Hybrid-Field Beamforming for Wideband Extremely Large MIMO Systems
This letter presents an OFDM-based hybrid beamforming (HBF) design for wideband extremely large-scale MIMO (XL-MIMO) systems in a hybrid near-field/far-field (hybrid-field) environment. As apertures grow in Sub-THz and millimeter-wave systems, the Rayleigh distance increases substantially and near-field (NF) and far-fi...