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Channel measurements and models for high-speed train wireless communication systems in tunnel scenarios: a survey

Abstract

The rapid developments of high-speed trains (HSTs) introduce new challenges to HST wireless communication systems. Realistic HST channel models play a critical role in designing and evaluating HST communication systems. Due to the length limitation, bounding of tunnel itself, and waveguide effect, channel characteristics in tunnel scenarios are very different from those in other HST scenarios. Therefore, accurate tunnel channel models considering both large-scale and small-scale fading characteristics are essential for HST communication systems. Moreover, certain characteristics of tunnel channels have not been investigated sufficiently. This article provides a comprehensive review of the measurement campaigns in tunnels and presents some tunnel channel models using various modeling methods. Finally, future directions in HST tunnel channel measurements and modeling are discussed.

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Acknowledgements

The authors would like to acknowledge the support from the International S&T Cooperation Program of China (Grant No. 2014DFA11640), EU H2020 ITN 5G Wireless Project (Grant No. 641985), EU FP7 QUICK Project (Grant No. PIRSES-GA-2013-612652), EPSRC TOUCAN Project (Grant No. EP/L020009/1), National Natural Science Foundation of China (Grant No. 61371110), and China Scholarship Council (Grant No. 201506450042).

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Correspondence to Cheng-Xiang Wang.

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Conflict of interest The authors declare that they have no conflict of interest.

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Liu, Y., Ghazal, A., Wang, C. et al. Channel measurements and models for high-speed train wireless communication systems in tunnel scenarios: a survey. Sci. China Inf. Sci. 60, 101301 (2017). https://doi.org/10.1007/s11432-016-9014-3

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Keywords

  • 5G
  • high-speed train (HST)
  • tunnel scenario
  • tunnel channel measurement
  • tunnel channel model
  • non-stationary statistical property