A 3D Cylinder MIMO Channel Model for 5G Macrocell Mobile-to-Mobile Communication Systems

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

doi:10.1109/access.2019.2937403

Abstract

For fifth-generation (5G) macrocell mobile-to-mobile (M2M) communication scenarios, we in this article propose a three-dimensional (3D) cylinder multiple-input and multiple-output (MIMO) channel model to reflect the distribution region of interfering objects in macrocell propagation environments, where the receiver (Rx) is located in the center point of the cylinder model, while the transmitter (Tx) is outside the scattering region. In the proposed model, the received signal is constructed as a sum of the components with line-of-sight (LoS) propagations and the components reflected by the objects with different energies, i.e., non-line-of-sight (NLoS) propagation components, which makes the model has the ability to sufficiently adaptable to a variety of 5G wireless communication scenarios. Furthermore, we investigate the statistical channel propagation properties, i.e., spatial cross-correlation functions (CCFs) of two different propagation components, temporal autocorrelation functions (ACFs), and Doppler power spectrum densities (PSDs), for different movement directions and time instants of the Tx and Rx. Numerical analytical results of the propagation properties fit the simulation results very well, which demonstrate that the proposed 3D model is practical for characterizing the real 5G macrocell M2M channels.

Highlights

Mobile-to-mobile (M2M) communications are a major research topic in the context of the fifth-generation (5G) intelligent transportation systems
Numerical studies have demonstrated that the computational complexities of geometry-based stochastic models (GBSMs) are extremely low while their accuracies are very high; geometry-based channel modeling has been widely used to study the statistical propagation properties of M2M channels in 5G communication scenarios [6]
With kp = (MT − 2p + 1)/2 kq = (MR − 2q + 1)/2, when the waves propagate from the Tx to the Rx undergo the components reflected by the interfering objects, i.e., NLoS propagations, the complex channel impulse response (CIR) can be expressed as [24]

Summary

INTRODUCTION

Mobile-to-mobile (M2M) communications are a major research topic in the context of the fifth-generation (5G) intelligent transportation systems. [7] and [8] proposed multi-bounced scattering model to study the statistical characteristics in V2V channels, which adopted an ellipse model to depict the distribution region of interfering objects in mobile radio communication environments. The authors in [13] proposed a 3D wideband MIMO channel model for vehicle-to-vehicle (V2V) communications in tunnel scenarios, which introduced a number of confocal semi-ellipsoid models to investigate the statistical characteristics in V2V channels for different propagation delays. We in this article propose a 3D cylinder MIMO channel model to reflect the distribution region of interfering objects in 5G macrocell M2M propagation environments, where the receiver (Rx) is located in the center point of the cylinder model, while the transmitter (Tx) is outside the scattering region.

SYSTEM CHANNEL MODEL

NUMERICAL RESULTS AND DISCUSSIONS

CONCLUSION