Optimal Transmit Antenna Selection for Massive MIMO Wiretap Channels

Asaad S, Bereyhi A, Rabiei AM, Müller R, Schaefer RF (2018)

Publication Type: Journal article, Original article

Publication year: 2018

Journal

IEEE Journal on Selected Areas in Communications Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 36

Pages Range: 817 - 828

Journal Issue: 4

DOI: 10.1109/JSAC.2018.2825159

Open Access Link: https://arxiv.org/abs/1803.01372v1

Abstract

In this paper, we study the impacts of transmit antenna selection on the secrecy performance of massive MIMO systems. We consider a wiretap setting in which a fixed number of transmit antennas are selected and then confidential messages are transmitted over them to a multi-antenna legitimate receiver while being overheard by a multi-antenna eavesdropper. For this setup, we derive an accurate approximation of the instantaneous secrecy rate. Using this approximation, it is shown that in some wiretap settings under antenna selection the growth in the number of active antennas enhances the secrecy performance of the system up to some optimal number and degrades it when this optimal number is surpassed. This observation demonstrates that antenna selection in some massive MIMO settings not only reduces the RF-complexity, but also enhances the secrecy performance. We then consider various scenarios and derive the optimal number of active antennas analytically using our large-system approximation. Numerical investigations show an accurate match between simulations and the analytic results.

Authors with CRIS profile

Saba Asaad Lehrstuhl für Digitale Übertragung (IDC) Ali Bereyhi Lehrstuhl für Digitale Übertragung (IDC) Ralf Müller Professur für Informationsübertragung

Involved external institutions

Technische Universität Berlin DE Germany (DE) University of Tehran IR Iran, Islamic Republic of (IR)

How to cite

APA:

Asaad, S., Bereyhi, A., Rabiei, A.M., Müller, R., & Schaefer, R.F. (2018). Optimal Transmit Antenna Selection for Massive MIMO Wiretap Channels. IEEE Journal on Selected Areas in Communications, 36(4), 817 - 828. https://doi.org/10.1109/JSAC.2018.2825159

MLA:

Asaad, Saba, et al. "Optimal Transmit Antenna Selection for Massive MIMO Wiretap Channels." IEEE Journal on Selected Areas in Communications 36.4 (2018): 817 - 828.

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