双向CATV网络的构建

HFC网络是传统有线电视广播走向双向化的一种很好的实现方式。下文较为详细地分析了HFC网络的结构和演变，然后对电信和有线电视网络升级改造的方式进行了探讨。

HFC is a good method for traditional CATV broadcasting to realize tw0-way transmission.In this paper,the structure of HFC networks is analyzed in detail,and the upgrading of telecommunication and CATV networks are discussed.