Fluid antenna systems with continuously optimized positions achieve linear DOF growth with aperture size D/λ and O(1/D^{2L}) CRB scaling for L sources, outperforming grid-constrained designs via a two-stage FAS-MUSIC algorithm.
Designs and challenges in fluid antenna system hardware,
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Sparse Fluid Antenna Arrays: Continuous Position Design Beyond Classical DOF Limits
Fluid antenna systems with continuously optimized positions achieve linear DOF growth with aperture size D/λ and O(1/D^{2L}) CRB scaling for L sources, outperforming grid-constrained designs via a two-stage FAS-MUSIC algorithm.