PropSplat: Map-Free RF Field Reconstruction via 3D Gaussian Propagation Splatting
Building a site-specific propagation model typically requires either ray-tracing over detailed 3D maps or dense measurement campaigns. Both approaches are expensive and often infeasible for rapid deployments where geographic data is unavailable or outdated. We present PropSplat, a map-free propagation modeling method that reconstructs radio frequency (RF) fields using 3D anisotropic Gaussian primitives. Each Gaussian encodes a scalar path loss offset relative to an explicit baseline path loss model with a learnable path loss exponent. Gaussians are initialized along observed transmitter--receiver paths and optimized end-to-end to learn the propagation environment without external informat...
| Authors | William Bjorndahl, Maninder Pal Singh, Farhad Nouri et al. |
|---|---|
| Primary category | eess.SP |
| Published | 8 May 2026 |
| Last updated at source | 8 May 2026 |
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