Cooperative Jamming for Secrecy of Wireless Communications
BAIHE MA, ZHIHONG LIU, YONG ZENG, ZHUO MA, HUI ZHANG AND JIANFENG MA School of Cyber Engineering Xidian University Xi'an, Shaanxi, 710126 P.R. China E-mail: liuzhihong@mail.xidian.edu.cn
This paper investigates cooperative jamming for security in wireless networks. No location information of eavesdropper is available and no constraint on the number of eavesdroppers is presupposed. A cooperative jamming strategy is proposed for jamming the eavesdroppers anywhere in the network, even if they are located quite close to the sender or the receiver. The basic ideas behind the strategy are to defeat eavesdroppers by a divide and conquer strategy, and exploit the helpful interference from the sender and the receiver to circumvent the nearby eavesdropper problem. Analysis and simulation results reveal that cooperative jamming can improve the secure performance and can be employed to establish initial connections in wireless networks.