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arXiv · 2605.02408

Over-the-Air Computation via Segmented Waveguide-Enabled Pinching-Antenna Systems

Songnan Gu·Hao Jiang·Chongjun Ouyang·Dian Fan·Yuanwei Liu·Arumugam Nallanathan
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Abstract

A segmented waveguide-enabled pinching-antenna system (SWAN)-assisted over-the-air computation (AirComp) framework is proposed. Three transmission architectures, namely segment selection (SS), phase-shifter-free segment aggregation (SA), and phase-shifter-enabled SA, are developed for uplink signal aggregation. For each architecture, low-complexity algorithms are developed to optimize the pinching-antenna placement and the per-segment phase shifts. Numerical results demonstrate the effectiveness of the proposed approaches and the superiority of SWAN over the conventional pinching-antenna system (PASS). It is shown that both SS and SA achieve lower computation mean-squared error than the conventional PASS, while segment-wise phase control further improves the performance of SA.

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Songnan Gu, Hao Jiang, Chongjun Ouyang, Dian Fan, Yuanwei Liu, Arumugam Nallanathan. 2026-05-04. Over-the-Air Computation via Segmented Waveguide-Enabled Pinching-Antenna Systems. https://arxiv.org/abs/2605.02408

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