Collision Avoidance In Cognitive Radio Adhoc Networks Using Leach Algorithm

One of the most important operation in ad hoc networks is the broadcast whose protocol is very useful in the wireless system. In earlier days infrastructure based networks were used which denied secondary users from using the free channels. The existence of ad hoc networks makes the cognitive radio very useful. A stream of channels are available for the secondary users in cognitive radio along with the primary users. In this paper, we discuss the modified version of a fully-distributed Broadcast protocol in multi-hop Cognitive Radio ad hoc networks with collision avoidance, BRACER. We consider the availability of spectrum for the unlicensed users along with the primary user for the transmission to take place