Optimization of Cooperative Secondary Users using Hard Fusion Rules
In cognitive radio networks the energy efficiency depends on the number of cooperative secondary users. As the number of users increases the energy consumption increases and the energy efficiency decreases. So, to improve the energy efficiency we proposed an optimization technique in this paper. The optimal number of cooperative secondary users is calculated based on AND, OR and Majority fusion rules by maximizing the energy efficiency. The simulation results shows optimal number of cooperative secondary users for AND, OR and MAJORITY fusion rules.
Index Terms - Cooperative spectrum sensing, Energy efficiency, Optimization, Hard fusion rules