基于cdma2000系统的高速铁路网络规划和优化分析word格式论文.docxVIP

优秀毕业论文 精品参考文献资料 Abstract With the construction and development of the high-speed railway, the high-speed railway has profoundly changed the way people travel. People enjoy the high speed, at the same time, they find that the existing network performance is not satisfactory in the high-speed railway scene. Addition to optimize the existing network, deployment of a better network in place of the existing network is also a good method to improve the users’experience. According to the characteristics of the high-speed rail coverage, the thesis focuses on analysis of CDMA2000 network coverage in the high-speed environment and presents a planning and optimization process of CDMA2000 network in the scene of high-speed railway. Firstly, the thesis introduces the basic principles and core technology of CDMA2000 systems and analyzes the the particularity of CDMA2000 network coverage in the high-speed environment. It provides a theoretical basis for further research. Secondly, the thesis studies the CDMA2000 network planning and optimization technology of high-speed rail and elaborates network planning and optimization processes, radio propagation models in the high-speed environment, link budget and networking. And according to the characteristics of various scenes along the high-speed rail, we do different planning by different terrain. Finally, according to an intercity railway planning and design scheme of CDMA2000 network in detail, based on the site survey, we use the Enterprise (3G) simulation software to simulate the scheme, and simulation results verify the feasibility of the planning scheme. To further understand the coverage of an intercity railway network, we test the actual network by the dial test and EVDO download test. And the analysis results of the test data show that an intercity railway network coverage of CDMA2000 is pretty good and achieves the desired effect. Key words: High-speed railway, CDMA2000, Network planning, Network optimization  PAGE 4 目录