VR-HMM-P-SOMP interleaves HMM-based visibility region estimation via Viterbi decoding into polar-domain simultaneous OMP, improving near-field ELAA channel estimation in low-SNR and sparse scenarios.
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Near-Field Spatial non-Stationary Channel Estimation: Visibility-Region-HMM-Aided Polar-Domain Simultaneous OMP
VR-HMM-P-SOMP interleaves HMM-based visibility region estimation via Viterbi decoding into polar-domain simultaneous OMP, improving near-field ELAA channel estimation in low-SNR and sparse scenarios.