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Guan-Yue Qian

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#machine learning Preprint Nov 2026

4D Point Splatting for mmWave Radar Micro-Doppler Differentiable Rendering

This work presents 4D Point Splatting (4DPS), a physics-based differentiable renderer that fits an explicit moving scene to a real capture and can enable synthetic data generation for any human-centered downstream task and model, and scene editing for data augmentation.

A. Armouti, Guan-Yue Qian, Rajalakshmi Nandakumar · 0 citations
Preprint Sep 2026

SPARC: Sparse Path-Aware Residual Calibrator for Wireless Ray Tracing at Upper Mid-Band

Accurate site-specific ray tracing (RT) is essential for upper mid-band network planning, yet raw RT can produce per-path multipath component (MPC) power errors on the order of 19--24~dB in cluttered indoor environments. A fixed-geometry material-sensitivity bound shows that a 30% relative-permittivity perturbation cha...

Mingjun Ying, Guan-Yue Qian, Xin-Quan Wang et al. · 0 citations

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