Hybrid digital-MiLAC beamforming for wideband MU-MISO OFDM requires more RF chains than narrowband cases but achieves 89.93% of fully-digital sum-rate with only 12.5% of the RF chains in highly frequency-selective channels.
Analog Computing for Signal Pr ocessing and Communications – Part I: Computing With Microwave Netwo rks
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Hybrid Digital and Microwave Linear Analog Computer (MiLAC)-aided Beamforming for Multiuser MIMO-OFDM Systems
Hybrid digital-MiLAC beamforming for wideband MU-MISO OFDM requires more RF chains than narrowband cases but achieves 89.93% of fully-digital sum-rate with only 12.5% of the RF chains in highly frequency-selective channels.