HFC宽带接入网改造后的几点思考

About the Transformation of HFC Broadband Access Network

对有线电视进行改造 ,实现HFC双向传输 ,解决回传噪声问题成为HFC宽带接入网方案的关键。改造传统CATV入户的树枝型分配结构为星型集中分配结构 ,极大地降低了上行通道调试的难度和日常网络的维护量 ,解决噪声干扰问题。

Upstream noise problem is the key problem to transform CATV networks, realize HFC two-way transmiting and build the HFC broadband access network. Changing the traditional tree-and -branch cable networks distribution structure into the star form's concentrated distribution structure will greatly reduce the difficulty of debugging upstream channels and the daily times of maintaining the network, and it also solves the noise problem.