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Joint Antenna Position and Transmit Power Optimization for Pinching Antenna-Assisted ISAC Systems
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This letter explores how pinching antennas, an advanced flexible-antenna system, can enhance the performance of integrated sensing and communication (ISAC) systems by leveraging their adaptability, cost-effectiveness, and ability to facilitate line-of-sight transmission. To achieve this, a joint antenna positioning and transmit power optimization problem is formulated to maximize the total communication data rate while meeting the target sensing requirements and the system energy constraint. To address the complex non-convex optimization problem, we propose a maximum entropy-based reinforcement learning (MERL) solution. By maximizing cumulative reward and policy entropy, this approach effectively balances exploration and exploitation to enhance robustness. Numerical results demonstrate that the proposed MERL algorithm surpasses other benchmark schemes in cumulative reward, total data rate, sensing signal-to-noise ratio, and stability.
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Cited by 6 Pith papers
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Joint Radiation Power, Antenna Position, and Beamforming Optimization for Pinching-Antenna Systems with Motion Power Consumption
A joint antenna-position, radiation-power, and beamforming optimization for pinching-antenna systems reduces average power consumption when motion power is included.
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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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Pinching-Antenna Systems For Indoor Immersive Communications: A 3D-Modeling Based Performance Analysis
A theoretical formula for successful transmission probability in multi-waveguide pinching-antenna indoor systems is derived and supported by Monte Carlo simulation.
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Pinching Antenna Systems versus Reconfigurable Intelligent Surfaces in mmWave
Reconfigurable intelligent surfaces need on the order of 10^4 to 10^5 elements to match pinching antenna systems in mmWave spectral efficiency, and pinching antennas show much higher energy efficiency under the assume...
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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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Analytical Optimization for Antenna Placement in Pinching-Antenna Systems
For fairness-based OMA, the optimal pinching-antenna location is the mean of users' x-coordinates and does not depend on their distance from the waveguide; for NOMA it moves exponentially toward the user nearest the w...
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