A self-supervised GNN with straight-through Gumbel-softmax training performs non-linear quantized precoding, matching 3-bit MRT rate with 1-bit DACs in single-user massive MIMO, though the GNN processing power limits the net energy gain.
Massive mimo is a reality—what is next?: Five promising research directions for antenna arrays,
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Learning to Quantize and Precode in Massive MIMO Systems for Energy Reduction: a Graph Neural Network Approach
A self-supervised GNN with straight-through Gumbel-softmax training performs non-linear quantized precoding, matching 3-bit MRT rate with 1-bit DACs in single-user massive MIMO, though the GNN processing power limits the net energy gain.