Low complexity decoding for Raptor codes for hybrid-ARQ systems

Jun Heo, Sung Won Kim, Joon Tae Kim, Jin Young Kim

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    In this paper we present a low complexity decoding algorithm for Raptor codes which is used for incremental redundancy hybrid ARQ schemes. Encoding and decoding Raptor codes are the processes of making encoding symbols from the source symbols and the recovery of the source symbols from the received encoding symbols transmitted through an erasure channel, respectively. If the received encoding symbols are insufficient to recover the source symbols, additional encoding symbols are delivered and decoded with the previously received encoding symbols. We propose a low complexity decoding algorithm which efficiently combines the previously received encoding symbols and incremental encoding symbols. The proposed algorithm has excellent potential for realizing low power operation and higher throughput transmission due to its highly reduced computational complexity.

    Original languageEnglish
    Pages (from-to)390-395
    Number of pages6
    JournalIEEE Transactions on Consumer Electronics
    Volume54
    Issue number2
    DOIs
    Publication statusPublished - 2008 May

    Bibliographical note

    Funding Information:
    This work was supported in part by the KOSEF grant funded by the MIC, Korea, under ITRC support program supervised by the IITA (IITA-2007-C1090-0701-0045) and by Kwangwoon University of 2006. Jun Heo is correspond author with the School of Electrical Engineering, Korea University, Seoul 136-701, Korea (email: [email protected] ). Sung Won Kim is with the Department of Electronics Engineering, Konkuk University, Seoul 143-701, Korea (email: [email protected] ). Joon Tae Kim is with the Department of Electronics Engineering, Konkuk University, Seoul 143-701, Korea (email: [email protected]). Jin Young Kim is with the Department of Radio Science and Engineering, Kwangwoon University, Seoul 139-701, Korea (email: [email protected]).

    Keywords

    • Algorithm design and analysis
    • Complexity theory
    • Decoding
    • Electronic mail
    • Encoding
    • Equations
    • Throughput

    ASJC Scopus subject areas

    • Media Technology
    • Electrical and Electronic Engineering

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