A hybrid holographic and digital beamforming scheme for multi-altitude LEO downlinks is proposed, with a statistical-CSI MMSE combiner that the authors claim matches full-CSI throughput in dense deployments.
Edge-assisted multi-layer offloading optimization of LEO satellite-terrestrial integrated networks,
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Holographic Metasurface-Based Beamforming for Multi-Altitude LEO Satellite Networks
A hybrid holographic and digital beamforming scheme for multi-altitude LEO downlinks is proposed, with a statistical-CSI MMSE combiner that the authors claim matches full-CSI throughput in dense deployments.