A 3D Non-stationary MmWave Channel Model for Vacuum Tube Ultra-High-Speed Train Channels

TL;DR

This paper introduces a 3D non-stationary mmWave channel model for vacuum tube ultra-high-speed trains, highlighting unique channel characteristics and effects of waveguide and wall roughness on signal propagation.

Contribution

It proposes a novel geometry-based stochastic model for UHST channels in vacuum tubes, incorporating waveguide effects and wall roughness impacts, and analyzes their statistical properties.

Findings

Multipath effects are more pronounced than tunnels but less than traditional HST.

Channel characteristics differ significantly from existing HST and tunnel scenarios.

Insights provided for future vacuum tube UHST wireless communication research.

Abstract

As a potential development direction of future transportation, the vacuum tube ultra-high-speed train (UHST) wireless communication systems have newly different channel characteristics from existing high-speed train (HST) scenarios. In this paper, a three-dimensional non-stationary millimeter wave (mmWave) geometry-based stochastic model (GBSM) is proposed to investigate the channel characteristics of UHST channels in vacuum tube scenarios, taking into account the waveguide effect and the impact of tube wall roughness on channel. Then, based on the proposed model, some important time-variant channel statistical properties are studied and compared with those in existing HST and tunnel channels. The results obtained show that the multipath effect in vacuum tube scenarios will be more obvious than tunnel scenarios but less than existing HST scenarios, which will provide some insights for future research on vacuum tube UHST wireless communications.