摘要
缆桥系统是一种基于同轴电缆的射频调制技术,是为解决在有线电视同轴电缆上进行高速数据接入问题而提出的技术方案。通过对分支分配器和同轴电缆传输特性的研究与分析,建立了分支分配器模型和信道多径反射模型,分析它们对缆桥的影响。模型仿真结果与实测值相吻合,表明提出的分支分配器模型和信道多径模型对实际缆桥系统的开发和标准建立具有指导意义。
Cable Bridge system is a kind of RF modulation technology. It＇s designed to solve the problem of high-speed data access by CATV coaxial cable. Through research of splitter and distributor＇s transmission characteristic, the paper establishes a model of splitter and distributor and a multi-path model of coaxial cable and analyzes their impact on Cable Bridge. The field test result and the response curve of simulation are matched. It indicates that the models have a guiding significance to the equipment development and the standards establishment.
出处
《中国有线电视》
2009年第2期143-149,共7页
China Digital Cable TV
基金
上海市重大科技专项资助(07dz5004-6A)
关键词
缆桥
分配器
分支器
S参数
损耗
多径反射
Cable Bridge
distributor
splitter
S parameter
transmission attenuation
multipath reflection
