Guaranteeing Secure communication in OFDM network with an active eavesdropper
Paper ID : 1150-IST
Mohammad Reza Javan *
Department of Electrical Engoneering, Shahrood University
In this paper, the problem of resource allocation for OFDM user to guarantee secure communication is considered. There exists an active eavesdropper which is able to both eavesdrop or jam the ongoing information transmission of OFDM user but not both at the same time. The OFDM user aim is to minimize its transmit power over all subcarriers while maintaining its secrecy rate above a predefined threshold. We assume that the OFDM user has no information about the action taken by the attacker before resource allocation phase, and hence it should consider the worst case in which the secrecy rate is the the minimum between the secrecy rate when attacker jams and when attacker eavesdrops. We evaluate our proposed scheme by simulations and show its effectiveness.
Secure communication, OFDM, Power minimization, eavesdropping,
jamming, secrecy rate.