A Joint Optimization Technique for Multi-Edge Type LDPC Codes
Information Theory
2016-05-17 v1 math.IT
Abstract
This paper considers the optimization of multi-edge type low-density parity-check (METLDPC) codes to maximize the decoding threshold. We propose an algorithm to jointly optimize the node degree distribution and the multi-edge structure of MET-LDPC codes for given values of the maximum number of edge-types and maximum node degrees. This joint optimization is particularly important for MET-LDPC codes as it is not clear a priori which structures will be good. Using several examples, we demonstrate that the MET-LDPC codes designed by the proposed joint optimization algorithm exhibit improved decoding thresholds compared to previously reported MET-LDPC codes.
Cite
@article{arxiv.1605.04664,
title = {A Joint Optimization Technique for Multi-Edge Type LDPC Codes},
author = {Sachini Jayasooriya and Mahyar Shirvanimoghaddam and Lawrence Ong and Sarah J. Johnson},
journal= {arXiv preprint arXiv:1605.04664},
year = {2016}
}