摘要
电信部门为了增强现有的语音业务功能，特别是未来的图像数据业务，正不断地对其通信网结构进行升级改造。一种基于光纤环路技术（ＦＩＴＬ）的接入网结构———交换式数字视频（ＳＤＶ）已在国外进行试验，本文重点介绍了ＳＤＶ系统的原理结构及其关键技术，并与双向的混合光纤同轴网进行了比较，提出了近期内我们应采取的对策。
elecommunications service providers are upgrading their network infrastructure to enhance telephony,especially to enable future video and data services.Switched digital video(SDV)access network as a fiberintheloop(FITL)application is now being deployed by several carriers abroad.This paper discribes its architecture and key technologies.Features of this network are compared with hybrid fiber cable (HFC) network.Some suggestions are also presented.
出处
《电信科学》
EI
北大核心
1998年第9期8-11,共4页
Telecommunications Science
关键词
交换式
数字视频
宽带接入网
视频通信
witched digital video,broadband access network,video telecommunication
