Modern railway services are required to deliver good quality services to the passenger throughout the whole journey. These include improved performances, safety, and reduce delays. There is also the requirement for in‐train customer experience such as infotainment and access to reliable communication systems. The railway industry has employed different types and generations of communication systems in recent times. Signaling systems were used at the early stage of the railway services. Today, communication systems such as the second‐generation communication system, also known as the global system for mobile communications (GSM), the Third‐generation (3G) and the Fourth‐generation (4G) are utilized in the railway industry. In this paper, we present a brief history of railway communication systems, their features and applications. In addition, we discuss the technical challenges and potential solutions of in‐train communication systems and how data can be distributed on‐board and between the train coaches using state of the art and hybrid communication technologies.

中文翻译：

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高速铁路通信系统调查

现代铁路服务需要在整个旅程中为乘客提供优质的服务。这些包括改进的性能，安全性和减少延迟。还需要培训客户体验，例如信息娱乐和访问可靠的通信系统。铁路行业最近采用了不同类型和一代的通信系统。信号系统用于铁路服务的早期阶段。如今，铁路行业使用了诸如第二代通信系统（也称为全球移动通信系统（GSM），第三代（3G）和第四代（4G））之类的通信系统。在本文中，我们简要介绍了铁路通信系统的历史，其功能和应用。此外，