數(shù)據(jù)網(wǎng)絡(luò)及光傳輸論文(已修改)
2025-07-05 03:51 本頁(yè)面
【正文】 論文題目：數(shù)據(jù)網(wǎng)絡(luò)及光傳輸認(rèn)證論文學(xué) 院：電子工程學(xué)院年 級(jí)：2009級(jí)專 業(yè)：電子科學(xué)技術(shù)姓 名：（黑體三號(hào)字）學(xué) 號(hào)：（黑體三號(hào)字）指導(dǎo)教師：劉勇 年 月 日摘要 傳輸系統(tǒng)是通信網(wǎng)的重要組成部分，傳輸系統(tǒng)的好壞直接制約著通信網(wǎng)的發(fā)展。當(dāng)前世界各國(guó)大力發(fā)展的信息高速公路，其中一個(gè)重點(diǎn)就是組建大容量的傳輸光纖網(wǎng)絡(luò)，不斷提高傳輸線路上的信號(hào)速率，擴(kuò)寬傳輸頻帶，就好比一條不斷擴(kuò)展的能容納大量車流的高速公路。同時(shí)用戶希望傳輸網(wǎng)能有世界范圍的接口標(biāo)準(zhǔn)，能實(shí)現(xiàn)我們這個(gè)地球村中的每一個(gè)用戶能隨時(shí)隨地便捷地通信。SDH(Synchronous Digital Hierarchy，同步數(shù)字傳輸體系)是一種將復(fù)接、線路傳輸及交換功能融為一體、并由統(tǒng)一網(wǎng)管系統(tǒng)操作的綜合信息傳送網(wǎng)絡(luò)，是美國(guó)貝爾通信技術(shù)研究所提出來(lái)的同步光網(wǎng)絡(luò)(SONET)。國(guó)際電話電報(bào)咨詢委員會(huì)(CCITT)(現(xiàn)ITUT)于1988年接受了SONET概念并重新命名為SDH，使其成為不僅用于光纖也適用于微波和衛(wèi)星傳輸?shù)耐ㄓ眉夹g(shù)體制。它可實(shí)現(xiàn)網(wǎng)絡(luò)有效管理、實(shí)時(shí)業(yè)務(wù)監(jiān)控、動(dòng)態(tài)網(wǎng)絡(luò)維護(hù)、不同廠商設(shè)備間的互通等多項(xiàng)功能，能大大提高網(wǎng)絡(luò)資源利用率、降低管理及維護(hù)費(fèi)用、實(shí)現(xiàn)靈活可靠和高效的網(wǎng)絡(luò)運(yùn)行與維護(hù)，因此是當(dāng)今世界信息領(lǐng)域在傳輸技術(shù)方面的發(fā)展和應(yīng)用的熱點(diǎn)，受到人們的廣泛重視。關(guān)鍵詞SDH；傳輸系統(tǒng)；通信網(wǎng)；綜合信息傳送網(wǎng)絡(luò)Abstract Transmission system network are important ponents of．A direct transmissionsystem restricts munication network hair Exhibition．At present the world to develop the information superhighway．One key point is the formation of large—capacityoptical network transmission．Continuously improve the signal transmission line on rates， widening the transmission band．Transmission network at the same time the user wants to have worldwide interface standards．Able to achieve our global village every USer Can easily anytime， anywhere munications．SDH(Synchronous Digital Hierarchy)is an multiplexer，line transmission and switching capabilities into one， unified network management system operated by theGeneral information transmission network． Advisory Committee on International Telephone and Telegraph(CCITT)(now ITU—T)in 1 988 to accept the concept of theSONET and SDH renamed．Applies not only to make it also applicable to fiberopticmicrowave and satellite transmission system of the Common Technical．It may realizethe network effective management，the realtime service monitoring，the dynamicnetwork maintenance， intermunication between the different manufacturerequipment’S and SO on many functions．It Can raise the network resource use factor，reduce the management and the maintenance cost greatly， realizes nimble reliable and the highly effective network movement and the maintenance．Therefore is now the world information field in the transmission technology aspect development and the application hot spot．Receives the people widely to take seriously．Key wordsSDH；Transmission system；Communications network；Comprehensiveinformation transmission network目錄摘要 IAbstract II前言 1第一章 SDH概述 1 SDH定義 1 SDH的基本傳輸原理和優(yōu)點(diǎn) 4第二章 SDH的應(yīng)用與發(fā)展趨勢(shì) 8 SDH數(shù)字微波通信的特點(diǎn)及其應(yīng)用 8 定義 8 組成 8 關(guān)鍵技術(shù) 8 SDH微波在SDH電信網(wǎng)中的應(yīng)用 8 工程綜合應(yīng)用網(wǎng)圖 8 SDH的集成寬帶接入應(yīng)用 8 簡(jiǎn)介 8 特點(diǎn) 9 SDH的發(fā)展趨勢(shì) 9結(jié)論 24參考文獻(xiàn) 25致謝 27前言SDH全稱叫做同步數(shù)字傳輸體制，由此可見SDH是一種傳輸?shù)捏w制協(xié)議，就象PDH準(zhǔn)同步數(shù)字傳輸體制一樣，SDH這種傳輸體制規(guī)范了數(shù)字信號(hào)的幀結(jié)構(gòu)、復(fù)用方式、傳輸速率等級(jí)、接口碼型等特性。SDH技術(shù)的誕生有其必然性，隨著通信的發(fā)展，要求傳送的信息不僅是話音，還有文字、數(shù)據(jù)、圖像和視頻等。加之?dāng)?shù)字通信和計(jì)算機(jī)技術(shù)的發(fā)展，在70至80年代，陸續(xù)出現(xiàn)TTI(DSl)／E1載波系統(tǒng)(1．544／2．048Mbp
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