Novel Multi-Mobility V2X Channel Model in the Presence of Randomly Moving Clusters

Abstract

Considering mobile terminals with time-varying velocities and randomly moving clusters, a novel multi-mobility non-stationary wideband multiple-input multiple-output (MIMO) channel model for future intelligent vehicle-to-everything (V2X) communications is proposed. To describe the non-stationarity of multi-mobility V2X channels, the proposed model employs a time-varying acceleration model and a random walk process to describe the motion of the communication terminals and that of the scattering clusters, respectively. The evolution of the model parameters over time and the stochastic characteristics of the phase shift caused by the time-varying Doppler frequency are derived. The proposed model is sufficiently general and suitable for characterizing various V2X communication scenarios. Under two-dimensional (2D) non-isotropic scattering scenarios, the important channel statistical properties of the proposed model are derived and thoroughly investigated. The impact of the random walk process of the clusters and the velocity variations of the communication terminals on these statistical properties is studied. The simulation results verify that the proposed model is useful for characterizing V2X channels.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Channel Models; Computational Modeling; MIMO Communication; Non-Stationary V2X Channel Model; Random Walk Process; Statistical Properties; Time-Varying Doppler Frequency; Trajectory; Vehicle-To-Everything; Velocity Variations; Wideband; Wireless Communication

International Standard Serial Number (ISSN)

1536-1276; 1558-2248

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2021 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

08 Jan 2021

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