摘要
光纤同轴电缆混合HFC(hybridfiberandcoaxial)网络是目前国际上广泛采用的有线电视传输方式。为实现HFC网络核心单元——光节点工作状态的远程自动监控,提出了HFC网络光节点监控系统的硬件组成,分析了该系统的数据速率、调制方式、带宽选取、数据结构以及通信协议。上述原理成功地应用于深圳有线电视网络的光节点监控系统的软件界面和功能模块。同时提出了一种防止安装箱非法开启的解决方法。所提出的原理和方法对于HFC网络光节点监控系统的开发具有指导作用。
HFC (hybrid fiber and coaxial) networks are the most general mode used in cable TV networks. A hardware based HFC fiber node monitoring system was developed for remote monitoring of HFC fiber nodes which are the key component of HFC networks. Analyses were developed for the system data rate, modulation mode, bandwidth choice, packet structure, and communication protocol. This paper describes the function module and software interface to an existing system which is used in the Shenzhen CATV (cable television) network. A method was also developed to prevent illegal opening of the installation box. The method provides an efficient, practical HFC fiber node monitoring system.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第7期1001-1004,共4页
Journal of Tsinghua University(Science and Technology)
关键词
光纤同轴电缆混合
通信
监控系统
光节点
hybrid fiber and coaxial (HFC)
communication
monitor system
fiber node
