SCIENCE CHINA Information Sciences, Volume 60, Issue 8: 082304(2017) https://doi.org/10.1007/s11432-016-9004-4

3D non-stationary wideband circular tunnel channel models for high-speed train wireless communication systems

• AcceptedNov 30, 2016
• PublishedMar 13, 2017
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Abstract

This paper proposes three-dimensional (3D) non-stationary wideband circular geometry-based stochastic models (GBSMs) for high-speed train (HST) tunnel scenarios. Considering single-bounced (SB) and multiple-bounced (MB) components from the tunnel's internal surfaces, a theoretical channel model is first established. Then, the corresponding simulation model is developed using the method of equal volume (MEV) to calculate discrete angular parameters. Based on the proposed 3D GBSMs, important time-variant statistical properties are investigated, such as the temporal autocorrelation function (ACF), spatial cross-correlation function (CCF), and space-Doppler (SD) power spectrum density (PSD). Results indicate that all statistical properties of the simulation model, verified by simulation results, can match well those of the theoretical model. The statistical properties of the proposed 3D GBSMs are further validated by relevant measurement data, demonstrating the flexibility and utility of our proposed tunnel GBSMs.

Acknowledgment

This work was supported by 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), China Scholarship Council (Grant No. 201506450042), and in part by National Natural Science Foundation of China (Grant No. 61210002), Hubei Provincial Science and Technology Department (Grant No. 2016AHB006), and Fundamental Research Funds for the Central Universities (Grant No. 2015XJGH011).

• Figure 1

(Color online) HST circular tunnel wireless communication system.

• Figure 2

(Color online) 3D cylinder-shape GBSM for circular tunnel scenarios.

• Figure 3

(Color online) The non-stationary circular tunnel channel coefficients generation procedure.

• Figure 4

(Color online) Absolute values of the time-variant spatial CCF of the proposed HST tunnel channel model with time-variant angles at different time instants.

• Figure 5

(Color online) Comparison among the time-variant ACFs of the theoretical model, simulation model, and simulation results.

• Figure 6

(Color online) Absolute values of the time-variant ACF of the proposed HST tunnel channel model with/without LoS component at different time instants.

• Figure 7

(Color online) Comparison of time-variant SD PSDs of the theoretical and simulation models for different $k$ at different time instants.

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