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Open AccessArticle
High-Speed Rail Multiple-Input–Multiple-Output Channel Model Based on Reconfigurable Intelligent Surface System
by
Qiong Xu
Qiong Xu ,
Jianli Xie
Jianli Xie
Dr. Jianli Xie received a BSc. degree from Sichuan University in 1993, and a master's degree and a & [...]
Dr. Jianli Xie received a BSc. degree from Sichuan University in 1993, and a master's degree and a doctorate from the School of Electronics & Information Engineering, Lanzhou Jiaotong University in 1999 and 2014, respectively. From 1993 to 1996, he worked as an engineer at Lanzhou General Machinery Plant. From 1999 to 2007, he was a senior hardware engineer at Beijing Great Dragon company. He is currently working at Lanzhou Jiaotong University as a professor. His research interests include railway wireless communication and cognitive radio techniques.
* and
Zepeng Zhang
Zepeng Zhang
School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
*
Author to whom correspondence should be addressed.
Electronics 2024, 13(14), 2868; https://doi.org/10.3390/electronics13142868 (registering DOI)
Submission received: 20 June 2024
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Revised: 15 July 2024
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Accepted: 19 July 2024
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Published: 21 July 2024
Abstract
This paper presents a geometry-based stochastic model (GBSM) for a reconfigurable intelligent surface (RIS)-assisted multiple-input–multiple-output (MIMO) system tailored to high-speed rail environments, addressing energy leakage at space lattice points caused by the time-dependent reception direction and differing antenna array resolutions. Initially, this study explores the spatial domain feature map and spreading antenna lobe characteristics from various RIS array configurations to reshape the polarization distribution and facilitate a virtual antenna array. Subsequently, the time-dependent reception direction and position are derived by integrating the dynamics of train operations. Finally, the received signal is aligned with the polarization direction to assess the signal reception efficiency and finalize the model output. Research findings indicate that the number of RIS elements, spacing between RIS elements, and mobile relay (MR) movement characteristics significantly influence the performance of the system. Compared to existing models, the proposed model proficiently captures the effects of time-dependent receiver angle properties and RIS array configuration.
Share and Cite
MDPI and ACS Style
Xu, Q.; Xie, J.; Zhang, Z.
High-Speed Rail Multiple-Input–Multiple-Output Channel Model Based on Reconfigurable Intelligent Surface System. Electronics 2024, 13, 2868.
https://doi.org/10.3390/electronics13142868
AMA Style
Xu Q, Xie J, Zhang Z.
High-Speed Rail Multiple-Input–Multiple-Output Channel Model Based on Reconfigurable Intelligent Surface System. Electronics. 2024; 13(14):2868.
https://doi.org/10.3390/electronics13142868
Chicago/Turabian Style
Xu, Qiong, Jianli Xie, and Zepeng Zhang.
2024. "High-Speed Rail Multiple-Input–Multiple-Output Channel Model Based on Reconfigurable Intelligent Surface System" Electronics 13, no. 14: 2868.
https://doi.org/10.3390/electronics13142868
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