蒋彩虹论文.docx

石家庄科技信息职业学院毕业论文题目: HFC 宽带接入技术研究学号: 101401201 姓名: 蒋彩虹专业班级: 10级通信技术指导教师: 白金凤完成日期: 2013-03-19 宽带接入技术研究 HFC 宽带接入技术研究摘要: 随着 网的迅猛发展,人们对远程教学、远程办公、远程医疗、可视电话、 VOD 点播、 成为网络应用的一大热点,这使得信息高速公路“最后一公里”的宽带接入技术迅速发展。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 网络 S-CDMA 技术宽带接入技术研究 Abstract : With the rapid development of work, people's demands on broadband services, such as remote instruction, muting, telemedicine, Visual telephone, VOD, , are increasing sharply. E-business has also es a big hotspot. As a result, the technology of broadband work, "the last kilometer" of information superhighway, is developing promptly. First this paper mainly makes the study to the definition of Broadband work, 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, pares 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. Key words : broadband access work S-CDMA technology 宽带接入技术研究目录一、宽带接入网概述·········································································· 6 (一) 宽带接入网的定义····························································· 6 (二) 宽带接入网的主要技术······················································· 7 (三) 宽带接入网的优势····························································· 9 二、 HFC 宽带接入网技术简述··························································· 10 (一) HFC 网的组成与基本原理··················································· 10 (二) HFC