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eess.SP2026
Sharp Minimax Limits and Compatibility Spectra for Critical Near-DFT Index-Only Frequency Estimation
Armon Rasooli, Mohammad Sadegh Narimani
An -channel discrete Fourier transform (DFT) channelizer routes an on-grid sinusoid to a single output. When each frame reports only one energy-proportional channel index, signe…
eess.SP2026
Compressed Single-Tone Frequency Estimation With Unknown Complex Gain: Singular Rates and Global Identifiability
Armon Rasooli
Fixed linear compression can preserve local Fisher information for a sinusoid yet destroy global frequency identification, while a dark response can make local estimation nonregula…