本文讨论了数字移动通信系统对调制技术的要求，着重分析了数字线性调制及其改进方案。
The requirements for modulation techniques to digital mobile communication system are presented and the improved lineally digital modulation schemes are also briefly described.
本课题的任务是为采用CDMA技术的数字移动通信系统设计一个应用于基站控制器（BSC）内部的高速数据交换网络。
The task of this research is to design a high speed data switch network which is used in a base station controller (BSC) of a digital mobile communication system based on CDMA technique.
基于TETRA数字集群移动通信系统开发的TETRA终端，通过数据业务可以发送和接收状态消息和短数据业务消息，利用短数据业务完成终端导航定位功能。
Terminal based on TETRA digital trunking mobile communication system could send and receive status and short data service message, and achieve navigation and location through short data service.
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.
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.
ETSI发布的欧洲新一代全数字集群系统TETRA是当今最先进的移动通信系统之一。
The latest generation of the digital trunked system TETRA, which is defined by the European Telecommunications Standards Institute (ETSI), is one of the most advanced mobile communication systems.
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.
针对数字集群移动通信系统，提出一种新的随机预约控制方式，减小了预约分组信号冲突发生，提高了系统的吞吐量。
A kind of modified packet reservation random access protocol for digital trunking systems is studied, which could reduce collisions among packet reservations and increase the system's throughout.
本发明公开了一种用于无线移动通信系统的有限冲激响应数字滤波器。
The present invention discloses a limited impulse response digital filter for wireless mobile communication system.
数字波束形成是未来移动通信系统中的研究热点，本文着重对数字波束形成中的信号分析研究。
Digital beamforming is the research focus of mobile communication system nowadays. This dissertation makes a study of the signal analysis in digital beamforming.
而作为移动通信核心技术之一的数字调制技术是实现高速、高效的移动通信系统的重要保证。
As the core mobile communications technology, one of the digital modulation technique is to achieve high-speed, highly efficient mobile communication system and an important guarantee.
本文重点研究智能天线系统的关键技术之一——自适应数字波束形成(DBF)算法在DS - CD MA移动通信系统中的应用。
This thesis places emphasis on one of the key techniques of smart antenna - adaptive digital beam forming (DBF) algorithm and its applications in the DS-CDMA mobile telecommunications systems.
第二代移动通信系统(2g)是数字移动系统，能提供低速率数据业务。
Second generation mobile communication system (2g) is digital cellular system which can provide low-speed data business.
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.
先进的数字移动通信技术、sdh光通信系统技术、密集波分复用技术得到广泛采用，宽带综合业务数字网、at m宽带交换系统等高新技术正在网上试验。
Advanced technologies like digital mobile communications, SDH, dense WDM, etc. have found wide application and high and new technologies like B-ISDN and ATM are on trial over the network.
近年来，随着通信的飞速发展，作为专用移动通信系统的数字集群通信系统的研究也变得越来越重要了。
Recent years, with the rapid development of communication, the research of digital trunked radio communication system becomes more and more important.
基于移动通信及移动计算技术，提出了车间数字化制造系统中“数字化人”的概念。
By utilizing the mobile communication and mobile computation technology, this paper put forward the concept of digital human (DM) and built DM prototype.
CAS通信自动化系统，综合布线、宽频网路、移动电话楼内覆盖系统、有线电视及数字程控电话系统。
CAS (communication Automation system) includes cabling system, broadband network system, mobile phone coverage system, cable TV and digital communication system.
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.
全球移动通信系统，使用最广泛的数字手机系统和欧洲事实上的无线电话标准。
Global system for mobile communications, the most widely used digital mobile phone system and the DE facto wireless telephone standard in Europe.
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…
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.
数字集群移动通信系统作为专用移动通信的高级阶段，受到了广泛的关注。
Digital trunk mobile system is the advanced level of the special mobile communication, and it has attracted attention abroad.
而作为移动通信核心技术之一的数字调制技术是实现高速、高效的移动通信系统的重要保证。
As the core mobile communications technology, one of the digital modulation technique is to achieve high-speed, highly efficient mobile communication syst and an important guarantee.
本文第一章介绍了第三代移动通信系统的现状，分析软件无线电中的数字下变频技术的研究现状，简单介绍了WCDMA。
The first chapter introduce the 3G actuality , analyze the digital-down converting's research actuality in software radio and introduce WCDMA briefly.
本文第一章介绍了第三代移动通信系统的现状，分析软件无线电中的数字下变频技术的研究现状，简单介绍了WCDMA。
The first chapter introduce the 3G actuality , analyze the digital-down converting's research actuality in software radio and introduce WCDMA briefly.
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