HFC网络中数字电视信号性能参数测试分析  

Measurement and Analysis of the Digital TV Signal Parameters in HFC Networks

作　　者：郭爱煌[1] 李中显[2] 俞骏[1] 

机构地区：[1]同济大学电子与信息工程学院信息与通信工程系,上海200092 [2]同济大学职业教育学院,上海200092

出　　处：《光纤与电缆及其应用技术》2006年第3期11-14,20,共5页Optical Fiber & Electric Cable and Their Applications

摘　　要：光纤同轴混合(HFC)网是目前承载数字电视信号的主要传输媒质,HFC网络能否真正满足数字电视传输网络的要求,需要对HFC网络中数字电视信号性能参数进行测试分析。在讨论数字电视信号电平、误码率、调制误差比等主要性能参数的基础上,根据实际运营的有线数字电视HFC网络构建测试模型,测试了数字电视信号的性能参数,分析了数字电视信号在HFC网络中的传输情况。测试分析表明:在目前条件下,HFC网络能适应数字电视信号的传输,有一定的优越性。Today hybrid fiber coax （HFC） network is the main medium of transmitting digital TV signals, but it is necessary to determine whether HFC can meet the requirements of wideband digital TV signal transmitting by measuring and analyzing the digital TV signal parameters. Based on the discussion of digital TV signal parameters, such as signal level, bit error ratio, and modulation error ratio, and according to the really operating HFC networks, the measurement model is built. And the digital TV signal parameters in the HFC model are measured. The digital TV signal transmisson characteristics in the HFC model are analyzed. From the results of measurement and analysis, it is obvious that HFC networks can adapt the transmission of digital TV signal.

关 键 词：光纤同轴混合网 数字电视信号 测试 

分 类 号：TN943.6[电子电信—信号与信息处理]