Redundancy-based Mitigation of Jamming Attacks

This paper considers the problem of mitigating jamming attacks. Specifically, the paper proposes a novel technique that makes a transmitter, equipped with a multichannel radio, redundantly transmit a message over multiple orthogonal channels having additive white Gaussian noise (AWGN) to optimize the probability of successfully receiving at least one copy of the message at the receiver in the presence of a jammer with the communication subject to InterSymbol Interference (ISI). For analytical tractability in the presence of ISI, the paper considers bounds on the probability of successfully receiving a message at the receiver. Under such a scenario, the paper considers the transmitter-receiver pair and the jammer to be strategic entities and uses Game Theory to derive an approximate Nash Equilibrium (NE) that characterizes the energy allocations of the transmitter (for redundantly transmitting the message over the channels) and the jammer (for jamming the channels). The paper also studies the problem of minimizing the number of channels needed to satisfy a given probability of successful message reception in the proposed redundancy-based transmission scheme. Extensive simulation results are provided to gain insights into the redundancy-based mitigation technique presented in the paper.