Design of Irregular Quasi-Cyclic LDPC Codes Based on Euclidean Geometries

被引：0

作者：

Jiang, Xueqin ^{[1
]}

Lee, Moon Ho ^{[1
]}

机构：

[1] Chonbuk Natl Univ, Elect & Informat Engn Dept, Chonju, South Korea

来源：

IWSDA'09: PROCEEDINGS OF THE FOURTH INTERNATIONAL WORKSHOP ON SIGNAL DESIGN AND ITS APPLICATIONS IN COMMUNICATIONS | 2009年

基金：

新加坡国家研究基金会;

关键词：

Irregular QC LDPC codes; EXIT chart; Euclidean geometry; mu-flats; parallel bundles; Galois fields; PARITY-CHECK CODES;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents an approach to the construction of low-density parity-check (LDPC) codes based on hyperplanes (mu-flats) of different dimensions in Euclidean geometries. Codes constructed by this method have quasi-cyclic and irregular structure. The degree distributions of these codes are optimized by the curve fitting approach in the extrinsic information transfer (EXIT) charts. By constraining the fraction of degree-2 nodes, we can lower the error floor at the cost of a small increase in the threshold SNR. Simulation results show that these codes perform very well at both of waterfall region and the error floor region with the iterative decoding.

引用

页码：141 / 144

页数：4

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