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RF-PGS: Fully-structured Spatial Wireless Channel Representation with Planar Gaussian Splatting

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arxiv 2508.16849 v1 pith:P4QQ2V6J submitted 2025-08-23 cs.CV cs.NI

RF-PGS: Fully-structured Spatial Wireless Channel Representation with Planar Gaussian Splatting

classification cs.CV cs.NI
keywords radiorf-pgschannelmethodsradiancespatialtrainingfully-structured
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In the 6G era, the demand for higher system throughput and the implementation of emerging 6G technologies require large-scale antenna arrays and accurate spatial channel state information (Spatial-CSI). Traditional channel modeling approaches, such as empirical models, ray tracing, and measurement-based methods, face challenges in spatial resolution, efficiency, and scalability. Radiance field-based methods have emerged as promising alternatives but still suffer from geometric inaccuracy and costly supervision. This paper proposes RF-PGS, a novel framework that reconstructs high-fidelity radio propagation paths from only sparse path loss spectra. By introducing Planar Gaussians as geometry primitives with certain RF-specific optimizations, RF-PGS achieves dense, surface-aligned scene reconstruction in the first geometry training stage. In the subsequent Radio Frequency (RF) training stage, the proposed fully-structured radio radiance, combined with a tailored multi-view loss, accurately models radio propagation behavior. Compared to prior radiance field methods, RF-PGS significantly improves reconstruction accuracy, reduces training costs, and enables efficient representation of wireless channels, offering a practical solution for scalable 6G Spatial-CSI modeling.

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Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Planar Gaussian Splatting with Bilinear Spatial Transformer for Wireless Radiance Field Reconstruction

    eess.SP 2026-04 unverdicted novelty 7.0

    BiSplat-WRF applies 2D planar Gaussians rendered on angular domains plus a bilinear spatial transformer to capture electromagnetic interactions, outperforming prior NeRF and GS methods on SSIM for wireless radiance fi...

  2. Generalizable Radio-Frequency Radiance Fields for Spatial Spectrum Synthesis

    cs.NI 2025-02 unverdicted novelty 7.0

    GRaF learns a scene-independent latent RF radiance field from proximate transmitters via an interpolation theory, then uses neural ray tracing to synthesize spectra at new transmitter or receiver positions.

  3. Construction and Dynamic Update of Channel Gain Maps via 3D Gaussian Splatting

    cs.IT 2026-07 conditional novelty 6.0

    A 3D Gaussian-splatting model decomposes grid-averaged channel gain into direct and scattered paths, reconstructs static channel gain maps, and incrementally updates them from sparse new measurements.

  4. TeRFS: Temporal-Evolving Radio Field Synthesis

    eess.SP 2026-05 unverdicted novelty 6.0

    TeRFS models dynamic radio fields via anisotropic spherical Gaussians bound to analytical temporal envelopes that enable explicit multipath birth-and-death, delivering 11.5% lower MSE and 6.9x faster training than baselines.

  5. Mip-NeWRF: Enhanced Wireless Radiance Field with Hybrid Encoding for Channel Prediction

    eess.SP 2025-11 conditional novelty 5.0

    Mip-NeWRF predicts indoor channel frequency responses from sparse measurements using scale-normalized hybrid positional encoding and Fresnel-aware synthesis, beating NeWRF by 14.3 dB NMSE in ray-traced simulations.