介绍了用于数字蜂窝系统的一些主要语音编码标准。
An introduction is given to some commoanly used speech coding standards in digital cellular systems.
本文以IS- 95系统为例，分析了该系统在围绕提高容量方面所采用的几项关键技术，从中反映出了CD MA(码分多址)数字蜂窝系统的一些特点。
In this paper, we analyse some key technology for increasing the capacity in IS-95 CDMA sys-tem, which mirror some features of CDMA digital cellular systems.
解决这些问题的方法是开发新一代数字蜂窝移动通信系统。
To solve these problems is to develop a new generation of digital cellular mobile communication system.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。
IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
着重分析了在码分多址（CDMA）数字蜂窝移动通信系统中的三种用户检测技术。
This paper mainly analyzes three user detection approaches in digital cellular mobile communication systems based on CDMA.
该流程可作为CD MA数字蜂窝移动通信系统优化的一般流程或参考流程。
This procedure can be used as a fundamental procedure or a reference referential procedure for optimization of CDMA digital cellular mobile communication system.
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.
扩频技术在码分多址通信中的应用产生了DS/CDMA数字蜂窝移动通信系统。
The DS/CDMA digital mobile communication system is based on Spread-spectrum technique and CDMA technique.
CDMA数字蜂窝移动通信系统由于其具有良好的通信性能，已成为近年来国际上研究的热点之一。
CDMA digital cellular mobile system has remarkable communication performance. It has been one of the hottest research topics in recent years.
蜂窝数字分组数据（CDPD）系统是基于模拟蜂窝电话网的无线分组数据通信系统。
The cellular digital packet data(CDPD) system is a wireless packet communication system based on analog cellular telephone networks.
从e - mail到蜂窝通讯系统，从安全网页到数字现金，加密算法已经是当今信息系统不可或缺的一部分。
From email to cellular communications, from secure Web access to digital cash, cryptography is an essential part of today's information systems.
从e - mail到蜂窝通讯系统，从安全网页到数字现金，加密算法已经是当今信息系统不可或缺的一部分。
From email to cellular communications, from secure Web access to digital cash, cryptography is an essential part of today's information systems.
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