有线电视广播网结构的发展

Development of cable television broadcasting network architecture

分三部分说明有线电视广播网结构的发展。先是扼要介绍早年使用同轴电缆有线电视广播网。着重叙述现行的光纤与同轴电缆混合的有线电视网 HFC;估测光纤在有线电视网应用的发展前途。

The paper discusses the development of cable television broadcasting network architecture in 3 parts.After briefly reviewing the coaxial cable television broadcasting network used in early days,the paper emphasizes on the application of optical fiber in recent TV broadcasting network so as to form the Hybrid Fiber/Coaxial Cable network HFC.Finally,the paper estimates some possible development trends in improving such HFC network for use of both TV broadcasting and bi directional broadband digital communication.