Countermeasure Against Physical Layer Attack in Cognitive Radio Networks

A “Cognitive radio” is a latest technology aiming to solve the spectrum scarcity problem by allocating the spectrum to secondary users. It aims to improve the utilization of the radio spectrum by reducing the spectrum holes. The existing systems that have been proposed so far provided the solution for some attacks in the Physical layer of Cognitive radio with a limited number of nodes, evaluated with the parameters like end to end delay, packet delivery with least security. Also the methods have not provided the accurate solution for specific application. Our project aims at providing solution for the physical layer attack with enhanced security considering large number of nodes and thus reduces the interference among primary and secondary