IEEE International Conference on Communications workshops

Joint power and beam optimization in a multi-carrier MIMO wiretap channel with Full-Duplex jammer

Omid Taghizadeh, Tianyu Yang, Rudolf Mathar

Published May 1, 2017• 3 citations

Abstract

In this paper we address a sum secrecy rate maximization problem for a multi-carrier and MIMO communication system. We consider the case that the receiver is capable of full-duplex (FD) operation and simultaneously sends jamming signal to a potential eavesdropper. In particular, we simultaneously take advantage of the spatial and frequency diversity in the system in order to obtain a higher level of security in the physical layer. Due to the non-convex nature of the resulting mathematical problem, we propose an iterative solution with a guaranteed convergence, based on block coordinate descent method, by re-structuring our problem as a separately convex program. Moreover, for the special case that the transmitter is equipped with a single antenna, an optimal transmit power allocation strategy is obtained analytically, assuming a known jamming strategy. The performance of the proposed design is then numerically evaluated compared to the other design strategies, and under different system assumptions.

DOI: 10.1109/iccw.2017.7962841

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