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随着广电数字化和双向网改造进程,为配合数字电视多种业务加快发展,建设高速、双向的有线电视网络,为有线电视用户提供数据服务、VoD、交互电视等综合多媒体业务已经得到广泛认同。1、广电接入网需求概述我国广电同轴电缆Cable接入覆盖达2亿用户,是覆盖最广泛的有线线路之一,同轴电缆拥有宽频率、高带宽、低干扰的特性。
With the digitalization of radio and television and the transformation of two-way networks, in order to speed up the development of diversified businesses of digital television, build high-speed and two-way cable television networks and provide data services for cable television users. The integrated multimedia services such as VoD and interactive television have been widely recognized. 1, Radio and television access network requirements Overview China’s radio and television coaxial cable Cable access coverage of 200 million users, is one of the most extensive coverage of the cable line, coaxial cable has a wide frequency, high bandwidth, low interference characteristics.