Physical Layer Security Performance of Pinching-Antenna Systems With In-Waveguide Attenuation

Xiaochen Zhang; Haitao Du; Yanyu Cheng; Yushen Lin; Kah Chan Teh

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arXiv · 2604.15232

Physical Layer Security Performance of Pinching-Antenna Systems With In-Waveguide Attenuation

Xiaochen Zhang·Haitao Du·Yanyu Cheng·Yushen Lin·Kah Chan Teh

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Abstract

Pinching antenna (PA) systems have recently gained significant attention. While their physical-layer security (PLS) is being explored, most studies rely on idealized lossless models, ignoring practical waveguide attenuation. In this paper, we investigate the PLS performance of PA systems under a more realistic attenuation-incorporated waveguide model. Specifically, we investigate a PA system-based secure communication scenario consisting of a base station (BS), a legitimate user, and a passive eavesdropper. We derive expressions for closed-form upper and lower bounds on both the secrecy outage probability (SOP) and ergodic secrecy capacity (ESC). The results indicate that the PA system outperforms conventional fixed-antenna systems.

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BibTeX RIS

Xiaochen Zhang, Haitao Du, Yanyu Cheng, Yushen Lin, Kah Chan Teh. 2026-04-16. Physical Layer Security Performance of Pinching-Antenna Systems With In-Waveguide Attenuation. https://arxiv.org/abs/2604.15232

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