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Pinching-Antenna Assisted ISAC: A CRLB Perspective

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arxiv 2504.05792 v1 pith:AINHTN7S submitted 2025-04-08 cs.IT eess.SPmath.IT

classification cs.ITeess.SPmath.IT
keywords antennascrlbpinchingfeaturesisacletterperspectivepositioning
verification ladder T0 review T1 audit T2 compute T3 formal
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Recently, pinching antennas have attracted significant research interest due to their capability to reconfigure wireless channels as well as their array configuration flexibility. This letter focuses on how these features can be used to support integrated sensing and communications (ISAC) from the Cramer Rao lower bound (CRLB) perspective. In particular, the CRLB achieved by pinching antennas is first derived and then compared to that of conventional antennas. The presented analytical and simulation results demonstrate that using pinching antennas can significantly reduce CRLB and, hence, enhance positioning accuracy. In addition, this letter also reveals that the low-cost and reconfigurability features of pinching antennas can be utilized to realize flexible user-centric positioning.

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Cited by 7 Pith papers

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

  1. Capacity Characterization of Pinching-Antenna Systems

    cs.IT 2025-06 conditional novelty 7.0 of 10

    This paper characterizes the two-user capacity region of pinching-antenna systems, proving their capacity region contains that of fixed-antenna systems and that TDMA and FDMA are nearly optimal in the multiple-pinch case.

  2. Pinching-Antenna System Design with LoS Blockage: Does In-Waveguide Attenuation Matter?

    eess.SP 2025-08 conditional novelty 5.0 of 10

    Under realistic LoS blockage, ignoring in-waveguide attenuation costs only about α^2/(β ln2) bps/Hz in large dense-blockage areas, but the loss grows with area squared when blockages are sparse.

  3. Secure Pinching Antenna-aided ISAC

    cs.IT 2025-07 conditional novelty 5.0 of 10

    A pinching-antenna ISAC scheme that aligns antennas with users and targets, then optimizes beamforming and artificial noise, is claimed to outperform equidistant and fixed-array baselines by 3-30 dB in illumination power.

  4. Pinching-Antenna Systems with In-Waveguide Attenuation: Performance Analysis and Algorithm Design

    eess.SP 2025-06 reject novelty 5.0 of 10

    Pinching-antenna placement must trade free-space path loss against exponential in-waveguide attenuation; the paper gives a closed-form single-user solution and a rate-loss approximation, then extends to multi-user bea...

  5. Multi-Waveguide Pinching Antennas for ISAC

    cs.IT 2025-05 conditional novelty 5.0 of 10

    A successive convex approximation algorithm jointly optimizes transmit pinching-antenna locations and beamforming for a multi-waveguide integrated sensing and communications system.

  6. Wireless Sensing via Pinching-Antenna Systems

    eess.SP 2025-05 conditional novelty 5.0 of 10

    A pinching-antenna transmitter paired with leaky-coaxial-cable reception is optimized to lower the Cramér-Rao bound for multi-target wireless sensing.

  7. Rate Optimization for Downlink URLLC via Pinching Antenna Arrays

    eess.SP 2025-09 conditional novelty 4.0 of 10

    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.

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