新一代数字电视传输标准DMB-T的关键技术  

Key Technology of Digital Television Transmission Standard DMB-T

作　　者：王军[1] 韩猛[1] 门爱东[1] 杨知行 

机构地区：[1]清华大学数字电视传输技术研发中心,北京100084

出　　处：《电讯技术》2001年第4期62-65,共4页Telecommunication Engineering

摘　　要：本文描述了地面数字电视广播 (DigitalTelevisionTerrestrialBroadcasting ,DTTB)的要求和地面数字电视广播的信道特点 ,在介绍国外现有的DTTB传输标准的基础上说明了清华大学数字电视传输技术研发中心提出的DMB -T (TerrestrialDigitalMultimedia /TelevisionBroadcasting)标准。通过与现有标准在调制、同步、信道估计等方面的比较证明 ,DMB -T具有优越的性能。Requirement of the Digital Television Terrestrial Broadcasting (DTTB) and channel characters of the DTTB is described in this paper. On the basis of existing international standards of DTTB, the DMB-T (Terrestrial Digital Multimedia/Television Broadcasting) standard is innovated by Digital TV R&D Center of Tsinghua University. After comparing the critical transmission techniques of these standards, such as modulation, synchronization and channel estimation, we conclude that the DMB-T has more excellent performance.

关 键 词：图像传输 数字电视 传输标准 DMB-T 

分 类 号：TN949.197[电子电信—信号与信息处理]