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分析未来可用于高速铁路的几种宽带接入网的实现方案,阐述了各自的优缺点与适用范围,现有的蜂窝系统需要改进才能满足未来高速铁路上的宽带需求。介绍未来可用于高速铁路宽带无线接入网的多方面的关键技术,阐述基本原理与应用于高速铁路环境下的特殊要求,在高速列车上实现宽带通信需要采用多项新技术。
In the future, several solutions for broadband access networks that can be used in high-speed railways are analyzed. Their respective advantages and disadvantages and their applicable scopes are expounded. Existing cellular systems need to be improved to meet the broadband demand in future high-speed railways. Describes the key technologies that can be applied to broadband wireless access networks of high-speed railways in the future, and expounds the basic principles and the special requirements applied to high-speed railways. Many new technologies are needed to realize broadband communications on high-speed trains.