说明:LDPC码即低密度奇偶校验码(Low Density Parity Check Code,LDPC),它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码,不仅有逼近Shannon限的良好性能,而且译码复杂度较低, 结构灵活,是近年信道编码领域的研究热点,目前...
说明:基于密度的聚类算法,代码详细,只是不适应大数据聚类,运行速度较慢。
说明:Quasi cyclic Low parity density code. it is a very useful code. it form a martrix and then decoding by belief propagation. It is very useful
说明:This document is a CCSDS Experimental specification for a set of Low Density Parity Check (LDPC) codes. It was contributed to CCSDS by NASA. Through...