Wireless Sensing via Pinching-Antenna Systems

TL;DR

This paper introduces a novel wireless sensing system called PASS that uses pinching antennas and dielectric waveguides to improve sensing accuracy and deployment flexibility, supported by optimized waveform and antenna positioning.

Contribution

The paper proposes a new wireless sensing architecture with optimized antenna placement and waveform design, utilizing leaky coaxial cables for wide-area echo collection, and demonstrates its advantages over traditional systems.

Findings

Enhanced sensing accuracy and robustness demonstrated in simulations

Significant gains over conventional sensing systems

Effective joint optimization of waveform and antenna positions

Abstract

A wireless sensing architecture via pinching antenna systems is proposed. Compared to conventional wireless systems, PASS offers flexible antenna deployment and improved probing performance for wireless sensing by leveraging dielectric waveguides and pinching antennas (PAs). To enhance signal reception, leaky coaxial (LCX) cables are used to uniformly collect echo signals over a wide area. The Cram\'er-Rao bound (CRB) for multi-target sensing is derived and then minimized through the joint optimization of the transmit waveform and the positions of PAs. To solve the resulting highly coupled, non-convex problem, a two-stage particle swarm optimization (PSO)-based algorithm is proposed. Numerical results demonstrate significant gains in sensing accuracy and robustness over conventional sensing systems, highlighting the benefits of integrating LCX-based reception with optimized PASS configurations.