Deterministic Modeling of Dynamic ISAC Channels in RF Digital Twin Environments
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914431940689920 |
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| author | Montaner, Cesar Fenollosa, Saúl Ortega, Andres Beltrán, Hugo Cardona, Narcis |
| author_facet | Montaner, Cesar Fenollosa, Saúl Ortega, Andres Beltrán, Hugo Cardona, Narcis |
| contents | This paper introduces a methodology to calibrate Radio-Frequency Digital Twins (RF-DTs) for Integrated Sensing and Communication (ISAC) in dynamic wireless environments. The approach leverages high-resolution ray tracing in combination with wideband channel sounding to ensure consistency between simulated and measured propagation. The methodology is validated in urban scenarios featuring both mono-static and bi-static configurations, as well as moving user platforms and vehicles. Results show that the calibrated RF-DT reproduces key propagation effects, including multipath evolution, dynamic scatterers, and Doppler-induced signatures, with close agreement to measurements. These findings confirm that accurate geometry, material modeling, antenna patterns, and diffuse scattering are essential for realistic high-frequency ISAC simulation. By bridging the gap between simulation and measurement, the proposed calibration framework provides a scalable tool for developing and evaluating ISAC algorithms in complex, time-varying environments envisioned for 6G. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_28736 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Deterministic Modeling of Dynamic ISAC Channels in RF Digital Twin Environments Montaner, Cesar Fenollosa, Saúl Ortega, Andres Beltrán, Hugo Cardona, Narcis Signal Processing This paper introduces a methodology to calibrate Radio-Frequency Digital Twins (RF-DTs) for Integrated Sensing and Communication (ISAC) in dynamic wireless environments. The approach leverages high-resolution ray tracing in combination with wideband channel sounding to ensure consistency between simulated and measured propagation. The methodology is validated in urban scenarios featuring both mono-static and bi-static configurations, as well as moving user platforms and vehicles. Results show that the calibrated RF-DT reproduces key propagation effects, including multipath evolution, dynamic scatterers, and Doppler-induced signatures, with close agreement to measurements. These findings confirm that accurate geometry, material modeling, antenna patterns, and diffuse scattering are essential for realistic high-frequency ISAC simulation. By bridging the gap between simulation and measurement, the proposed calibration framework provides a scalable tool for developing and evaluating ISAC algorithms in complex, time-varying environments envisioned for 6G. |
| title | Deterministic Modeling of Dynamic ISAC Channels in RF Digital Twin Environments |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2603.28736 |