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A Low-Complexity Placement Design of Pinching-Antenna Systems

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arxiv 2502.14250 v1 pith:255BVFDC submitted 2025-02-20 eess.SP

Ximing Xie , Fang Fang , Zhiguo Ding , Xianbin Wang This is my paper
classification eess.SP
keywords pinching-antennasystemsmultipleplacementantennasonlyaccessdesign
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Pinching-antenna systems have recently been proposed as a new candidate for flexible-antenna systems, not only inheriting the reconfiguration capability but also offering a unique feature: establishing line-of-sight links to mitigate large-scale path loss. However, sophisticated optimization of the placement of pinching antennas has very high complexity, which is challenging for practical implementation. This paper proposes a low-complexity placement design, providing the closed-form expression of the placement of pinching antennas, to maximize the sum rate of multiple downlink users. Orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) are both investigated when the pinching-antenna system is only equipped with a single antenna and only the OMA case is studied when there are multiple antennas equipped by the pinching-antenna system. Simulation results indicate pinching-antenna systems can outperform conventional fixed-antenna systems and are more suitable for large service areas.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Robust Resource Allocation for Pinching-Antenna Systems under Imperfect CSI

    cs.IT 2025-07 conditional novelty 5.0 of 10

    A robust resource allocation with outage constraints for pinching-antenna downlinks under user-location uncertainty, solved by geometric area analysis and PSO.

  2. Deep Learning Optimization of Two-State Pinching Antennas Systems

    cs.LG 2025-07 conditional novelty 5.0 of 10

    A graph neural network with distributed attention selects near-optimal subsets of active pinching antennas, matching a Gurobi solver's rates within a few percent and generalizing from 50 to 1000 antennas.

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