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A Cooperative Spectrum Sensing Algorithm to Minimize the Sensing Overhead of Cognitive Radio System

Received: 9 January 2019 Accepted: 20 March 2019 Cognitive radio (CR) technology is an emerging technology that overcomes the scarcity and poor utilization of spectrum resources. Under the constraint of system energy, this paper puts forward a cooperative spectrum sensing algorithm to minimize the sensing overhead, considering the mutual relation between sensing duration and the number of cognitive users. The simulation results show that, when the selected cognitive users face the same mean signalto-noise ratio (SNR), the system overhead can be minimized by determining the proper number of required cognitive users and sensing duration. Thus, the proposed algorithm was proved valid.