扩频技术在数字蜂窝移动通信系统、卫星移动通信、室内无线通信和未来的个人通信中被广泛采用。
Spread Spectrum technique is widely used in digital cell-phone mobile communication system, satellite mobile communication, inside wireless communication and future personal communication.
研究了陆地集群无线通信（TETRA）数字集群移动通信系统的语音压缩编解码算法的基本原理。
This paper describes the basic theory of speech compression encoding and decoding algorithm in TETRA (terrestrial trunked radio) system.
本系统采用时分制设计思想，将GPS接收机、帧格式转换器、通讯模板和数字电台组成一个整体，构成无线通信网络并与电子地图相结合完成对移动装备的管理。
This system applies the time divided multiplexing method and integrates GPS receiver, translator, communication controller and mobile station to form a radio communication network. It works with el…
本系统采用时分制设计思想，将GPS接收机、帧格式转换器、通讯模板和数字电台组成一个整体，构成无线通信网络并与电子地图相结合完成对移动装备的管理。
This system applies the time divided multiplexing method and integrates GPS receiver, translator, communication controller and mobile station to form a radio communication network. It works with el…
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