3G关键移动通信技术探讨毕业论文（可编辑）.doc

摘要 摘要3G技术的应用以及3G在我国的发展情况最后讲述了3G向4G演进趋势 关键词第三代移动通信无线传输技术智能天线功率控制技术 Abstract AbstractThe third generation 3 G mobile phone is believed to be the worlds largest potential industry about 3 G development strategy standardization work progress the latest technology and products market operation and so on high-profile case This paper briefly introduces the third generation mobile communication and its system principle and generalizes the IMT-2000 system of wireless transmission technology plan which mainly introduced the CDMA2000 system of related principles This paper will be divided into four most the first part of mobile communications made a brief introduction and reviewed the mobile communication development course of three generations The second part of the formal introduction to start the third generation mobile communication system including basic system model and the characteristics of the 3 G The third part of the 3 G technology is introduced the key technology including wireless transmission technology standard solution The fourth part involved in the graduation design to the CDMA2000 system the paper has briefly summarized and CDMA2000 1 x as an example to introduce the CDMA2000 system key technology then introduces the application of the 3 G and 3 G in the development of our country and about 3 G to 4 G evolution trend Key words the third generation mobile communication wireless transmission technology smart antenna power control technology 目 录 1绪论 4 11课题背景与意义 4 12移动通信的发展 5 13 2G和3G协同规划及优化 6 131协同规划2G和3G网络 6 132协同优化2G和3G网络 7 2第三代移动通信系统 8 21 3G的含义 8 22 IMT-2000系统模型 8 23 3G主要特点及目标 9 3IMT-2000无线传输技术方案 10 31各种技术方案的提出简介 10 32三种主流3G标准概述与比较 11 321三种主流3G标准概述 11 322三种主流3G标准主要技术性能比较 12 43G关键技术分析 13 41 CDMA技术 13 42 CDMA2000 1x的关键技术 13 43智能天线 14 431智能天线的自适应算法 14 432智能天线的优点 15 44 功率控制技术 15 45 3G技术的应用 16 46 3G技术发展方向 17 461 总体发展 17 462 业务发展 17 47 3G技术在我国的发展情况 17 48 4G的介绍 19 49 3G全球概况及向4G演进趋势 20 结论 22 参考文献 23 致谢 24 1绪论 随着移动通信的迅猛发展现有的包括GSM和IS-95通信