前端的建设以及传统CATV HFC网络向双向交互式数据通信平台的演变,都导致了一个网络结构优化的问题。网络改造的期望目标是非常清楚的,即它们必须要能够满足当前模拟信号和数字信号复用系统的需求。同时,作为一个理想化的目标,从长期发展来看,它还应该具有能够处理大容量信息的能力。例如提供双向交互式业务。 The construction of the front end and the evolution of the traditional CATV HFC network towards a two-way interactive data communication platform have all led to a network structure optimization problem. The desired goal of network transformation is clear: they must be able to meet the needs of today’s analogue and digital signal multiplexing systems. At the same time, as an idealized goal, in the long run, it should also have the capacity to handle large volumes of information. For example providing two-way interactive services.