Efficient scheduling for delay constrained multi-rate CDMA systems

Chen Min, Oh Changyoon, Aylin Yener

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

    1 Scopus citations

    Abstract

    We consider efficient scheduling for a delay constrained multi-rate CDMA system. We first find the optimum schedule for CDMA systems without transmit diversity (TD), that minimizes the average transmission energy per bit while maintaining the short term average throughput for each user in the system. We observe that the specifics of the scheduling problem enables it polynomially solvable. Next, we consider the case when mobile devices are capable of employing two antennas and use Alamouti scheme to achieve TD. We observe that our proposed scheduling protocol can be extended to the system with TD with a modest sacrifice in performance and significant saving in computational complexity, as compared to the optimum scheduler. Simulation results are presented to demonstrate the performance of the proposed scheduling protocols, and the considerable energy savings they provide with respect to the TDMA-type scheduling.

    Original languageEnglish (US)
    Title of host publicationISSSTA-06 - 2006 IEEE 9th International Symposium on Spread Spectrum Symposium on Spread Spectrum Techniques and Applications, Proceedings
    Pages371-375
    Number of pages5
    DOIs
    StatePublished - 2006
    EventISSSTA-06 - 2006 IEEE 9th International Symposium on Spread Spectrum Symposium on Spread Spectrum Techniques and Applications - Manaus, Brazil
    Duration: Aug 28 2006Aug 31 2006

    Publication series

    NameIEEE International Symposium on Spread Spectrum Techniques and Applications

    Other

    OtherISSSTA-06 - 2006 IEEE 9th International Symposium on Spread Spectrum Symposium on Spread Spectrum Techniques and Applications
    CountryBrazil
    CityManaus
    Period8/28/068/31/06

    All Science Journal Classification (ASJC) codes

    • Electrical and Electronic Engineering
    • Control and Systems Engineering

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