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    Analysis and Implementation of Resource Efficient Probabilistic Gallager B LDPC Decoder

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    Name:
    NEWCAS_2017_final_Analysis_and ...
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    Description:
    Final Accepted Manuscript
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    Author
    Unal, Burak
    Ghaffari, Fakhreddine
    Akoglu, Ali
    Declercq, David
    Vasic, Bane
    Affiliation
    Univ Arizona, Dept Elect & Comp Engn
    Issue Date
    2017-08
    Keywords
    high-performance probabibilistic hard-decision LDPC decoders
    FPGA architectures
    
    Metadata
    Show full item record
    Publisher
    IEEE
    Citation
    Ünal, B., Ghaffari, F., Akoglu, A., Declercq, D., & Vasić, B. (2017, June). Analysis and implementation of resource efficient probabilistic Gallager B LDPC decoder. In New Circuits and Systems Conference (NEWCAS), 2017 15th IEEE International (pp. 333-336). IEEE.
    Journal
    2017 IEEE 15TH INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS)
    Rights
    Copyright © 2017, IEEE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Low-Density-Parity-Check (LDPC) codes have gained popularity in communication systems and standards due to their capacity-approaching error-correction performance. In this paper, we first expose the tradeoff between decoding performance and hardware performance across three LDPC hard-decision decoding algorithms: Gallager B (GaB), Gradient Descent Bit Flipping (GDBF), and Probabilistic Gradient Descent Bit Flipping (PGDBF). We show that GaB architecture delivers the best throughput while using fewest Field Programmable Gate Array (FPGA) resources, however performs the worst in terms of decoding performance. We then modify the GaB architecture, introduce a new Probabilistic stimulation function (PGaB), and achieve dramatic decoding performance improvement over the GaB, exceeding the performance of GDBF, without sacrificing its superior maximum operating frequency.
    ISSN
    2472-467X
    DOI
    10.1109/NEWCAS.2017.8010173
    Version
    Final accepted manuscript
    Additional Links
    http://ieeexplore.ieee.org/document/8010173/
    ae974a485f413a2113503eed53cd6c53
    10.1109/NEWCAS.2017.8010173
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