RIS-Assisted Railway Communications in Tunnels Using Cloudrt Simulator for Wideband Systems
Tunnels are one of the most challenging environments for wireless communications in millimeter waves due to the high risk of signal attenuation and blockage with trains, particularly in narrow tunnels. In this context, reconfigurable intelligent surfaces (RISs) play a significant role by making communications controllable. Raytracer is an excellent tool for realistically modeling and studying the propagation and behavior of channels in these environments. This paper focuses on extending the CloudRT raytracer simulator to work with RIS for wideband systems and evaluating the feasibility of deploying RIS in railway tunnel scenarios. We compare the effectiveness of RIS in two types of tunnels: a rectangular single-track tunnel and a rectangular double-track tunnel. Simulation results show that RIS is particularly beneficial in narrow single-track tunnels, especially when a train obstructs the direct Tx-Rx path.
Authors
- Charlotte Langlais (ORCID: https://orcid.org/0000-0001-6234-5491)
- Marion Berbineau (ORCID: https://orcid.org/0000-0003-3807-9669)
- Ammar El Falou (ORCID: https://orcid.org/0000-0001-5758-0286)
- Aline Habib
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université de Bretagne Occidentale (FR)
- Laboratoire des Sciences et Techniques de l’Information de la Communication et de la Connaissance (FR)
- IMT Atlantique (FR)
- Université Gustave Eiffel (FR)
- King Abdullah University of Science and Technology (SA)
Publication Details
- Published
- 2025-06-17
- DOI
- https://doi.org/10.1109/vtc2025-spring65109.2025.11174315
- Primary Topic
- Millimeter-Wave Propagation and Modeling
- Type
- article
- Field-Weighted Citation Impact
- 0.00