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Comparison of reweighted message passing algorithms for LDPC decoding

: Wymeersch, H.; Penna, F.; Savic, V.; Jun, Z.


Kim, D.-I. ; Institute of Electrical and Electronics Engineers -IEEE-:
ICC 2013, IEEE International Conference on Communications. Vol.3 : Budapest, Hungary, 9 - 13 June 2013. Bridging the broadband divide
Piscataway, NJ: IEEE, 2013
ISBN: 978-1-4673-3120-3 (print)
ISBN: 978-1-4673-3122-7 (online)
International Conference on Communications (ICC) <2013, Budapest>
Fraunhofer HHI ()

Low density parity check (LDPC) codes can be decoded with a variety of decoding algorithms, offering a trade-off in terms of complexity, latency, and performance. We describe seven distinct LDPC decoders and provide a performance comparison for a practical regular LDPC code. Our simulations indicate that the best performance/latency trade-off is achieved by one version of the reweighted max-product decoder. When latency is not an issue, the traditional sum-product decoder yields the best performance.