A comprehensive study and an accurate comparison are introduced about what are the integrated features of medium access control protocols for cognitive radio ad hoc wireless networks. This study Also provides comparison of thirty medium access control protocols designs according to the mentioned features. Finally, we evaluate the performance of two systems for medium access control protocols; common control-multi channels cognitive medium access control protocol and non-common control -multi channels cognitive medium access control protocol using Network Simulator 2. This study shows the impact of increasing the packet size on the performance metrics such as network throughput and the packet delivery ratio. Simulation results prove that common control-multi channels cognitive medium access control protocol outperforms non-common control-multi channels cognitive medium access control protocol in all aspects of performance metrics with increasing the packet size.
Cognitive radio, cognitive radio networks, dynamic spectrum access, medium access control protocols, opportunistic spectrum access, spectrum sharing, Performance evaluation
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