Vehicle-to-vehicle communication plays a strong role in modern wireless communication systems, appropriate channel models are of great importance in future research, and propagation environment with slope is one special kind. In this study, a novel three-dimensional nonstationary multiple-input multiple-output channel model for the sub-6 GHz band is proposed. This model is a regular-shaped multicluster geometry-based analytical model, and it combines the line-of-sight component and multicluster scattering rays as the nonline-of-sight components. Each cluster of scatterers represents the influence of different moving vehicles on or near a slope, and scatterers are, respectively, distributed within two spheres around the transmitter and the receiver. In this model, it is considered that the azimuth and elevation angles of departure and arrival are jointly distributed and conform to the von Mises–Fisher distribution, which can easily control the range and concentration of the scatterers within spheres to mimic the real-world situation well. Moreover, the impulse response and the autocorrelation function of the corresponding channel is derived and proposed; then, the Doppler power spectrum density of the channel is simulated and analyzed. In addition, the nonstationary characteristics of the presented channel model are observed through simulations. Finally, the simulation results are compared with measurement data in order to validate the utility of the proposed model.

中文翻译：

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斜坡上车辆间通信的非平稳3D MIMO解析通道模型

车对车通信在现代无线通信系统中起着重要的作用，适当的信道模型在未来的研究中非常重要，倾斜的传播环境是一种特殊的类型。在这项研究中，提出了一种适用于6 GHz以下频段的新型三维非平稳多输入多输出信道模型。此模型是基于规则形状的多聚类几何分析模型，它将视线成分和多聚类散射射线组合为非视线成分。每个散射体簇代表不同的行驶车辆在斜坡上或附近的影响，并且散射体分别分布在发射器和接收器周围的两个球体内。在这个模型中 可以认为，出发和到达的方位角和仰角是共同分布的，并且符合冯·米塞斯·费舍尔分布，可以轻松地控制球体内散射体的范围和集中度，从而很好地模拟现实情况。并推导了相应信道的脉冲响应和自相关函数。然后，对信道的多普勒功率谱密度进行了仿真和分析。另外，通过仿真观察了所提出的信道模型的非平稳特性。最后，将仿真结果与测量数据进行比较，以验证所提出模型的实用性。可以轻松控制球体内散射体的范围和浓度，从而很好地模拟现实情况。并推导了相应信道的脉冲响应和自相关函数。然后，对信道的多普勒功率谱密度进行了仿真和分析。另外，通过仿真观察了所提出的信道模型的非平稳特性。最后，将仿真结果与测量数据进行比较，以验证所提出模型的实用性。可以轻松控制球体内散射体的范围和浓度，从而很好地模拟现实情况。并推导了相应信道的脉冲响应和自相关函数。然后，对信道的多普勒功率谱密度进行了仿真和分析。另外，通过仿真观察了所提出的信道模型的非平稳特性。最后，将仿真结果与测量数据进行比较，以验证所提出模型的实用性。通过仿真观察了所提出的信道模型的非平稳特性。最后，将仿真结果与测量数据进行比较，以验证所提出模型的实用性。通过仿真观察了所提出的信道模型的非平稳特性。最后，将仿真结果与测量数据进行比较，以验证所提出模型的实用性。