A unified CRB framework for activity detection in fluid and fixed antenna systems shows FAS can achieve strong spatial diversity gains with reduced complexity.
Orthogonal matching non-negative least squares for activity detection in unsourced random access
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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.