摘要
在CTCS-3级列控系统中,GSM-R无线通信系统负责承载车地间传输的关键列控数据,其传输能力与CTCS-3列控系统性能紧密相关。借助无线信道仿真机制模拟现场信道特性,分析无线传输性能,是研究GSM-R系统性能的重要手段。然而,在列车行驶过程中,终端移动速度、传播环境都会发生快速变化,无法使用传统电信领域的基于固定速度与场景的信道仿真机制。提出一种新型的GSM-R无线信道仿真机制,通过建立与铁路线路匹配的无线信道模型,并根据列车移动速度信息动态配置仿真输出特性,模拟车载电台在变化场景与运行速度下的传输性能,实现在CTCS-3级列控仿真系统中实时仿真GSM-R信道性能的目的。
In the CTCS-3 train control system, the GSM-R radio communication system is responsible for transmitting the key train-wayside train control data. Its transmission capability is closely related to the performances of the CTCS-3 system. Adopting the radio channel simulation system to simulate on-site channel performances and analyze radio transmission performances is an important means for studying GSM-R system performances. However, the travelling speed and transmission environment of the terminals will change rapidly during train operation, so the constant speed and events based simulation system in the traditional telecommunication field is not applicable. The paper puts forward a new GSM-R radio channel simulation system. The new system can simulate transmission performances of the onboard radio set in various events and speeds by establishing a match radio channel mode with the railway line and dynamically configuring simulation output performances based on train movement information, and it can realize the purpose of simulating in real time GSM-R channel performances in the CTCS-S simulation system.
出处
《铁路通信信号工程技术》
2013年第3期6-10,共5页
Railway Signalling & Communication Engineering
