A consensus approach for cooperative communications in cognitive radio networks

Stupia, Ivan;Andreotti, Riccardo;Lottici, V.;Vandendorpe, Luc
(2012) 20th European Signal Processing Conference, EUSIPCO 2012 — Location: Bucharest (27.August.2012)

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Authors
  • Stupia, Ivanorcid-logoUCLouvain
    Author
  • Andreotti, RiccardoUCLouvain
    Author
  • Lottici, V.University of Pisa
    Author
  • Vandendorpe, LucUCLouvain
    Author
Abstract
In this paper, we investigate a decentralized power allocation (PA) algorithm, i.e., without the need of a fusion center, for a coalition of bit-interleaved coded (BIC) OFDM-based cognitive radio (CR) devices. Taking advantages of a game theoretical description for our problem, it is shown that the reliability of the secondary cooperative link can be remarkably improved through a simple average consensus algorithm keeping the interference produced to the primary users (PUs) under a prescribed threshold. Finally, the performance gain of the proposed PA policy is highlighted comparing it with conventional power allocation algorithms. © 2012 EURASIP.
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Stupia, I., Andreotti, R., Lottici, V., & Vandendorpe, L. (2012). A consensus approach for cooperative communications in cognitive radio networks. 20th European Signal Processing Conference, EUSIPCO 2012, 2674-2678.