Performance Evaluation of Medium Access Control Protocols for Cognitive Radio Ad Hoc Networks

Cognitive radio is a smart technology which can enhance the wireless communications by using the opportunistic access of the spectrum. Cognitive Radio Ad Hoc Network is a promising wireless network which depends on this technology. In this paper, we evaluate the performance evaluation of two different medium Access control protocols scenarios; single radio-multi channels Cognitive medium Access Control Protocol and two radios-multi channels cognitive medium access control protocol using Network Simulator 2 (NS-2). This study investigates the impact of increasing the packet size on the performance metrics such as network throughput. Simulation results proves that single radio-multi channels cognitive medium access control protocol outperforms the two radios-multi channels cognitive medium access control protocol in all aspects of performance metrics with increasing the packet size.