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Journal of Electronics (China)

Design of Quasi-Cyclic LDPC codes based on Euclidean Geometries

Yuanhua Liu, Xinliang Niu, Xinmei Wang, Jiulun Fan

Published May 1, 2010• 1 citation
Publisher
DOI
10.1007/s11767-010-0348-0

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This paper presents an improved Euclidean geometry (EG) method for constructing parity check matrix of quasi-cyclic low-density parity-check (QC-LDPC) codes to decrease the performance degradation of short cycles to the iterative decoding. The new method results in a class of QC-LDPC codes with much fewer short cycles than usual EG-LDPC codes with the same parameters. Simulation results show that the designed QC-LDPC codes with fewer short cycles perform better than the existing Euclidean geometry LDPC codes under iterative decoding.