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arXiv · 2508.08185

Pinching-Antenna Systems (PASS)-based Indoor Positioning

Yaoyu Zhang·Xin Sun·Jun Wang·Tianwei Hou·Anna Li·Yuanwei Liu·Arumugam Nallanathan
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Abstract

Pinching antenna (PA), a flexible waveguide integrated with dielectric particles, intelligently reconstructs line-of-sight channels. Utilizing its geometric deterministic model and meter-level reconstruction, PA systems (PASS) are applied to uplink indoor positioning. In this paper, the uplink positioning system model for PASS is firstly proposed. A PASS-based received signal strength indication (RSSI) method is proposed to measure the distance from the users to each PA, which is efficient and suitable for PASS. PASS-based weighted least squares (WLS) algorithm is designed to calculate the two-dimensional coordinates of the users. Several critical observations can be drawn from our results: i) More PAs on the waveguide improves the positioning accuracy and robustness. ii) When the number of PAs exceeds a certain threshold, the performance gain becomes marginal. iii) User locations between and near PAs yield superior positioning accuracy.

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Yaoyu Zhang, Xin Sun, Jun Wang, Tianwei Hou, Anna Li, Yuanwei Liu, Arumugam Nallanathan. 2025-08-11. Pinching-Antenna Systems (PASS)-based Indoor Positioning. https://arxiv.org/abs/2508.08185

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