毕业论文《无线宽带接入技术及应用》.doc

毕 业 设 计（论 文） 设计（论文）题目:无线宽带接入技术及应用 摘要 对无线宽带网的研究有利于对通信行业技术进行更加全面的了解和认识，在以前宽带无线接入网技术被广泛且基本只应用于“最后一公里”的接入。但是随着更多机遇的介入，使得无线宽带接入网利用其传统的MMDS和LMDS技术应用于了移动,无线,宽带城域网络中。并且许多技术研究组织对其进行完善和修改，不断推出新的协议，使其在物理层,接入规范,媒体接入控制层,安全保密等方面都进行了扩展和规范。所以在此论文中对其无线局域网技术,WIMAX,IEEE802.16-2004和IEEE802.16-2005接口和新的无线接入技术进行了研究，在研究之中我发现许多技术之间的相互弥补或相互制约都会给无线宽带技术带来实际性的变化，例如想要高质量的通信，无疑对传输距离，环境要求会造成损失和影响，对其的研究应考虑多方面条件，在不同情况之下采取的不同技术和设备，所以在此研究之中采取了从结构，规格，技术，应用原理上进行了解。通过对其多方面的研究，越发的认为无线宽带技术是以后一种必不可少，更加重要的技术，越来越深入生活，并会从中给大家带来方便，作为以后长远的发展，低成本，高效率，易维护将成为关键，所以对其的分析望大家予以指导和思考。 关键词 WiMAX 无线宽带接入网 IEEE802.16 媒质接入控制层 物理层 Abstract The research on wireless broadband communications industry can promote a more comprehensive understanding and learning of the technologies. Previously, wireless access network is only applied to the last one mile access extensively and fundamentally. However, with the intervention of more opportunities, wireless broadband access network is applying its traditional MMDS and LMDS technologies to the mobile, wireless, broadband metropolitan networks. With the improvement and modification of number of technical research organizations and new protocols introduced, the physical layer, access specification, the media access control layer, security and other aspects are extended and standardized. So the Wireless LAN technology, WIMAX, IEEE802.16-2004, IEEE802.16-2005 Interface and other new wireless access technologies was mainly studied in the paper. The mutual complements or restraints between these technologies will lead substantial changes to wireless broadband technology. For example, there is no doubt that it will have great loss and impact on transmission distance and environmental requirements if high-quality communications are required. The study should be considered many of its conditions. Different techniques and equipments should be taken under different conditions. The structures, formats, technologies and application principles mainly were studied to understand it more comprehe