Robust Power Control Algorithm for Multiple Primary Users and Secondary Users in Cognitive Radio Networks

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Provided by: Science & Engineering Research Support soCiety (SERSC)
Topic: Mobility
Format: PDF
Conventional distributed power control algorithms in Cognitive Radio (CR) are based on the assumption of perfect Channel State Information (CSI) which may lead to performance degradation in practical systems. In this paper, the robust distributed power control problem is investigated in CR systems by considering the uncertainty of channel gain. The objective is to maximize the sum rate of Secondary Users (SUs) subject to the Primary Users (PUs) interference power constraints and the transmission power constraint of SUs.
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