Message-passing algorithms for optimal utilization of cognitive radio networks

Hamed Mahmoudi, Georgios Rodolakis, Leonidas Georgiadis, David Saad

    Research output: Chapter in Book/Published conference outputConference publication


    Cognitive Radio has been proposed as a key technology to significantly improve spectrum usage in wireless networks by enabling unlicensed users to access unused resource. We present new algorithms that are needed for the implementation of opportunistic scheduling policies that maximize the throughput utilization of resources by secondary users, under maximum interference constraints imposed by existing primary users. Our approach is based on the Belief Propagation (BP) algorithm, which is advantageous due to its simplicity and potential for distributed implementation. We examine convergence properties and evaluate the performance of the proposed BP algorithms via simulations and demonstrate that the results compare favorably with a benchmark greedy strategy.
    Original languageEnglish
    Title of host publication2013 IEEE International Conference on Communications Workshops, ICC 2013
    Number of pages5
    ISBN (Print)978-1-4673-5753-1
    Publication statusPublished - 2013

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