不含短环的(n,3,k)LDPC码的几何构造方法
Geometry Construction of (n,3,k) LDPC Codes without Short Cycles
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摘要: 该文基于不含短环的(n,2, k)规则低密度奇偶校验(LDPC)码，提出了一种最短环长为8的(n,3, k)规则LDPC码的几何构造方法，该方法简单直观而有效。仿真结果显示，在AWGN信道中其具有明显优于随机构造的规则LDPC码的性能。Abstract: In this paper, based on (n,2,k) regular Low Density Parity-Check (LDPC) codes without short cycles, a geometry method for the construction of(n,3,k) regular LDPC codes with 8-girth is proposed,which is simple,intuitionistic and effective. Simulation results show that these codes achieve obviously better performance than randomly constructed regular LDPC codes over AWGN channals.
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