隧道环境下车地 LTE-M 系统时变信道仿真

doi:10.12066/j.issn.1007-2861.1893

Abstract

Abstract:

To build a physical channel test platform to validate reliability of time division long term evolution (TD-LTE) technology for rail transit communication based train control (CBTC), it is necessary to set up a train-ground communication channel model. In this paper, a time-frequency analysis method is used to study the Doppler effect of a wireless time-varying channel in tunnel environments, especially when the train passes through the rail-side base station. Doppler spread based on a multiplicative spread factor is proposed. A channel model suited to physical realization with RF circuits is established. Effectiveness of the method is verified by ray tracing.

Key words: time division long term evolution (TD-LTE), tunnel environment, time-variant channel, Doppler spread

CLC Number:

TN929.5

WU Huize, ZHENG Guoxin. Simulation of time-variant channel for train-ground LTE-M system in tunnel environment[J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(1): 45-55.

Figures/Tables 12

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References 23

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Simulation of time-variant channel for train-ground LTE-M system in tunnel environment

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