本文介绍了利用HFC网络开展交互式业务时,在回传通路上会遇到的最大问题-回传噪声,分析了回传噪声的来源、种类,及噪声的形成原因、侵入途径等,提供了为解决回传噪声问题,在设计、施工、维护等方面应采取的方法和措施。 This article describes the use of HFC networks to carry out interactive services, the return path will encounter the biggest problem - return noise, the source of the backhaul noise, analysis of the causes of formation of noise, invasion and other ways to provide In order to solve the problem of return noise, the methods and measures should be taken in the aspects of design, construction and maintenance.