User Power Control Aided Cooperative Spectrum Sensing Schemes in Cognitive Radio Networks

During the past recent years, Cooperative Spectrum Sensing (CSS) for Cognitive Radio Networks (CRN) have been widely investigated in various research aspects. With an aim to develop easy-to-implement CSS schemes, this paper proposes three optimal control strategies to manipulate the transmitting powers of the cooperative Secondary Users (SU) in the CRN. When the joint Channel Statistics (CS) of the sensing and reporting channels are perfectly known at the Fusion Center (FC), the authors first derive a CS Aided Optimal Power Control (CSA-OPC) scheme in closed-form; when the CS are entirely unknown, two blind power control methods are developed, namely the Principal EigenVector aided OPC (PEV-OPC) and the Blindly Weighted Multiple-EigenVector aided OPC (BWMEV-OPC).

Provided by: Institute of Electrical and Electronics Engineers Topic: Mobility Date Added: Oct 2011 Format: PDF

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