随着第三代移动通信系统(3G)的出现，需构建一个能够解决3g将要面临的各种安全威胁的和谐同一的安全结构体系。
With the advent of 3g mobile systems a serious effort has been made to create a consistent security architecture based on the threats and risks a 3g system faces.
第三代移动通信系统(3G)可以提供各种各样的更为丰富多彩的业务。
The third-generation mobile communication systems (3g) can provide a variety of more colorful business.
因此，如何对第三代移动通信系统基站系统进行测试并使3g网络正常高效的运行已经成为许多3g厂商必须考虑和解决的一个重要问题。
Therefore, it is an important subject having to be considered and resolved by many 3g vendors that how to measure 3g Base Station System and maintain the network running properly and efficiently.
当前一个重要的契机就是第三代移动通信(3G)的运营。
At the moment, operation of the third generation mobile telecommunication (3g) comes as a significant turning point.
SIP协议已逐步成为下一代网络(NGN)的多媒体软交换系统和第三代移动通信(3 G)多媒体子系统域中的重要协议。
SIP gradually becomes the important protocol in the multimedia Softswitch system and 3g multimedia subsystem area of the next generation network (NGN).
传输分集是一种有效可行的对抗衰落的技术，有望在第三代移动通信系统中得到广泛应用。
Transmit diversity is an efficient technique to combat fading and it will be widely used in 3g mobile communication system.
本文以第三代移动通信系统作为平台，对混合ARQ技术做了深入的探讨和研究。
On the platform of 3g communication systems, this paper studies the hybrid ARQ techniques.
目前，第三代移动通信正在致力于开发智能天线系统。
Now, smart antenna system has being developed for the Third Generation Mobile Communication (3G).
CD MA通信系统由于具有容量大、软容量、软切换、频率利用率高、抗多径衰落能力强等优点而在第三代移动通信系统(3 G)中得到广泛应用。
The advantages of CDMA communication system in 3g are large capacity, soft capacity, soft handover, higher spectral efficiency and the ability to resist the effects of multi-path fading, and so on.
研究第二代移动通信系统向第三代移动通信系统的演进，深入研究WCDMA的网络体系结构及其接口规范。
Research the evolution of the mobile telecommunication system from 2g to 3g, the network architecture and interface specifications of WCDMA.
之后，思科和中国通信的高管将携手合作，为中国的企业客户提供一系列电信服务，包括数字视频和第三代移动通信(3 G)技术。
Executives from Cisco and CCS will then team up to provide business customers in China with a suite of telecoms services, including digital video and 3g technology.
本文着重研究了第三代移动通信系统的安全。
This paper is devoted to the security of 3g mobile communication system.
随着移动通信技术的迅猛发展，第三代移动通信（3G）技术已经逐步商业化。
With the rapid development of mobile communication technologies, the third generation mobile communication (3G) technology has been progressively commercialized.
随着移动通信技术的不断演进，第三代移动通信(3G)备受各届关注。
With the development of mobile communication technology, 3rd generation mobile communication (3g) was got more attention.
智能天线技术是第三代移动通信系统的关键技术之一，也是现在国内外热门的研究课题。
The Smart antenna is one of the key technology in the third generation(3G) system And it has been the present focuses in signal processing field.
对第三代移动通信系统所可能涉及的主要核心技术进行了展望。
The main 3G inherent features and possible network evolution architectures are discussed, and the key techniques that would be involved in the 3G system are addressed.
此外，中国移动通信标准的选择正处于关键时刻，可能影响到第三代移动通信技术的选用。
Furthermore, the choice of the mobile communications standards is at a critical moment, which may influence the choice of the 3g mobile communications technology.
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.
近年来，随着信息技术的飞速发展，3g浪潮在国内外风起云涌，第三代移动通信3g的时代已经来临。
In recent years, with the rapid development of information technology, 3g wave is surging at home and abroad.
第三代移动通信技术作为第二代移动通信技术的演进，其市场已初步显现。
The market of the third generation mobile telecommunication(3G), which is the evolution of the second generation mobile telecommunication(2G), has emerged gradually.
第三代移动通信系统已成为当今移动通信领域最受关注的问题。
Recently, IMT 2000, a 3G mobile telecommunication system, becomes the focus of the study in mobile communication field.
首先介绍了移动通信中常用的位置估计算法的基本原理及第三代移动通信采用的关键技术智能天线的基本工作原理和特性。
First, the basic principle of location estimation and the operation principle of smart antenna as the key technology of 3g were introduced.
同时，作者考虑到在第三代移动通信系统中，智能天线技术将得到实现，利用智能天线可以实现更精确的定位。
Location with TDOA is the most promising method in WCDMA system at present. Besides, smart antenna will be implemented in 3g, and location with smart antenna will achieve better precision.
因此在当前我国已经拥有第三代移动通信标准的有利条件下，我们研究与三代相关的关键技术，提高我国在通信市场的竞争力是很有意义的。
So, we'd better take the advantage of this and devote to the research of key technologies of 3g it is very significant to improve our country's ability of competition in the communication market.
该公司董事长兼首席执行官王晓初表示，在得到第三代移动通信(3 G)牌照之前，公司不会选定合作伙伴。
Wang Xiaochu, chairman and chief executive, said the company would not pick a partner until it was granted a 3g mobile licence.
介绍了移动通信中关键技术之一的智能天线技术，并就它的结构、算法以及在第三代移动通信中的应用进行了较全面的阐述。
Smart antenna is one of the key technologies of mobile communications. It describes the technology and focus on its architecture, algorithm and application to 3G mobile communication.
简要介绍了由我国提交并被国际电联接受的第三代移动通信标准TD-SCDMA系统及其特点。
This paper introduces the 3G standard TDSCDMA system and its characteristic briefly, which is submitted by our nation and had been accepted by ITU.
智能天线技术是第三代移动通信中的核心技术之一，最初主要应用于雷达和军用抗干扰通信。
As one of the key techniques for the 3g mobile communication, smart antenna initially was applied to radar and military anti-jamming communication.
智能天线技术是第三代移动通信中的核心技术之一，最初主要应用于雷达和军用抗干扰通信。
As one of the key techniques for the 3g mobile communication, smart antenna initially was applied to radar and military anti-jamming communication.
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