Interleaved Product LDPC Codes

TL;DR

This paper introduces interleaving techniques for Product LDPC codes to enhance decoding performance and reduce low weight codewords, thereby improving both waterfall and error floor regions.

Contribution

It proposes adding interleavers to Product LDPC codes to improve decoding performance and error floor characteristics, a novel approach in this context.

Findings

Improved waterfall performance with interleaving.

Reduction in low weight codewords.

Enhanced error floor behavior.

Abstract

Product LDPC codes take advantage of LDPC decoding algorithms and the high minimum distance of product codes. We propose to add suitable interleavers to improve the waterfall performance of LDPC decoding. Interleaving also reduces the number of low weight codewords, that gives a further advantage in the error floor region.