A General 3D Non-Stationary Wideband Twin-Cluster Channel Model for 5G V2V Tunnel Communication Environments

Hao Jiang,Liang Wu,Jian Dang,Jie Zhou,Zhen Chen

doi:10.1109/access.2019.2942442

Abstract

In this paper, we propose a general three-dimensional (3D) non-stationary wideband two-cluster channel model for fifth-generation (5G) vehicle-to-vehicle (V2V) tunnel communication environments. In the proposed model, the received signal is constructed as a sum of the components with line-of-sight (LoS) propagations and the components via the two-cluster model, i.e., non-line-of-sight (NLoS) propagations; therefore, the model has the ability to sufficiently describe a variety of 5G wireless communication scenarios. In order to investigate the non-stationary properties of clusters, we introduce a birth-death algorithm to model the appearance and disappearance of clusters on both the array and time axes. The impacts of the non-stationary properties of clusters on the multiple-input and multiple-output (MIMO) channels are investigated via statistical properties, including spatial cross-correlation functions (CCFs), temporal spatial auto-correlation functions (ACFs), and Doppler power spectrum densities (PSDs). Numerical results of the proposed propagation properties fit the simulation results and prior measured results very well, which demonstrate that the proposed 3D model is able to describe the real 5G V2V communications in tunnel environments.

Highlights

In recent years, thorough investigation of the statistical propagation properties of fifth generation (5G) vehicleto-vehicle (V2V) scattering environments has attracted a great deal of research attention in order to develop wireless intelligent transportation systems [1], [2]
It is worth mentioning that the parameters k1 and k2 control the width of the von Mises distribution and influence the values of AAoD/elevation angle of departure (EAoD) and AAoA/elevation angle of arrival (EAoA), the angular parameters of the channel model will affect the NLoS propagation components, which further influence the distribution of statistical propagation properties
It can be seen that the distribution curves of the proposed Doppler spectrums drift over the time t, which is resulted from the movements of the mobile transmitter (MT) and mobile receiver (MR)

Summary

INTRODUCTION

Thorough investigation of the statistical propagation properties of fifth generation (5G) vehicleto-vehicle (V2V) scattering environments has attracted a great deal of research attention in order to develop wireless intelligent transportation systems [1], [2]. Liu et al proposed a 3D non-stationary theoretical geometric model for high-speed train tunnel communication environments by adopting the distributed antenna system It was reported in [19] and [20] that in high mobility communication scenarios, the channel statistical characteristics would vary over the movement time while the transmitter and receiver are not static. The authors in [22] and [23], respectively, proposed a 3D wideband twin-cluster channel model and a 2D multi-confocal ellipse channel model for massive MIMO communication scenarios, which studied the birth-death process to model non-stationary properties of clusters such as cluster appearance and disappearance on both the array and time axes.

SYSTEM CHANNEL MODEL

NON-STATIONARY PROPERTIES

NUMERICAL RESULTS AND DISCUSSIONS

CONCLUSION