Fluid antenna systems have at most K*=2⌈W⌉+1 significant independent eigenmodes set by aperture size W, enabling EDoF and WIM closed-form outage approximations that match exact diversity order and never underestimate performance.
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Fluid antenna systems enabling 6G: Principles, applications, and research directions
10 Pith papers cite this work. Polarity classification is still indexing.
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FAS channels are represented as AR(p) Gauss-Markov processes to derive the optimal MMSE interpolator, a tight lower bound on required observations, and a Kalman filter achieving that optimum with O(N) complexity.
Derives closed-form Rayleigh distribution for minimum inter-port distance in planar fluid antenna arrays (scaling O(M^{-1})) and a 2x2 geometric inertia matrix governing universal CRB for joint elevation-azimuth estimation, with invariance to azimuth and a precision-ambiguity trade-off.
A fluid-antenna hybrid architecture for DOA estimation achieves near fully-digital accuracy while cutting RF hardware complexity and training overhead in 6G networks.
Fluid antenna systems and rate-splitting multiple access mutually strengthen each other to deliver better spectral efficiency and interference handling than fixed-antenna baselines in 6G scenarios.
Derives unified closed-form CRB and min-spacing PDF for finite-aperture fluid antenna arrays, then uses gradient optimization to achieve 30% CRB and 42.5% MSE reductions.
The paper introduces diffusion FAS, a DDPM-driven spatial selection method that enables generative spatial stealth (up to 100x suppression) and target isolation in object-side ISAC scenarios.
Stochastic geometry yields approximate SIR coverage probability, average user rate, and cell sum-rate for uplink CUMA, showing competitive performance under limited CSI.
MAGRPO accelerates MARL training for fluid antenna-assisted wireless networks by replacing the critic with group relative advantage estimation, cutting training time 30-40% while matching MAPPO sum-rate performance.
A unified CRB framework for activity detection in fluid and fixed antenna systems shows FAS can achieve strong spatial diversity gains with reduced complexity.
citing papers explorer
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How Many Independent Modes Does a Fluid Antenna Have? A Closed-Form Outage Analysis via Equivalent Degrees of Freedom
Fluid antenna systems have at most K*=2⌈W⌉+1 significant independent eigenmodes set by aperture size W, enabling EDoF and WIM closed-form outage approximations that match exact diversity order and never underestimate performance.
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Beyond Covariance: Generative Spatial Correlation Modeling and Channel Interpolation for Fluid Antenna Systems
FAS channels are represented as AR(p) Gauss-Markov processes to derive the optimal MMSE interpolator, a tight lower bound on required observations, and a Kalman filter achieving that optimum with O(N) complexity.
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Finite-Aperture Planar Fluid Antenna Array
Derives closed-form Rayleigh distribution for minimum inter-port distance in planar fluid antenna arrays (scaling O(M^{-1})) and a 2x2 geometric inertia matrix governing universal CRB for joint elevation-azimuth estimation, with invariance to azimuth and a precision-ambiguity trade-off.
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Hybrid Architecture Gets Fluid: A New Paradigm for Direction-of-arrival Estimation in 6G Networks
A fluid-antenna hybrid architecture for DOA estimation achieves near fully-digital accuracy while cutting RF hardware complexity and training overhead in 6G networks.
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Fluid Antennas Meet Rate-Splitting Multiple Access: A New Path Forward for 6G Networks
Fluid antenna systems and rate-splitting multiple access mutually strengthen each other to deliver better spectral efficiency and interference handling than fixed-antenna baselines in 6G scenarios.
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Finite-Aperture Fluid Antenna Array Design: Analysis and Algorithm
Derives unified closed-form CRB and min-spacing PDF for finite-aperture fluid antenna arrays, then uses gradient optimization to achieve 30% CRB and 42.5% MSE reductions.
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Diffusion Fluid Antenna Systems for Resilient ISAC
The paper introduces diffusion FAS, a DDPM-driven spatial selection method that enables generative spatial stealth (up to 100x suppression) and target isolation in object-side ISAC scenarios.
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Stochastic Geometry Analysis of Uplink CUMA-Enabled Cellular Networks
Stochastic geometry yields approximate SIR coverage probability, average user rate, and cell sum-rate for uplink CUMA, showing competitive performance under limited CSI.
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MAGRPO: Accelerated MARL Training for Fluid Antenna-Assisted Wireless Network Optimization
MAGRPO accelerates MARL training for fluid antenna-assisted wireless networks by replacing the critic with group relative advantage estimation, cutting training time 30-40% while matching MAPPO sum-rate performance.
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Cramer-Rao Bounds for Activity Detection in Conventional and Fluid Antenna Systems
A unified CRB framework for activity detection in fluid and fixed antenna systems shows FAS can achieve strong spatial diversity gains with reduced complexity.