GCD extracts approximate geometric channel features from coarse scenario maps using ray tracing and neighborhood search, converts them to pseudo-channels via feature alignment, and fuses them with partial pilot estimates in a neural network to obtain complete CSI.
Learning radio en- vironments by differentiable ray tracing
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Geometry-Aided Channel Deduction: A Robust Channel Acquisition Framework Utilizing Coarse Scenario Prompt
GCD extracts approximate geometric channel features from coarse scenario maps using ray tracing and neighborhood search, converts them to pseudo-channels via feature alignment, and fuses them with partial pilot estimates in a neural network to obtain complete CSI.