Fine-tuning a GNN precoder on real-world CSI from a 33-AP testbed improves cell-free massive MIMO sum rate by about 8.2 bits/channel use over the synthetic-only pretrained model.
Toward energy-efficient massive MIMO: Graph neural network precoding for mitigating non- linear PA distortion,
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GNN-based Precoder Design and Fine-tuning for Cell-free Massive MIMO with Real-world CSI
Fine-tuning a GNN precoder on real-world CSI from a 33-AP testbed improves cell-free massive MIMO sum rate by about 8.2 bits/channel use over the synthetic-only pretrained model.