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介绍了第四代移动通信技术的历史和发展现状,分析了第四代移动通信技术的特点,对第四代移动通信技术中的正交频分复用技术、多输入多输出系统技术、软件无线电技术、切换技术、基于IP的核心网技术的原理进行了阐述。
The fourth generation mobile communication technology’s history and development status are introduced. The characteristics of the fourth generation mobile communication technology are analyzed. The orthogonal frequency division multiplexing technology, multi-input multiple-output system technology, software Radio technology, switching technology, IP-based core network technology principles are described.