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.
作者
杨欣
董德隆
YANG Xin,DONG De-long （Jinan Broadcast Television Network Company, Shandong Jinan 250400, China）
出处
《中国有线电视》
2007年第3期285-288,共4页
China Digital Cable TV
关键词
HFC网
反向噪声
传输方式
入侵噪声
双向传输
HFC network
opposite direction noise
transfer way
invasive noise
two-way transmission
