IEEE International Symposium on Information Theory (ISIT)

Weight distributions of LDPC code ensembles: combinatorics meets statistical physics

Changyan Di, Andrea Montanari A, Rudiger L. Urbanke

Published Dec 23, 2004• 29 citations

Abstract

The exponent of the weight distribution of low-density parity-check (LDPC) code ensembles through a statistical physics method and a combinatorics method are computed in this paper. We show that the two approaches agree for regular LDPC codes. However, for irregular codes this is not necessarily the case.

DOI: 10.1109/isit.2004.1365139

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