 has Mrows and M columns, it is a cyclic permutation matrix, and an inverse matrix exists for the check matrix H2, and its column weight is 3. The check matrix H1 has M rows and K columns.

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