In this paper, an extension spatial channel model (SCM) for vehicle-to-vehicle (V2V) communications is proposed. To efficiently illustrate the real-world scenarios and reflect nonstationary properties of V2V channels, all effective scattering objects are subdivided into three categories of clusters according to the relative position of clusters. Besides, a birth-death process is introduced to model the appearance and disappearance of clusters on both the array and time axes. Their impacts on V2V channels are investigated via statistical properties including correlation functions. Additionally, a closed-form expression of channel impulse response (CIR) is derived from an extension SCM and cluster-based models. Furthermore, the spatial and frequency statistical properties of the reference model are thoroughly investigated. Finally, simulation results show that the proposed SCM V2V model is in close agreement with previously reported results, thereby validating the accuracy and effectiveness of the proposed model.

中文翻译：

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车对车通信环境中扩展空间通道模型的仿真与分析

本文提出了一种用于车对车（V2V）通信的扩展空间信道模型（SCM）。为了有效地说明现实情况并反映V2V通道的非平稳特性，根据群集的相对位置，将所有有效的散射对象细分为三类群集。此外，还引入了生死过程以对簇在时间轴和时间轴上的出现和消失进行建模。通过统计特性（包括相关函数）研究了它们对V2V频道的影响。此外，从扩展SCM和基于群集的模型中得出信道冲激响应（CIR）的闭式表达式。此外，彻底研究了参考模型的空间和频率统计特性。最后，