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Power Minimization for NOMA-assisted Pinching Antenna Systems With Multiple Waveguides
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The integration of pinching antenna systems with non-orthogonal multiple access (NOMA) has emerged as a promising technique for future 6G applications. This paper is the first to investigate power minimization for NOMA-assisted pinching antenna systems utilizing multiple dielectric waveguides. We formulate a total power minimization problem constrained by each user's minimum data requirements, addressing a classical challenge. To efficiently solve the non-convex optimization problem, we propose an iterative algorithm. Furthermore, we demonstrate that the interference function of this algorithm is standard, ensuring convergence to a unique fixed point. Numerical simulations validate that our developed algorithm converges within a few steps and significantly outperforms benchmark strategies across various data rate requirements. The results also indicate that the minimum transmit power, as a function of the interval between the waveguides, exhibits an approximately oscillatory decay with a negative trend.
Forward citations
Cited by 5 Pith papers
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Robust Resource Allocation for Pinching-Antenna Systems under Imperfect CSI
A robust resource allocation with outage constraints for pinching-antenna downlinks under user-location uncertainty, solved by geometric area analysis and PSO.
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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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Hybrid Wireless-Fed Pinching-Antenna Systems with Residual Self-Interference-Aware Optimization
A closed-form solution minimizes total power in a horn-fed, relay-assisted pinching-antenna system by optimizing the pinching position, relay gain, and base-station power.
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Energy-Efficient Design for Downlink Pinching-Antenna Systems with QoS Guarantee
The authors formulate and solve EE maximization for a TDMA downlink pinching-antenna system with QoS constraints, via antenna placement, a feasibility test, and alternating semi-analytical power and time allocation.
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