标题： 5G 毫米波频段铁路用例信道模型及太赫兹路径 显示英文标题

标题： 5G Channel Models for Railway Use Cases at mmWave Band and the Path Towards Terahertz

摘要： 高速列车是第五代（5G）移动通信和“智能铁路交通”愿景中最重要的场景之一，在这种场景中，将需要高达几个GHz带宽的高速率无线连接。 这是探索毫米波（mmWave）频段的强大动力。 在本文中，我们确定了主要挑战，并在为铁路用例开发实际的5G毫米波信道模型方面取得了进展。 为了应对在信道模型中包含铁路特征的挑战，我们定义了参考场景，以帮助在毫米波频段下对铁路用例的信道模型进行参数化。 用于验证模型的仿真和后续测量反映了铁路物体的详细影响以及仿真的准确性。 最后，我们指出了通往由太赫兹（THz）通信推动的完整智能铁路交通愿景的未来方向。 显示英文摘要

摘要： High-speed trains are one of the most relevant scenarios for the fifth-generation (5G) mobile communications and the "smart rail mobility" vision, where a high-data-rate wireless connectivity with up to several GHz bandwidths will be required. This is a strong motivation for the exploration of millimeter wave (mmWave) band. In this article, we identify the main challenges and make progress towards realistic 5G mmWave channel models for railway use cases. In order to cope with the challenge of including the railway features in the channel models, we define reference scenarios to help the parameterization of channel models for railway use at mmWave band. Simulations and the subsequent measurements used to validate the model reflect the detailed influence of railway objects and the accuracy of the simulations. Finally, we point out the future directions towards the full version of the smart rail mobility which will be powered by terahertz (THz) communications.