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一种低密度奇偶校验码的几何构造方法
摘 要
提出了一种新的QC LDPC码的几何构造法，通过该方法构造出来的码字，其校验矩阵的最小环长为8，有效地保证了码字性能。由于校验矩阵是由一系列循环子矩阵组成的，编码器的硬件结构简单。通过仿真结果表明，这种码字在具有较低的编码复杂度的同时，拥有良好的译码性能。
关键词
A Method for Geometric Construction of Low density Parity check Codes
() Abstract
A new method for geometric construction of QC LDPC is proposed. The parity check matrix constructed through this method has a girth more than eight, which promises good performance. Since the parity check matrix is composed of cyclic submatrices, the hardware encoder is simple. Simulations show that this type of LDPC codes has remarkable performance with low encoding complexity.
Keywords
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