PERFORMANCE EVALUATION OF POPULAR ROUTING PROTOCOLS FOR COGNITIVE RADIO AD HOC NETWORKS
Cognitive radio ad hoc networks play an important role in wireless communications as they can use the existing wireless spectrum efficiently. Cognitive radio ad hoc networks possess all capabilities of the traditional wireless ad hoc networks, and are equipped with intrinsic capabilities such as the sensing ability to detect the time and location varying spectrum availability, and the cooperative working ability among cognitive users to minimize the bad effects to primary users. However, the low achievable performance of the networks may prevent them from being widely deployed. There are many works considering this issue. As a consequence, some routing protocols for cognitive radio ad hoc networks have been established. In this paper, we study some popular routing protocols proposed for cognitive radio ad hoc networks. We give the simulation results and analyses on the performance of these routing protocols in a comparable manner. It is our main contribution in this work.