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.
Graph neural network-based ac- tive and passive beamforming for distributed STAR-RIS-assisted multi- user MISO systems,
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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.