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Beating resource constrained eavesdroppers: A physical layer security study
, S. Sarma, J. Kuri
Published in Institute of Electrical and Electronics Engineers Inc.
Pages: 167 - 174
In this paper, by augmenting beamforming with signal nulling, we present a scheme to improve the equivocation in wireless relay networks. Assuming global channel state information, memoryless adversaries, and the decode-and-forward relaying strategy, we seek to maximize the average achievable secrecy rate between the source and the legitimate destination, subject to an overall power budget per message. Then, exploiting the structure of the optimization problem, we present an online sequential approach to compute an achievable average rate. Finally, we use numerical evaluations to compare our method with the conventional schemes. © 2015 IFIP.