双向网改造中回传系统设计需要注意的问题

Bidirectional Network Transformation and Transmission System Design Issues Requiring Attention

为了参与市场竞争,必须对有线电视网络进行双向改造,而网络的双向、互动、高效主要体现在回传系统的设计和建设上,为此根据实践经验,提出双向网改中回传系统设计需要注意的几个问题,只有在这几个方面精心设计、严格把关,才能保证回传通道的性能和质量。

This paper mainly presents in the bidirectional network transformation in transmission system design should pay attention to in return channel level flatness, temperature, the difference of HFC return path loss, optical fiber link loss, return the receiver signal measurement accuracy and other aspects.