首页|Wideband channel measurement and characterization based on 5G passive sounding in railway scenarios

Wideband channel measurement and characterization based on 5G passive sounding in railway scenarios

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  • NETL
  • NSTL
  • China Inst Communications
With the development of wireless communication, the fifth generation mobile communication technology (5G) has emerged as a hot topic in highspeed railway communication system and has moved towards industrial application. Investigating the radio propagation characteristics in 5G high-speed train (HST) scenarios is essential for enhancing wireless coverage and overall system performance. We propose a novel 5G passive sounding scheme to extract channel impulse responses (CIRs) using channel state information reference signals (CSI-RS) from the target 5G base station (BS). Detailed procedures for time-frequency synchronization, CSI-RS detection and extraction are presented through simulations. Through the laboratory work involving absolute power calibration, phase coherence calibration and power delay profile (PDP) validation, we validate the accuracy and performance of the developed platform. Furthermore, a measurement campaign was conducted in HST scenarios encompassing both residential and undeveloped areas. The path loss (PL) model and the channel characteristics including stationarity interval (SI), multipath components (MPCs), shadow fading (SF), Rician K-factor, root mean square (RMS) delay spread and received correlation coefficients are analyzed and fitted. The estimated channel characteristics and the statistical model presented in this paper will contribute to the research on HST radio propagation and the development of 5G railway communication systems.

5G mobile communicationAmplitude modulationOFDMSynchronizationCorrelationSymbolsWidebandRailway communicationIndexesFrequency synchronization

Zheng Peng、Fei Dan、Chen Chen、Chen Haoran、Huang Yanyan、Ai Bo

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School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China State Key Laboratory of Advanced Rail Autonomous Operation, Beijing Jiaotong University, Beijing 100044, China

State Key Laboratory of Advanced Rail Autonomous Operation, Beijing Jiaotong University, Beijing 100044, China Nanjing Rongcai Transportation Technology Research Institute Co., Ltd, Nanjing 211121, China

Frontiers Science Center for Smart High-Speed Railway System, Beijing Jiaotong University, Beijing 100044, China

2025

10.23919/JCC.fa.2024-0415.202504

China communications

China communications

ISSN：
年,卷(期)：2025.22(4)
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