Abstract
Cognitive Radio (CR) is an emerging technology which enables a secondary user (SU) to utilize the unoccupied spectrum holes owned by a primary user (PU) through spectrum sensing in order to maximize the utilization of finite spectrum resources. Although CRNs maximize the channel bandwidth resources without any impact upon well-established regulation of spectrum allocation but on the other hand energy consumption can be a challenge as efficient performance and energy consumption coexists. Spectrum sensing is very important part of spectrum management in CRNs as it detects the free bands to shift over the transmission of SU to it when PU comes back to its licensed band. In this research we proposed a novel spectrum sensing strategy that performs sensing in an energy efficient manner to select the most suitable target hole. We have compared our proposed strategy with existing spectrum sensing strategies in CRNs in a theoretical manner. Results show that proposed spectrum sensing strategy has better performance with comparison of recent technologies.