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。
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 sub-matrices, the hardware eneoder is simple. Simulations show that this type of LDPC codes has remarkable performance with low encoding complexity.
出处
《中国图象图形学报》
CSCD
北大核心
2008年第10期2027-2030,共4页
Journal of Image and Graphics
基金
国家863计划项目(2007AA01Z296)
教育部科学技术研究重点资助项目(108140)
