Rotatable Antenna-Enabled Secure Wireless Communication

Dai L, Zheng B, Wu Q, You C, Schober R, Zhang R (2025)

Publication Language: English

Publication Type: Journal article

Publication year: 2025

Journal

IEEE Wireless Communications Letters IEEE Communications Society

DOI: 10.1109/LWC.2025.3593258

Abstract

Rotatable antenna (RA) is a promising technology that exploits new spatial degree-of-freedom (DoF) to improve wireless communication and sensing performance. In this letter, we investigate an RA-enabled secure communication system where confidential information is transmitted from an RA-based access point (AP) to a single-antenna legitimate user in the presence of multiple eavesdroppers. We aim to maximize the secrecy rate by jointly optimizing the transmit beamforming and the deflection angles of all RAs at the AP. Accordingly, we propose an efficient alternating optimization (AO) algorithm to obtain a high-quality suboptimal solution, where the generalized Rayleigh quotient-based beamforming is applied and the RAs' deflection angles are optimized by the successive convex approximation (SCA) technique. Our simulation results show that the proposed RA-enabled secure communication system achieves a significantly higher secrecy rate as compared to various benchmark schemes.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

South China University of Technology (SCUT) / 华南理工大学 CN China (CN) Southern University of Science and Technology CN China (CN) National University of Singapore (NUS) SG Singapore (SG)

How to cite

APA:

Dai, L., Zheng, B., Wu, Q., You, C., Schober, R., & Zhang, R. (2025). Rotatable Antenna-Enabled Secure Wireless Communication. IEEE Wireless Communications Letters. https://doi.org/10.1109/LWC.2025.3593258

MLA:

Dai, Liang, et al. "Rotatable Antenna-Enabled Secure Wireless Communication." IEEE Wireless Communications Letters (2025).

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