Girth-Eight Reed-Solomon Based QC-LDPC Codes

descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 Dec 2018Publisher:IEEEJournal:2018 IEEE 10th International Symposium on Turbo Codes & Iterative Information Processing (ISTC)

Authors: Xin Xiao 0001; Bane Vasic; Shu Lin 0001; Khaled A. S. Abdel-Ghaffar; William E. Ryan;

doi: 10.1109/istc.2018.8625328

Girth-Eight Reed-Solomon Based QC-LDPC Codes

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Abstract

This paper presents a class of regular quasi-cyclic (QC) LDPC codes whose Tanner graphs have girth at least eight. These codes are constructed based on the conventional parity-check matrices of Reed-Solomon (RS) codes with minimum distance 5. Masking their parity-check matrices significantly reduces the numbers of short cycles in their Tanner graphs and results in codes which perform well over the AWGN channel in both waterfall and low error-rate regions.

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