DVB-T2 LDPC decoder with perfect conflict resolution

Xiongxin Zhao, Zhixiang Chen, Xiao Peng, Dajiang Zhou, Satoshi Goto

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

    5 Citations (Scopus)

    Abstract

    In this paper we focus on the resolution of the message updating conflict problem in layered algorithm for DVB-T2 LDPC decoders. Unlike the previous resolutions, we directly implement the layered algorithm without modifying the parity-check matrices (PCM) or the decoding algorithm. DVB-T2 LDPC decoder architecture is also proposed in this paper with two new techniques which guarantee conflict-free layered decoding. The PCM Rearrange technique reduces the number of conflicts and eliminates all of data dependency problems between layers to ensure high pipeline efficiency. The Layer Division technique deals with all remaining conflicts with a well-designed decoding schedule. Experiment results show that compared to state-of-the-art works we achieve a slight error-correcting performance gain for DVB-T2 LDPC codes.

    Original languageEnglish
    Title of host publication2012 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2012 - Proceedings of Technical Papers
    DOIs
    Publication statusPublished - 2012
    Event2012 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2012 - Hsinchu
    Duration: 2012 Apr 232012 Apr 25

    Other

    Other2012 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2012
    CityHsinchu
    Period12/4/2312/4/25

    ASJC Scopus subject areas

    • Hardware and Architecture

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  • Cite this

    Zhao, X., Chen, Z., Peng, X., Zhou, D., & Goto, S. (2012). DVB-T2 LDPC decoder with perfect conflict resolution. In 2012 International Symposium on VLSI Design, Automation and Test, VLSI-DAT 2012 - Proceedings of Technical Papers [6212664] https://doi.org/10.1109/VLSI-DAT.2012.6212664