A three-stage GNN jointly optimizes PA placement, RIS phases, beamforming and associations to maximize sum rate and energy efficiency in multi-BS multi-RIS pinching-antenna systems.
DeepTx: Deep learning beamforming with channel prediction,
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Spectral- and Energy-efficient Multi-BS Multi-RIS Pinching-antenna Systems: A GNN-based Approach
A three-stage GNN jointly optimizes PA placement, RIS phases, beamforming and associations to maximize sum rate and energy efficiency in multi-BS multi-RIS pinching-antenna systems.