一种用于街角场景的非平稳VVLC MIMO信道模型
A Non-Stationary VVLC MIMO Channel Model for Street Corner Scenarios
摘要：
近年来，可见光通信（VLC）技术作为射频（RF）技术的替代和补充，其应用潜力引起了人们的关注。对VLC信道的研究是设计VLC通信系统的基础。提出了一种适用于车辆可变长信道（VVLC）多输入多输出（MIMO）信道的非平稳几何街角模型。该模型考虑了车辆速度和方向的变化。散射体的类别包括固定散射体和移动散射体（MS）。基于所提出的模型，我们推导出信道的冲激响应（CIR）和探索的VVLC信道的统计特性。研究了变VLC信道的信道增益和均方根时延扩展。此外，还研究了流速变化对模型统计特性的影响。该信道模型可用于指导未来的车辆到基础设施（V2I）和车辆到车辆（V2V）光通信系统的设计。
英文摘要：
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.
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