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.
@article{arxiv.2605.02408,
title = {Over-the-Air Computation via Segmented Waveguide-Enabled Pinching-Antenna Systems},
author = {Songnan Gu and Hao Jiang and Chongjun Ouyang and Dian Fan and Yuanwei Liu and Arumugam Nallanathan},
journal= {arXiv preprint arXiv:2605.02408},
year = {2026}
}