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无线通信技术热点及其发展趋势
摘要
短短几十年的发展，我国的无线通信产业已经发展到第三代和第四代移动通信技术，多种无线通信技术都得到了广泛的应用。现阶段，无线通信领域主要包括3G、TD-LTE-Advanced、UWB、Wi-Fi、RFID等几大技术热点。本文首先介绍了无线通信技术的发展历程和特点，然后主要针对我国具有自主知识产权的TD-LTE-Advanced技术的产生及其特点进行了简要的分析。
TD-LTE-Advanced作为TD-SCDMA技术的演进，它吸纳了TD-SCDMA的主要技术元素，体现了我国通信产业界在宽带无线移动通信领域的最新自主创新成果。与第三代移动通信系统采用CDMA技术不同，TD-LTE采用OFDM和MIMO作为基本技术，大量采用了目前移动通信领域最先进的技术和设计理念。
关键词：无线通信，3G，LTE，TD-LTE-Advanced
学海无涯苦作舟！
Hot Spots in Wireless Communication Technology and
its Tendency of Development
Abstract
By only a few decades of development,the wireless industry in China has grown to the third and the fourth generation mobile communication technology and a variety of wireless communication technology have been widely used. At present, the hot spots in wireless communication technology is mainly include 3G, TD-LTE-Advanced, UWB, Wi-Fi, RFID,etc.This paper first introduces the development history of wireless communication technology and its characteristics,then it briefly analyse the development process and features of TD-LTE-Advanced,and our country has independent intellectual property rights for this technology.
As the evolution of TD-SCDMA Technology, TD-LTE-Advanced is one of the two candidates for next generation mobile communication system (IMT-Advanced). Compared with CDMA technology which is widely adopted by 3G system, TD-LTE introduces OFDM and MIMO as technical basis,together with many state of art advanced technologies and designs.
Key Words: Wireless Communication, 3G, LTE,TD-LTE-Advanced
学海无涯苦作舟！
目录
摘要 ............................................................................................................................ I Abstract ...................................................................................................................... II 目录 ......................................................................................................................... III 第一章 绪论 ........................................................................................................... 1
1.1 引言 ............................................................................................................ 1 1.2 技术背景概述 ............................................................................................ 1 第二章 无线通信技术的发展 ............................................................................... 3
2.1 无线通信的概念 ........................................................................................ 3 2.2 无线移动通信技术的发展历程 ................................................................ 3 2.3 无线通信技术与业务的发展趋势 ............................................................ 4 2.4 各个技术热点的简单介绍 ........................................................................ 5
2.4.1 3G ....................................................................................................................... 6 2.4.2 UWB ................................................................................................................... 7 2.4.3 RFID ................................................................................................................... 8 2.3.4 Wi-Fi ................................................................................................................... 9 2.4.5 TD-LTE-Advanced ........................................................................................... 10
第三章 TD-LTE-Advanced的产生历程及特点 ................................................. 11
3.1 TD-LTE-Advanced的概念 ....................................................................... 11 3.2 TD-LTE-Advanced的产生过程 ............................................................... 11 3.3 TD-LTE-Advanced的技术特点 ............................................................... 13
3.3.1 多址方式 ......................................................................................................... 13 3.3.2 帧结构 ............................................................................................................. 14 3.3.3 多入多出MIMO方案 .................................................................................... 16 3.3.4 快速的分组调度 ............................................................................................. 17 3.3.5 无线中继技术——Relay ................................................................................ 18 3.3.6 CoMP技术 ....................................................................................................... 18
3.4 TD-LTE-Advanced的测试工作 ............................................................... 20
学海无涯苦作舟！
3.4.1 TD-LTE-Advanced技术的测试进程 .............................................................. 20 3.4.2 TD-LTE-Advanced技术的性能评估 .............................................................. 21
3.5 小结 .......................................................................................................... 22 第四章 TD-LTE-Advanced技术的现状和前景分析 ......................................... 23
4.1 现状 .......................................................................................................... 23 4.2 前景和今后的工作 .................................................................................. 23 第五章 结束语 ..................................................................................................... 26 参考文献 ................................................................................................................. 27 谢辞 ......................................................................................................................... 28
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