Optimal but Low-Complexity Optimization Method for Nonsquare Differential Massive MIMO

Katsuki, Yuma; Ishikawa, Naoki

doi:10.1109/vtc2021-fall52928.2021.9625337

Cited by 2 publications

(1 citation statement)

References 15 publications

(32 reference statements)

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“…In this section, we briefly review conventional nonsquarematrix-based differential space-time coding (N-DSTC) schemes, 1 including specific construction methods for spacetime codewords, encoding and decoding procedures. The design of the projection matrices E i is an integral part of the design of a given N-DSTC scheme, and can be considered a form of physical encryption applied over the space-time codewords.…”

Section: Conventional Nonsquare Differential Codingmentioning

confidence: 99%

Noncoherent Massive MIMO With Embedded One-Way Function Physical Layer Security

Katsuki

Abreu

Ishibashi

et al. 2023

IEEE Trans.Inform.Forensic Secur.

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We propose a novel physical layer security scheme that exploits an optimization method as a one-way function. The proposed scheme builds on nonsquare differential multipleinput multiple-output (MIMO), which is capable of noncoherent detection even in massive MIMO scenarios and thus resilient against risky pilot insertion and pilot contamination attacks. In contrast to conventional nonsquare differential MIMO schemes, which require space-time projection matrices designed via highly complex, discrete, and combinatorial optimization, the proposed scheme utilizes projection matrices constructed via low-complexity continuous optimization designed to maximize the coding gain of the system. Furthermore, using a secret key generated from the true randomness nature of the wireless channel as an initial value, the proposed continuous optimization-based projection matrix construction method becomes a one-way function, making the proposed scheme a physical layer secure differential MIMO system. An attack algorithm to challenge the proposed scheme is also devised, which demonstrates that the security level achieved improves as the number of transmit antennas increases, even in an environment where the eavesdropper can perfectly estimate channel coefficients and experience asymptotically large signal-to-noise ratios.

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Section: Conventional Nonsquare Differential Codingmentioning

confidence: 99%

Noncoherent Massive MIMO With Embedded One-Way Function Physical Layer Security

Katsuki

Abreu

Ishibashi

et al. 2023

IEEE Trans.Inform.Forensic Secur.

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Noncoherent Massive MIMO with Embedded One-Way Function Physical Layer Security

Katsuki¹,

Abreu²,

Ishibashi³

et al. 2022

Preprint

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We propose a novel physical layer security scheme that exploits an optimization method as a one-way function. The proposed scheme builds on nonsquare differential multipleinput multiple-output (MIMO), which is capable of noncoherent detection even in massive MIMO scenarios and thus resilient against risky pilot insertion and pilot contamination attacks. In contrast to conventional nonsquare differential MIMO schemes, which require space-time projection matrices designed via highly complex, discrete, and combinatorial optimization, the proposed scheme utilizes projection matrices constructed via low-complexity continuous optimization designed to maximize the coding gain of the system. Furthermore, using a secret key generated from the true randomness nature of the wireless channel as an initial value, the proposed continuous optimizationbased projection matrix construction method becomes a one wayfunction (in a cryptographic sense), making the proposed scheme a physical layer secure differential MIMO system. An attack algorithm to challenge the proposed scheme is also devised, which demonstrate that the security level achieved improves as the number of transmit antennas increases, even in an environment where the eavesdropper can perfectly estimate channel coefficients and experiences asymptotically large signal-to-noise ratios.

show abstract

Optimal but Low-Complexity Optimization Method for Nonsquare Differential Massive MIMO

Cited by 2 publications

References 15 publications

Noncoherent Massive MIMO With Embedded One-Way Function Physical Layer Security

Noncoherent Massive MIMO With Embedded One-Way Function Physical Layer Security

Noncoherent Massive MIMO with Embedded One-Way Function Physical Layer Security

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