Secure transmission via transmit antenna selection in MIMO wiretap channels
Yang N, Yeoh PL, Elkashlan M, Schober R, Collings IB (2012)
Publication Type: Conference contribution
Publication year: 2012
Pages Range: 789-794
Conference Proceedings Title: GLOBECOM - IEEE Global Telecommunications Conference
Event location: Anaheim, CA
ISBN: 9781467309219
DOI: 10.1109/GLOCOM.2012.6503209
Abstract
We propose and analyze transmit antenna selection (TAS) to enhance physical layer security in a wiretap channel with multiple antennas at the transmitter, the receiver, and the eavesdropper. We consider the practical scenario of passive eavesdropping, where the transmitter does not have any channel state information (CSI) of the eavesdropper's channel. In the main channel between the transmitter and the receiver, we select a single antenna at the transmitter that maximizes the instantaneous signal-to-noise ratio (SNR) at the receiver. At the receiver and the eavesdropper, we consider two combining techniques: 1) maximal-ratio combining (MRC) and 2) selection combining (SC). For non-identical Rayleigh fading between the main channel and the eavesdropper's channel, we first derive new closed-form expressions for the exact and asymptotic secrecy outage probabilities. The asymptotic results accurately reveal the secrecy diversity order and the secrecy array gain. Next, we derive new closed-form expressions for the probability of positive secrecy and characterize the ε-outage secrecy capacity. We show that, under TAS/MRC and TAS/SC protocols, the secrecy outage probability approaches zero and the ε-outage secrecy capacity increases with increasing number of transmitter antennas. © 2012 IEEE.
Authors with CRIS profile
Involved external institutions
Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Australia (AU)
Queen Mary University of London
United Kingdom (GB)
The University of Melbourne
Australia (AU)
Australia (AU)
Queen Mary University of London
United Kingdom (GB)
The University of Melbourne
Australia (AU)
How to cite
APA:
Yang, N., Yeoh, P.L., Elkashlan, M., Schober, R., & Collings, I.B. (2012). Secure transmission via transmit antenna selection in MIMO wiretap channels. In GLOBECOM - IEEE Global Telecommunications Conference (pp. 789-794). Anaheim, CA, US.
MLA:
Yang, Nan, et al. "Secure transmission via transmit antenna selection in MIMO wiretap channels." Proceedings of the 2012 IEEE Global Communications Conference, GLOBECOM 2012, Anaheim, CA 2012. 789-794.
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