An Introduction to Transmit Antenna Selection in MIMO Wiretap Channels
Release Date：2013-10-14
Author：Nan Yang, Maged Elkashlan, Phee Lep Yeoh, and Jinhong Yuan
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[Abstract] This paper is a survey of transmit antenna selection—a low-complexity, energy-efficient method for improving physical layer security in multiple-input multiple-output wiretap channels. With this method, a single antenna out of multiple antennas is selected at the transmitter. We review a general analytical framework for analyzing exact and asymptotic secrecy of transmit antenna selection with receive maximal ratio combining, selection combining, or generalized selection combining. The analytical results prove that secrecy is significantly improved when the number of transmit antennas increases.
[Keywords] physical layer security; transmit antenna selection; secrecy outage probability; wireless fading
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