数字电视地面广播传输系统参数和工作模式分析  

Analysis of Parameters And Working Mode of Digital Television Terrestrial Broadcasting Transmission System Parameters And Working Mode

作　　者：韩文芳[1] 

机构地区：[1]江苏省电子信息产品质量监督检验研究院,江苏无锡214000

出　　处：《电子质量》2015年第11期76-80,88,共6页Electronics Quality

摘　　要：数字电视地面广播传输系统通过不同的组网模式、组合不同载波模式、信道编码、符号星座映射方式、帧头模式等,可支持三百多种工作模式。数字电视地面广播传输系统可根据应用业务的特性和组网环境选择不同的传输模式和参数以达到业务特性与传输模式的匹配,实现最优满足服务业务需求。该文着重分析了国标中要求的七种工作模式和参数。Digital television ground transmission system through different network mode,combination of dif-ferent carrier mode,channel coding and symbol constel ation mapping method,the frame head model and so on,can support more than three hundred kinds of working mode.Digital television terrestrial transmission sys-tem according to the characteristics of application business and networking environment to select different transfer mode and parameters in order to achieve the business characteristics and transmission mode matching, to achieve optimal meet the service needs of the business.This paper focuses on the analysis of the national standard requirements of seven kinds of working mode and parameters.

关 键 词：数字电视地面广播传输系统 工作模式 载噪比 最小接收电平 有效载荷能力 覆盖范围 固定和移动接收方式 业务广播需求 

分 类 号：TN949.197[电子电信—信号与信息处理]