Defense Against Intelligent Jammer in Cognitive Wireless Networks

Wireless channels became very crowd by severe increasing in number of wireless communication instruments. Utilizing interference of users transmitting on the same channel, an intelligent jammer can cause more harmful attacks to the transmission of a special user. In this paper, defense against an intelligent jammer is considered. We assume that the attacker can utilize the interference of other users in addition to its interference to jam a special user. A single controller stochastic game is proposed to model the interactions between special user and the jammer. Using simplex algorithm, we obtained the optimal strategies. Finally, simulation results show that the proposed approach leads to better performance.