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Pinching-Antenna Assisted ISAC: A CRLB Perspective
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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
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Capacity Characterization of Pinching-Antenna Systems
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.
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Pinching-Antenna System Design with LoS Blockage: Does In-Waveguide Attenuation Matter?
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.
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Secure Pinching Antenna-aided ISAC
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.
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Pinching-Antenna Systems with In-Waveguide Attenuation: Performance Analysis and Algorithm Design
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...
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Multi-Waveguide Pinching Antennas for ISAC
A successive convex approximation algorithm jointly optimizes transmit pinching-antenna locations and beamforming for a multi-waveguide integrated sensing and communications system.
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Wireless Sensing via Pinching-Antenna Systems
A pinching-antenna transmitter paired with leaky-coaxial-cable reception is optimized to lower the Cramér-Rao bound for multi-target wireless sensing.
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Rate Optimization for Downlink URLLC via Pinching Antenna Arrays
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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