A Modified Geometry-Based MIMO Channel Model for Tunnel Scattering Communication Environments

Denghong Tang, Xiaoli Xi and Qianying Fan
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Denghong Tang: Institute of Advanced Navigation and Electromagnetics, Xi’an University of Technology, Xi’an 710048, China
Xiaoli Xi: Institute of Advanced Navigation and Electromagnetics, Xi’an University of Technology, Xi’an 710048, China
Qianying Fan: Meteorological Bureau of Shanxi Province, Xi’an 710014, China

Energies, 2022, vol. 15, issue 14, 1-9

Abstract: In this study, a modified non-stationary geometry-based scattering model for tunnel vehicle-to-vehicle (V2V) multiple-input multiple-output Ricean fading channels is presented. The proposed channel introduces non-line-of-sight three-dimensional multi-bounced scattering propagation paths under an assumption of equivalent scattering points to depict the tunnel environments, in which the scatterers are randomly distributed on the semi-cylindrical tunnel wall (i.e., cable racks, jetfans, road signs, lighting facilities). Furthermore, the time-varying channel statistics (i.e., the space and frequency correlation functions) resulting from the relative movement between the mobile transmitter and mobile receiver are analyzed. Finally, numerical results show that the space correlations of the proposed model significantly decrease when the multi-bounced scattering rays are taken into account; moreover, when the velocity and the antenna angle ? R increase, the correlations decrease therewith, which exhibits good agreement with the existing V2V scattering channel models and measured data in a real tunnel environment, demonstrating the rationality of the underlying channel model.

Keywords: tunnel wireless communications; multi-bounced scattering; time-varying correlation functions; geometry-based models (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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