Robust Probabilistic Distributed Power Control Algorithm for Underlay Cognitive Radio Networks under Channel Uncertainties

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Provided by: Springer Science+Business Media
Topic: Networking
Format: PDF
Due to limited cooperation among users and erratic nature of wireless channel, it is difficult for Secondary Users (SUs) to obtain exact values of system parameters, which may lead to severe interference to Primary Users (PUs) and cause communication interruption for SUs. In this paper, the authors study robust power control problem for spectrum underlay cognitive radio networks with multiple SUs and PUs under channel uncertainties. Precisely, their objective is to minimize total transmit power of SUs under the constraints that the satisfaction probabilities of both interference temperature of PUs and signal-to-interference-plus-noise ratio of SUs exceed some thresholds.
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