地下轨道交通无线信息通信与关键技术

摘要

The requirements and characteristics of access unit of wireless communication system for the underground rail transit are elaborated and researched. The access modes and indexes of the existing wireless access technologies are introduced and analyzed. The wireless access technology which will be used probably is discussed in combination with the existing problems.%阐述了地下轨道交通（以下简称地铁）无线通信系统接入系统的需求，研究了地铁无线接入系统的特点，介绍和分析了现有无线接入技术的接入方式和具体指标，最后结合当下存在的问题讨论了未来地铁宽带无线接入可能使用的技术。