Friendly Jamming for Wireless Secrecy
The authors analyze the role of jamming as a means to increase the security of wireless systems. Specifically, they characterize the impact of cooperative/friendly jamming on the secrecy outage probability of a quasi-static wiretap fading channel. They introduce jamming coverage and jamming efficiency as security metrics, and evaluate the performance of three different jamming strategies that rely on various levels of channel state information. The analysis provides insight for the design of optimal jamming configurations and indicates that one jammer is not enough to maximize both metrics simultaneously.