Rigby, Alex R.Olivier, J.C.Myburgh, Hermanus CarelXiao, ChengshanSalmon, Brian P.2019-10-032019-10-032018-08-02Rigby, A.R., Olivier, J.C., Myburgh, H.C. et al. 2018, 'Augmented decoders for LDPC codes', EURASIP Journal onWireless Communications and Networking, vol. 2018, pp. 1-9.1687-1472 (print)1687-1499 (online)10.1186/s13638-018-1203-5http://hdl.handle.net/2263/71558The performance of a belief propagation decoder for low-density parity-check codes is limited by the presence of trapping sets in the code’s graph. This leads to an error floor at higher signal-to-noise ratios. We propose the use of an augmented decoder which operates by iteratively decoding on a set of graphs which have a subset of repeated check nodes. We compare the augmented decoder to other modified belief propagation decoders that have been presented in the literature. We show that for all the codes considered, the augmented decoder yields the best frame error rate in the error floor region.en© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.LDPC codesBP decodingTrapping setsError floor mitigationLow-density parity-check (LDPC)Belief propagation (BP)Article