Competitive spectrum sharing in symmetric fading channel with incomplete information

Yair Noam, Amir Leshem, Hagit Messesr

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

    2 Scopus citations

    Abstract

    This paper considerers a symmetric Gaussian interference game with incomplete information where players choose between frequency division multiplexing (FDM) and full spread (FS) of their transmit power. Previously, the only known Nash equilibrium point for this game was the point where players mutually choose FS and interfere with each other. This point may lead to undesirable outcome from global network point of view and even for each user individually. It happens when mutual FDM is better to both users than mutual FS. In this paper, we show that if users agree to use different subbands in the case of FDM, then there exist a non pure-FS Nash equilibrium point, i.e. an equilibrium point where players choose FDM for some channel realizations and FS for the others. This Nash equilibrium point increases each user's throughput and therefore improves the spectrum utilization. Furthermore, to reach this point, the only instantaneous channel state information (CSI) required by each user is its interference-to-signal ratio.

    Original languageEnglish
    Title of host publication2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages2998-3001
    Number of pages4
    ISBN (Print)9781424442966
    DOIs
    StatePublished - 2010
    Event2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Dallas, TX, United States
    Duration: 14 Mar 201019 Mar 2010

    Publication series

    NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
    ISSN (Print)1520-6149

    Conference

    Conference2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010
    Country/TerritoryUnited States
    CityDallas, TX
    Period14/03/1019/03/10

    Keywords

    • Bayesian games
    • Interference channel
    • Spectrum management

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