论文标题
3D非平稳GBSM用于车辆可见光通信误差通道
A 3D Non-Stationary GBSM for Vehicular Visible Light Communication MISO Channels
论文作者
论文摘要
将可见光通信（VLC）技术用于车辆通信网络的潜力最近引起了很多关注。尚未对VLC通信系统进行适当设计和优化的基础，尚未对基础VLC渠道进行了充分的研究。车辆VLC链路障碍可能会对系统性能和容量产生重大影响。这些障碍包括光学无线通道失真和背景噪声。本文提出了一种新型的三维（3D）常规几何形状的随机模型（RS-GBSM），用于车辆VLC多输入单输出（MISO）通道。提出的3D RS-GBSM结合了两个球模型和椭圆缸模型。均考虑了视线（LOS）和单声（SB）组件。提出的模型通过使用Von-Mises-Fisher（VMF）分布共同考虑方位角和高程角度。基于提议的模型，通过模拟分析和验证了通信范围与接收的光功能之间的关系。通过与相应二维（2D）模型的接收光功率进行比较，研究了3D模型中高程角对接收光功率的影响。此外，还对背景噪声进行了建模，以评估系统的信噪比（SNR）。
The potential of using visible light communication (VLC) technologies for vehicular communication networks has recently attracted much attention. The underlying VLC channels, as a foundation for the proper design and optimization of vehicular VLC communication systems, have not yet been sufficiently investigated. Vehicular VLC link impairments can have a significant impact on the system performance and capacity. Such impairments include the optical wireless channel distortion and background noise. This paper proposes a novel three-dimensional (3D) regular-shaped geometry-based stochastic model (RS-GBSM) for vehicular VLC multiple-input single-output (MISO) channels. The proposed 3D RS-GBSM combines a two-sphere model and an elliptic-cylinder model. Both the line-of-sight (LoS) and single-bounced (SB) components are considered. The proposed model jointly considers the azimuth and elevation angles by using von-Mises-Fisher (VMF) distribution. Based on the proposed model, the relationship between the communication range and the received optical power is analyzed and validated by simulations. The impact of the elevation angle in the 3D model on the received optical power is investigated by comparing with the received optical power of the corresponding two-dimensional (2D) model. Furthermore, the background noise is also modeled to evaluate the system's signal-to-noise ratio (SNR).
