Title :
Design of non-binary quasi-cyclic LDPC codes by absorbing set removal
Author :
Amiri, B. ; Flores Castro, J.A. ; Dolecek, L.
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
Non-binary quasi-cyclic (NB-QC) codes are a class of graph-based codes with high performance and implementation-friendly structure. In this paper, we introduce a new method for designing NB-QC codes with improved performance in the low error-rate region. Specifically, we propose a construction which reduces the number of non-binary absorbing sets, which are known to cause errors when decoding non-binary LDPC codes. Our construction is based on a careful selection of the code design parameters. Simulation results demonstrate the superior performance of codes designed according to our technique compared to existing state-of-the-art NB-QC codes.
Keywords :
cyclic codes; decoding; parity check codes; set theory; NB-QC code; absorbing set removal; code design parameter selection; decoding; error rate region; graph-based code; implementation-friendly structure; nonbinary absorbing set reduction; nonbinary quasi-cyclic LDPC Code; state-of-the-art NB-QC code; Algorithm design and analysis; Bit error rate; Decoding; Electronic mail; Labeling; Parity check codes; Simulation;
Conference_Titel :
Information Theory Workshop (ITW), 2014 IEEE
Conference_Location :
Hobart, TAS
DOI :
10.1109/ITW.2014.6970874
