A joint phase-time array with one radio-frequency chain can serve near- and far-field users on different subbands, and a graph attention network can allocate resources nearly as well as iterative optimization at much lower complexity.
Hybrid beamforming for massive MIMO: A survey,
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Hybrid Near/Far-Field Frequency-Dependent Beamforming via Joint Phase-Time Arrays
A joint phase-time array with one radio-frequency chain can serve near- and far-field users on different subbands, and a graph attention network can allocate resources nearly as well as iterative optimization at much lower complexity.