A Joint Optimization Technique for Multi-Edge Type LDPC Codes

Sachini Jayasooriya; Mahyar Shirvanimoghaddam; Lawrence Ong; Sarah J. Johnson

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arXiv · 1605.04664

A Joint Optimization Technique for Multi-Edge Type LDPC Codes

Sachini Jayasooriya·Mahyar Shirvanimoghaddam·Lawrence Ong·Sarah J. Johnson

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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.

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BibTeX RIS

Sachini Jayasooriya, Mahyar Shirvanimoghaddam, Lawrence Ong, Sarah J. Johnson. 2016-05-16. A Joint Optimization Technique for Multi-Edge Type LDPC Codes. https://arxiv.org/abs/1605.04664

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