Abstract
Energy-efficiency is a significant parameter contributing to the performance of coordinated cognitive radio networks (CCRNs). To estimate the average value of sensing and reporting energy efficiency of CCRN, a new metric is proposed. This paper presents a new metric based on the gain from the coordination of missed detection and false alarm probabilities that minimize the interference on the primary users and maximize the throughput for cognitive terminals (CTs), respectively. Furthermore, the proposed maximum metric is placed by analytically figuring out the optimum number of coordinated CTs. The global average value of energy efficiency of sensing and reporting process among coordinated CTs with various probabilities of missed detection and false alarm is formulated. In addition, a new iterative CTs assignment strategy is proposed. Finally, the average energy-efficiency results are significantly enhanced as shown by simulations.
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