地面数字电视单频网组网系统模式研究与分析  

Research and Analysis on System Mode of DTTV SFN Building-up

作　　者：孙宁[1] 何剑辉 常江 杨波[1] 

机构地区：[1]北京邮电大学信息与通信工程学院 [2]国家广电总局广播电视规划院无线研究所

出　　处：《广播与电视技术》2010年第9期30-33,15,共4页Radio & TV Broadcast Engineering

摘　　要：本文主要分析了我国地面数字电视广播标准在星座映射方式、前向纠错编码效率及帧头模式等系统参数的设计特点,结合理论分析与软件仿真计算研究分析了地面数字电视广播单频网组网过程中星座映射方式、前向纠错编码效率和帧头模式等系统参数对单频网覆盖性能的不同影响,为单频网组网实际应用中系统模式的选择提供技术依据。With the development of China's DTTV, building-up of DTTV network becomes an urgent priority. In order to solve problem of frequency spectrum shortage during transition from analog to digital by improving spectrum utilization rate, SFN will become a main mode of building-up network. The number of China’s DTTV SFN system mode is more than 300. Combined with theoretical analysis and software simulation, this article researches different effects of constellation mapping, FEC effi ciency and frame head mode on coverage capability during process of DTTB SFN building-up, and provides technology basis for choice of SFN system mode.

关 键 词：地面数字电视 单频网 系统模式 星座映射方式 前向纠错编码效率 帧头模式 

分 类 号：TN949.197[电子电信—信号与信息处理]