Spatially-coupled LDPC coding in cooperative wireless networks

Dushantha Nalin K Jayakody, Vitaly Skachek, Bin Chen

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper proposes a new technique of spatially-coupled low-density parity-check (SC-LDPC) code-based soft information relaying scheme for a two-way relay system. We introduce an optimized SC-LDPC codes in relay channels. A more precise model is proposed to characterize the soft noise on the soft symbols, using a pre-calculated look-up table at the destination. This requires less signalling overhead compared to existing soft noise modelling techniques. We also introduce a variance correction factor to provide a rectification to the equivalent total noise variance at the destination. Finally, we modify the LLR former at the destination which is tailored to the proposed soft information relaying technique. Simulation results demonstrate that the proposed relay protocol yields an improved BER performance compared to competitive schemes proposed in the literature.

    Original languageEnglish
    Title of host publication2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Volume2016-September
    ISBN (Electronic)9781467398145
    DOIs
    Publication statusPublished - 12 Sep 2016
    Event2016 IEEE Wireless Communications and Networking Conference, WCNC 2016 - Doha, Qatar
    Duration: 3 Apr 20167 Apr 2016

    Conference

    Conference2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
    CountryQatar
    CityDoha
    Period3.4.167.4.16

    ASJC Scopus subject areas

    • Engineering(all)

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