摘要
在研究有限几何构造方法的基础上,提出了一种大围长的多进制LDPC码的构造方法,通过对特定结构的图形进行演化,构造出满足指定条件的LDPC码。仿真结果表明,这种方法构造出的LDPC码在二进制和多进制的BP译码时均表现出了优异的性能,同时由于几何构造方法较低的编码复杂度,使得这种构造方法非常易于实现,较好的实现了编码复杂度和译码性能之间的统一。
Based on the research of finite geometries constructing method,proposed an encoding algorithm to construct non-binary LDPC codes with large girth.This method can construct designed LDPC codes with the evolution of particular graphs.The simulation results show that the LDPC codes constructed by this method have excellent performance used the binary and non-binary BP decoding algorithms.For the low complexity of constructing method by geometries,it is very easy to implement this algorithms and offer a good performance and low encoding complexity synchronously.
出处
《计算机与数字工程》
2011年第1期28-30,167,共4页
Computer & Digital Engineering
