5G 是指第五代移动通信技术。
何为第三代移动通信技术的定义?。
What's the definition of the third generation mobile telecommunications?
摘要：4g指的是第四代移动通信技术。
Abstract: : 4g refers to the fourth generation mobile communication technology.
下一代移动通信系统的特征之一是异构网络的融合。
Heterogeneous network is one of the characteristics of next-generation mobile communication systems.
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.
下一代移动通信系统需要实现宽带传输，并能支持多种业务。
The next-generation mobile communication systems are expected to provide wideband transmission for mobiles and support multiple services.
本文研究了在第三代移动通信WCDMA系统中的智能天线应用。
In this paper, the applications of smart antennas in WCDMA system are discussed.
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.
软件无线电(SWR)技术是第三代移动通信系统和军用电台的发展趋势。
The SWR is a developing trend of the third generation mobile communication system and military radio.
第三代移动通信系统具有容量大，功耗低，通话质量高和保密性好等优点。
The third generation mobile communications systems have the advantage of large capacity, low consumed power, fine voice quality and confidentiality.
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.
就是这样的技术，它已经成为新一代移动通信技术的研究热点和关键技术。
MIMO (Multiple Input Multiple Output) is that technology, which has become the key technology in the next generation mobile communication.
在新一代移动通信系统中，频率选择性信道是系统所要面对的一个关键问题。
Frequency selective channel is one of the important problems in new generation mobile communications, and equalization technologies are applied to combat the influence of this channel.
它是支持多媒体业务传输的基础，也是与第二代移动通信系统的重要区别之一。
This scheme is the basis of supporting multimedia services, while it also causes high complexity and long process delay.
综述了用于下一代移动通信的光纤毫米波副载波通信技术(ROF)的研究进展。
Progresses of millimeter wave subcarrier fiber communication technology (ROF) for future generation mobile communication are summarized in this paper.
第一代移动通信系统（1G）是模拟制式的蜂窝移动通信系统，主要提供话音服务。
The first generation of mobile communication (1G) is cellular mobile communication based on analog signal, and it mainly provides voice service.
第一代移动通信系统(1g)是模拟制式的蜂窝移动通信系统，主要提供话音服务。
The first generation of mobile communication systems (1g) was analog cellular system for mobile communication standard with the main voice services.
多码道技术广泛地应用于第三代移动通信系统，灵活地为用户提供高速分组数据业务。
Multi-Code technique is widely used in the third generation mobile communication systems, and flexibly provides high-rate packet data services for users.
智能天线是第三代移动通信的关键技术之一，也是当前信号处理和通信领域的研究热点。
It is also one of the current focuses in the signal processing and communication field.
下一代移动通信系统是一个高频谱利用率、高传输速率，并可提供多种服务的无线网络。
The next generation mobile communication systems will have higher spectrum efficiency, higher transmission rate, and provide multimedia services to the users.
在第三代移动通信系统中，接入安全主要包括身份保密、实体认证和数据的安全三个方面。
In the third mobile communication systems, access security includes the confidentiality of the subscriber identity, entity authentication and the security of data.
介绍了第三代移动通信中的三个主要的标准和它们在国际国内标准化组织内的标准化情况。
This paper introduces the three main standards of the third mobile telecommunication, and their progress in the international and native standard organization.
据《金融时报》报道，美国斯普林特通信公司将推出首款应用第4代移动通信技术的智能手机。
Sprint Nextel will soon roll out the first smartphone with 4G service, Financial Times reported.
讨论了第3代移动通信系统的空中接口安全保护技术，包括数据机密性保护、数据完整性保护。
The air interface security technologies for the protection of data confidentiality and data integrity in 3g are discussed.
文章通过对WAP技术及其应用现状的分析，提出新一代移动通信综合业务信息服务系统解决方案。
Analysing WAP technology and its application status, this article provides a solution on new generation of integrated service information service system for mobile communication.
论述了智能天线技术在第三代移动通信中的重要作用，并重点介绍了自适应阵天线及智能天线的两种实现方案。
This paper tells the importance of smart antennas for the third generation mobile communication system and focuses on the adaptive array antennas.
CDMA2000和TD—SCDMA都已经成为了第三代移动通信的方案，而其中的一些关键技术基本一致。
WCDMA, CDMA2000 and TD-SCDMA are the scenarios on the third Generation mobile communications, some key techniques are consistent in these schemes.
CDMA2000和TD—SCDMA都已经成为了第三代移动通信的方案，而其中的一些关键技术基本一致。
WCDMA, CDMA2000 and TD-SCDMA are the scenarios on the third Generation mobile communications, some key techniques are consistent in these schemes.
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