This study presents a multiple-input multiple-output (MIMO) statistical channel model for vehicle-to-vehicle (V2V) line-of-sight (LOS) and non-LOS mobile communication system in a rectangular tunnel environment. In order to improve the V2V communication system performance, the authors introduced the elevation and azimuth angles in three-dimensional modelling based on the original literature. In the proposed reference channel model, the single-bounced scattering propagation path of electromagnetic signals is considered and it is assumed that the scatterers are randomly distributed on the rectangular tunnel wall. Starting from the statistical physical channel model, the time-variant transfer functions are derived. Thereafter, the analytical expressions of the space–time–frequency cross-correlation function, the space cross-correlation function, the temporal autocorrelation function, the frequency correlation function, and MIMO channel capacity are derived. The influence of model parameters on the performance of the V2V communication system is also analysed. This work provides an innovative approach to channel modelling in a rectangular tunnel mobile communication environment.

中文翻译：

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几何矩形隧道场景中车对车MIMO通信的信道建模

这项研究提出了一种用于矩形隧道环境中的车辆到车辆（V2V）视线（LOS）和非LOS移动通信系统的多输入多输出（MIMO）统计通道模型。为了提高V2V通信系统的性能，在原始文献的基础上，作者在三维建模中引入了仰角和方位角。在提出的参考信道模型中，考虑了电磁信号的单跳散射传播路径，并假设散射体随机分布在矩形隧道壁上。从统计物理信道模型开始，导出时变传递函数。此后，时空频率互相关函数，空间互相关函数的解析表达式，推导了时间自相关函数，频率相关函数和MIMO信道容量。还分析了模型参数对V2V通信系统性能的影响。这项工作为矩形隧道移动通信环境中的信道建模提供了一种创新方法。