Securing Massive MIMO Systems: Secrecy for Free with Low-Complexity Architectures

Bereyhi A, Asaad S, Müller R, Schaefer RF, Fischer G, Vincent Poor H (2021)


Publication Type: Journal article

Publication year: 2021

Journal

DOI: 10.1109/TWC.2021.3070529

Abstract

Passively overheard massive multiple-input multiple-output (MIMO) settings are capable of suppressing eavesdroppers via narrow beamforming towards legitimate receivers. This implies that secrecy is obtained almost for free in these settings. This study shows that this is a valid property for a large class of low-complexity massive MIMO transmitters. The investigations consider two dominant approaches for complexity reduction, namely antenna selection and hybrid analog-digital precoding. It is shown that using either approach, the information leakage per achievable sum-rate vanishes as the number of transmit antennas grows large. The results demonstrate that, as the transmit array size grows large, the normalized information leakage obtained by antenna selection and hybrid analog-digital precoding converges to zero double-logarithmically and logarithmically, respectively. The analytical results are confirmed for various benchmark architectures via numerical simulations.

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APA:

Bereyhi, A., Asaad, S., Müller, R., Schaefer, R.F., Fischer, G., & Vincent Poor, H. (2021). Securing Massive MIMO Systems: Secrecy for Free with Low-Complexity Architectures. IEEE Transactions on Wireless Communications. https://doi.org/10.1109/TWC.2021.3070529

MLA:

Bereyhi, Ali, et al. "Securing Massive MIMO Systems: Secrecy for Free with Low-Complexity Architectures." IEEE Transactions on Wireless Communications (2021).

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