Proposes WB-CL-KL estimator for wideband near-field XL-MIMO channel estimation under hybrid compression using cross-subcarrier KL covariance fitting with OFDM Fresnel model and derives wideband CRB showing near-optimal performance.
Covariance-guided DFT beam selection for beamspace ESPRIT in hybrid mmWave sensor arrays,
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Wideband Near-Field Channel Estimation Under Hybrid Compression: Cross-Subcarrier KL Covariance Fitting With OFDM Fresnel Model
Proposes WB-CL-KL estimator for wideband near-field XL-MIMO channel estimation under hybrid compression using cross-subcarrier KL covariance fitting with OFDM Fresnel model and derives wideband CRB showing near-optimal performance.