Minimising complexity in iterative multiuser detection using dynamic decoding schedules

David P. Shepherd, Fredrik Brännström, Zhenning Shi, Mark C. Reed

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    3 Citations (Scopus)

    Abstract

    In this paper we utilize extrinsic information transfer (EXIT) chart analysis with unequal user power levels in a coded direct-sequence code-division multiple-access (DS-CDMA) multiuser receiver to derive a dynamic decoding schedule. Conventional receivers generally follow a static predetermined decoding schedule. However, decoding delay and complexity can be significantly reduced while maintaining BER performance through a dynamic decoding schedule optimized for a given load and transmit power configuration. Verified through simulations, we show that complexity savings of up to 50% can be achieved. We also derive the effective EXIT charts which can be used for the convergence analysis and performance predictions of unequal power CDMA systems.

    Original languageEnglish
    Title of host publication2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
    DOIs
    Publication statusPublished - 2006
    Event2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Cannes, France
    Duration: 2 Jul 20065 Jul 2006

    Publication series

    NameIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC

    Conference

    Conference2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
    Country/TerritoryFrance
    CityCannes
    Period2/07/065/07/06

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