arXiv AI By Armen Manukyan, Hrant Khachatrian, Edvard Ghukasyan, Theofanis P. Raptis

On the Limitations of Ray-Tracing for Learning-Based RF Tasks in Urban Environments

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arXiv:2507. 19653v2 Announce Type: replace-cross Abstract: We study the realism of Sionna v1.

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arXiv Machine Learning
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The Vienna 4G/5G Drive-Test Dataset

The Vienna 4G/5G Drive-Test Dataset is a city‑scale open dataset of georeferenced LTE and 5G NR measurements collected across Vienna, Austria. It combines passive wideband scanner observations with active handset logs, offering complementary network‑side and user‑side views of deployed radio access networks. The dataset includes inferred base‑station deployment descriptors, high‑resolution building and terrain models, and is organized into scanner, handset, estimated cell information, and city‑model components to support reproducible benchmarking in environment‑aware learning, propagation modeling, coverage analysis, and ray‑tracing calibration workflows.

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RIS-Aided mmWave Localization Under Cross-Link Interference via Beam-Domain ML Fingerprinting

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Physics-Unrolled Neural Operator for Wireless Field Modeling

The paper introduces Physics-Unrolled Hybrid Neural Operator (PU‑HNO), a three‑stage cascade that transforms low‑fidelity ray‑tracing outputs and scene priors into high‑fidelity indoor radio maps by sequentially modeling reflection, diffraction, and scattering. It demonstrates that, under conditionally unbiased label noise, the model can learn stable propagation structures and surpass its own training labels. Experiments on varied floorplans show PU‑HNO outperforming image‑to‑image baselines, wireless learning models, and monolithic neural operators in both image quality and wireless deployment metrics.

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