湖南省数字电视地面广播网方案讨论  

Discussion on Scheme of Hunan Provincial DTTV Broadcasting Network

作　　者：蔡成新 张春芳 

机构地区：[1]湖南人民广播电台 [2]湖南省广播电视学校

出　　处：《广播与电视技术》2004年第7期99-102,6,共4页Radio & TV Broadcast Engineering

摘　　要：本文针对目前数字电视地面广播的覆盖对象为移动接收,分析了地面传输移动接收存在的问题及COFDM传输技术、单频网技术、插入保护间隔的解决方案。介绍了湖南省数字电视地面广播网长株潭实验网方案和数字电视发射机的技术要求及组成。The DTTV broadcasting has always been a hotspot of interest to the industry.Although there are no any state standards, a lot of provinces and cities has alreadystarted a trial DTTV broadcasting and gained some valuable experience. There areintroduced a scheme of Changzhutan trial network in Hunan provincial DTTVbroadcasting network and technical requirements and building-up of DTV transmitter.And also analyzed the problems existing in the mobile reception of terrestrialtransmissions, the COFDM transmission technology, SFN technology and a solutionto inserting protection intervals. Good coverage results are achieved.P99

关 键 词：数字电视地面广播 COFDM 单频网 插入保护间隔 发射机 

分 类 号：TN949.197[电子电信—信号与信息处理]