HFC双向传输网探讨  

Investigation and Discussion of HFC Two-way Transmission Network

作　　者：杨欣 董德隆 YANG Xin,DONG De-long （Jinan Broadcast Television Network Company, Shandong Jinan 250400, China）

机构地区：[1]济南广电网络公司,山东济南250400

出　　处：《中国有线电视》2007年第3期285-288,共4页China Digital Cable TV

摘　　要：分析HFC网的上行信道特性，对HFC网双向传输中的难点、回传噪声产生的原因和抑制进行探讨，提出具体的防范措施，根据HFC双向传输网的要求，提出分配网和干线网的设计原则和调试方法。Analyzing up link channel characteristics of HFC network, this article discusses the difficult points in two-way transmission of HFC net, the cause and restriction of upstream noise. According to the requirements of HFC two-way transmission net, practical precautions, technological principles and modulation of distribution network and backbone network are raised.

关 键 词：HFC网 反向噪声 传输方式 入侵噪声 双向传输 

分 类 号：TN943.6[电子电信—信号与信息处理;电子电信—信息与通信工程]