宽带接入网技术设计（毕业学术论文设计）.doc

精品 PAGE 精品 摘 要 HFC网络宽带综合业务为进入家庭建立了一个可靠的通道，解决了信息高速公路最后一公里的瓶颈。 本文首先对宽带接入网的定义、主要技术及其主要优势作了探讨，接下来又对HFC宽带接入网的技术问题进行了分析讨论，包括HFC接入网的定义及其主要技术，重点研究了HFC接入网回传通道的噪声问题，以及为解决噪声问题而采用的集中分配式HFC网络和S-CDMA电缆调制解调器等。最后对宽带接入网建设的一些问题进行了探讨，对HFC和LAN接入以及ADSL技术作了比较，并结合我国的接入网状况，提出了HFC宽带接入应采用的方案。 关键词 宽带接入网 HFC Cable modem S-CDMA Abstract HFC broad band integration operation provides a reliable channel to family, solves the bottleneck problem in the last part of information highway. First this paper mainly makes the study to the definition of Broadband access network, and main technique and the main advantages. And then it analyses and discusses the connection technology of HFC broad band. The HFC mainly includes the definition and its techniques. It emphasizes on the noise of HFC broad band in backhaul channel, and also studies the applied HFC broadband and S-CDMA cable model in order to wipe out the noise. After the discussion of the problems in the HFC broad band construction, it compares the HFC with the technique of ADSL and connection of LAN, and then falls together with Chinese band connection status, HFC broad band connection should be applied in this way. Keywords Broadband Access Network Hybrid Fiber Coax Cable Modem Synchronous division multiple access 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc171850822 摘 要 PAGEREF _Toc171850822 \h I HYPERLINK \l _Toc171850823 Abstract PAGEREF _Toc171850823 \h II HYPERLINK \l _Toc171850824 第1章 绪 论 PAGEREF _Toc171850824 \h 1 HYPERLINK \l _Toc171850825 1.1 宽带接入网的定义 PAGEREF _Toc171850825 \h 2 HYPERLINK \l _Toc171850826 1.2 宽带接入网的主要技术 PAGEREF _Toc171850826 \h 4 HYPERLINK \l _Toc171850827 1.3 宽带接入网的优势 PAGEREF _Toc171850827 \h 5 HYPERLINK \l _Toc171850828 第2章 HFC宽带接入网技术简述 PAGEREF _Toc171850828 \h 6 HYPERLINK \l _Toc171850829 2.1 HFC网的组成与基本原理 PAGEREF _Toc171850829 \h 7 HYPERLINK \l _Toc171850830 2.2 HFC接入网的频段分配 PAGEREF _Toc171850830 \h 9 HYPERLINK \l _Toc171850831 2.3 HFC网的拓扑结构 PAGEREF _Toc171850831 \h 10 HYPERLI