摘要
以提高有线电视双向HFC网络上行信道的信噪比为目标,分析网络中的相关因素;以链路中每个CM的上行链路衰减为突破点,通过对网络分配结构的调整,尽量令每个CM上行链路的衰减值均等,最终上行信道指标大幅提高,改善双向网络的稳定性和提高了上行带宽。
In order to raise the SNR of the HFC network upstream signal path, this paper analyzed the related factor in the network. And by studying the attenuation of each CM in the HFC network upstream, the paper suggests to raise the upstream signal path SNR by adjusting the network distribution, so that the stability and upstream bandwidth can be improved.
出处
《中国有线电视》
2009年第2期160-164,共5页
China Digital Cable TV
