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Pinching Antenna Systems versus Reconfigurable Intelligent Surfaces in mmWave

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arxiv 2506.05102 v1 pith:T2R77MGN submitted 2025-06-05 eess.SP

Pinching Antenna Systems versus Reconfigurable Intelligent Surfaces in mmWave

Mostafa Samy , Hayder Al-Hraishawi , Madyan Alsenwi , Abuzar B. M. Adam , Symeon Chatzinotas , Bj\"orn Otteresten This is my paper
classification eess.SP
keywords antennapinchingsystemsintelligentmmwavebandsefficiencyreconfigurable
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abstract

Flexible and intelligent antenna designs, such as pinching antenna systems and reconfigurable intelligent surfaces (RIS), have gained extensive research attention due to their potential to enhance the wireless channels. This letter, for the first time, presents a comparative study between the emerging pinching antenna systems and RIS in millimeter wave (mmWave) bands. Our results reveal that RIS requires an extremely large number of elements (in the order of $10^4$) to outperform pinching antenna systems in terms of spectral efficiency, which severely impact the energy efficiency performance of RIS. Moreover, pinching antenna systems demonstrate greater robustness against hardware impairments and severe path loss typically encountered in high-frequency mmWave bands.

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Cited by 2 Pith papers

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

  1. RIS-Assisted Downlink Pinching-Antenna Systems: GNN-Enabled Optimization Approaches

    cs.NI 2025-11 conditional novelty 6.0

    A three-stage GNN is proposed to jointly optimize pinching-antenna positions, RIS phase shifts, and beamforming for downlink sum-rate and energy-efficiency maximization, showing simulated gains and millisecond-level i...

  2. Rate Optimization for Downlink URLLC via Pinching Antenna Arrays

    eess.SP 2025-09 conditional novelty 4.0

    For a single-user downlink with pinching antennas, the proposed design clusters antennas near the user's x-coordinate at minimum spacing, then fine-tunes positions to align phases for coherent combining.