A Non-Stationary VVLC MIMO Channel Model for Street Corner Scenarios

TL;DR

This paper introduces a non-stationary VVLC MIMO channel model for street corner scenarios, accounting for vehicle dynamics and scatterers, to aid the design of vehicular optical communication systems.

Contribution

It proposes a novel geometric non-stationary model for vehicular VLC channels that considers vehicle movement and scatterer types, deriving key statistical characteristics.

Findings

Channel gain and RMS delay spread are characterized.

Velocity changes significantly affect channel statistics.

Model supports future V2I and V2V VLC system design.

Abstract

In recent years, the application potential of visible light communication (VLC) technology as an alternative and supplement to radio frequency (RF) technology has attracted people's attention. The study of the underlying VLC channel is the basis for designing the VLC communication system. In this paper, a new non-stationary geometric street corner model is proposed for vehicular VLC (VVLC) multiple-input multiple-output (MIMO) channel. The proposed model takes into account changes in vehicle speed and direction. The category of scatterers includes fixed scatterers and mobile scatterers (MS). Based on the proposed model, we derive the channel impulse response (CIR) and explore the statistical characteristics of the VVLC channel. The channel gain and root mean square (RMS) delay spread of the VVLC channel are studied. In addition, the influence of velocity change on the statistical characteristics of the model is also investigated. The proposed channel model can guide future vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) optical communication system design.