本文選題：有線(xiàn)電視 + 雙向傳輸��； 參考：《福州大學(xué)》2014年碩士論文

【摘要】：在現(xiàn)代社會(huì)生活中有線(xiàn)電視網(wǎng)絡(luò)是人們生活中一個(gè)不可或缺的重要組成部分,例如：酒店、公共場(chǎng)所、汽車(chē)、飛機(jī)、輪船和火車(chē)等諸多場(chǎng)所中,人們都可以發(fā)現(xiàn)電視的蹤影。有線(xiàn)電視網(wǎng)絡(luò)擔(dān)負(fù)著傳播信息,提供人們娛樂(lè)節(jié)目的重要功能,伴隨著人們生活質(zhì)量的提高,人們對(duì)于廣播電視網(wǎng)絡(luò)提出了越來(lái)越高的要求,廣電運(yùn)營(yíng)商也相應(yīng)的推出了數(shù)字電視、視頻點(diǎn)播、寬帶上網(wǎng)等新的業(yè)務(wù)來(lái)滿(mǎn)足要求。本課題主要基于通過(guò)增加以及更換器件,同時(shí)通過(guò)比較CMTS+CM、EPON+LAN、EPON+EOC、 RFoG、Fiber Deep HFC五種不同的接入網(wǎng)技術(shù),來(lái)選擇一種對(duì)原有線(xiàn)電視單向網(wǎng)絡(luò)做出一定的改變,以實(shí)現(xiàn)網(wǎng)絡(luò)的雙向化改造。論文選取某小區(qū)雙向化改造實(shí)例,從其改造需求、改造方案的選定、以及施工進(jìn)行詳細(xì)的分析介紹。同時(shí)詳細(xì)的分析EPON+EOC技術(shù)方案特點(diǎn)、適用范圍、技術(shù)實(shí)現(xiàn)方式等。雙向改造以PON技術(shù)為主干,通過(guò)增加新的光設(shè)備OLT和ONU,在前端機(jī)房通過(guò)波分復(fù)用技術(shù)將廣播和窄播信號(hào)混合后傳輸至OLT,經(jīng)由OLT再傳輸至光節(jié)點(diǎn),廣播信號(hào)直接進(jìn)入光站,窄播數(shù)據(jù)信號(hào)經(jīng)由ONU轉(zhuǎn)換成射頻信號(hào)后,在光站中與廣播信號(hào)相互混合,再傳輸至用戶(hù)家中。到達(dá)用戶(hù)家中后,電視信號(hào)直接傳輸至機(jī)頂盒用于收看電視,數(shù)據(jù)信號(hào)送至用戶(hù)家中的EOC終端以供上網(wǎng)。對(duì)于網(wǎng)絡(luò)的擴(kuò)容問(wèn)題,將整個(gè)網(wǎng)絡(luò)分成三個(gè)部分,前端機(jī)房、傳輸網(wǎng)絡(luò)、分配網(wǎng)絡(luò)分別進(jìn)行探討。前端機(jī)房的擴(kuò)容采用了增加機(jī)房使用面積、設(shè)立分機(jī)房、提高信道調(diào)制效率的方法,對(duì)于傳輸段部分使用增加光纜的使用數(shù)量、運(yùn)用波分復(fù)用技術(shù),對(duì)于分配網(wǎng)絡(luò)的擴(kuò)容采用減少每個(gè)光節(jié)點(diǎn)所覆蓋用戶(hù)數(shù)量,以及將網(wǎng)絡(luò)升級(jí)為1GHz傳輸帶寬的方法,以此來(lái)實(shí)現(xiàn)網(wǎng)絡(luò)的擴(kuò)容。論文選取福州市廣電網(wǎng)絡(luò)萬(wàn)隆機(jī)房擴(kuò)容實(shí)例,從其改造需求、改造方案的選定、以及施工進(jìn)行詳細(xì)的分析介紹。本課題所選取的小區(qū)雙向改造和網(wǎng)絡(luò)擴(kuò)容實(shí)例,均達(dá)到了預(yù)期的目的,雙向改造成功實(shí)現(xiàn)了單向網(wǎng)絡(luò)轉(zhuǎn)變?yōu)殡p向傳輸網(wǎng)絡(luò),機(jī)房擴(kuò)容實(shí)現(xiàn)了新增36個(gè)下行光輸出口,新增40個(gè)上行接入口的目標(biāo)。兩個(gè)實(shí)例均符合設(shè)計(jì)和施工規(guī)范,為運(yùn)營(yíng)商更好的為用戶(hù)服務(wù)創(chuàng)造了良好的條件,為運(yùn)營(yíng)商增加戶(hù)均收入奠定了基礎(chǔ)。
[Abstract]:In modern society, cable television network is an indispensable part of people's life, such as: hotels, public places, cars, planes, ships and trains, people can find television. CATV network plays an important role in spreading information and providing entertainment programs for people. With the improvement of people's quality of life, people put forward higher and higher requirements for radio and television networks. Radio and television operators have also introduced new services such as digital television, video on demand and broadband Internet access to meet the requirements. This thesis is mainly based on the comparison of five different access network technologies: CMTS CMN EPON EPON EPON EOC, RFoG Fiber Deep HFC, to choose one of the original CATV one-way network to make certain changes, in order to realize the bidirectional transformation of the network. In this paper, a bidirectional transformation example of a certain district is selected, and detailed analysis and introduction are made from its reconstruction demand, the selection of transformation scheme, and the construction. At the same time, the characteristics of EPON EOC technology scheme, the scope of application, the implementation of technology and so on are analyzed in detail. By adding new optical devices OLT and ONUUN, the broadcast and narrow broadcast signals are mixed and transmitted to OLTs in the front-end computer room through the PON technology, and then transmitted to the optical node via OLT, and the broadcast signals directly enter the optical station. After the narrow broadcast data signal is converted into radio frequency signal by ONU, the broadcast signal is mixed with each other in the optical station and transmitted to the user's home. After arriving at the user's home, the TV signal is transmitted directly to the set-top box for watching TV, and the data signal is sent to the EOC terminal in the user's home for Internet access. For the problem of network expansion, the whole network is divided into three parts: front computer room, transmission network and distribution network. The expansion of the front-end computer room adopts the method of increasing the area of the computer room, setting up the sub-computer room and improving the efficiency of the channel modulation. For the part of the transmission section, the use of increasing the number of optical cables is increased, and the technology of wavelength division multiplexing is used. The expansion of the network is realized by reducing the number of users covered by each optical node and upgrading the network to 1GHz transmission bandwidth. The paper selects Fuzhou broadcast network Wan Long computer room expansion example, from its transformation demand, the transformation plan selection, as well as the construction carries on the detailed analysis and introduction. The bidirectional transformation and network expansion examples selected in this paper have achieved the desired purpose. The two-way transformation has successfully transformed the one-way network into a two-way transmission network, and the computer room has expanded its capacity to realize 36 additional downlink optical transmission outlets. Add 40 additional targets for uplink access. The two examples are in line with the design and construction specifications, which create good conditions for operators to better serve users, and lay the foundation for operators to increase average household income.
【學(xué)位授予單位】：福州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN943.6

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