Attention Over Gram Matrices: A Scalable Approach to Distributed Beamforming in Cell-Free Massive MIMO
Cell-free massive multiple-input multiple-output (CF-mMIMO) systems can provide high spectral efficiency and uniform service. However, downlink beamforming can incur substantial two-way fronthaul overhead for network-wide channel state information (CSI) collection at the central processor (CP) and beamformer delivery t...