【摘要】 分析了当前编码领域中低密度校验码的2种相对好的编码方法———化奇偶校验矩阵H为相似三角形和基于有限几何的编码方法。同时还分析了低密度校验码的一般及在有限几何域中的构造和特征,最后仿真了3种不同低密度校验码在相同译码方法下的性能。更多还原

【Abstract】 Two methods of encoding the LDPC codes are analyzed, which are relatively superior to those in the encoding field nowadays. One is to transform the parity matrix H into approximate lower triangulations, the other is to encode based on finite geometries. In addition, the construction and characteristics in the finite geometries field of the LDPC codes are analyzed.At last, the authors simulate the performance of three different LDPC codes with the same decoding method.更多还原