缆桥信号与CATV信号相互影响的研究

Study of interaction between cable bridge signals and CATV signals

缆桥接入系统实现在有线电视同轴电缆上进行高速数据接入,通过CB Switch和CB Modem将高速数据调制到CATV同轴电缆的空闲信道上,实现电信网、有线电视网和互联网在同轴电缆上的共用。根据实测结果对低频缆桥HomePNA信号(12MHz^28MHz)和高频缆桥MoCA信号(860MHz^1.5GHz)与CATV信号相互间的干扰影响进行分析研究。

Cable bridge access system achieves the high-speed data access by the coaxial cable for CATV.With modulating high-speed data to the idle channel of CATV coaxial cable through CB Switch and CB Modem,it realizes to make the telecommunication network,CATV network and Internet share the coaxial cable by using different channels.According to the measured results,this paper analyzes and researches the interference and influence not only between the cable bridge low-frequency HomePNA signals（12MHz^28MHz）and CATV signals,but also between the cable bridge high-frequency MoCA signals（860MHz～1.5GHz）and CATV signals.