Wireless Secrecy Regions With Friendly Jamming

João P. Vilela, Matthieu Bloch, João Barros, Steven W. McLaughlin
2011 IEEE Transactions on Information Forensics and Security  
Inspired by recent results on information-theoretic security, we consider the transmission of confidential messages over wireless networks, in which the legitimate communication partners are aided by friendly jammers. We characterize the security level of a confined region in a quasi-static fading environment by computing the probability of secrecy outage in connection with two new measures of physical-layer security: the jamming coverage and the jamming efficiency. Our analysis for various
more » ... ing strategies based on different levels of channel state information provides insight into the design of optimal jamming configurations and shows that a single jammer is not sufficient to maximize both figures of merit simultaneously. Moreover, a single jammer requires full channel state information to provide security gains in the vicinity of the legitimate receiver.
doi:10.1109/tifs.2011.2111370 fatcat:23umkpxljzgmzfitmjmrxsbcwy