一种基于参差QAM的全数字HDTV传输调制技术的研究  

Research of Trgnsmission Modulation Techniques Based on QAM of Staggered Delay for all Digital HDTV Signals

作　　者：梅勇[1] 王群生[1] 徐秉铮[1] 

机构地区：[1]华南理工大学无线电系

出　　处：《电路与系统学报》1996年第2期57-61,共5页Journal of Circuits and Systems

摘　　要：数字ＨＤＴＶ地面传输技术中的一个基本要求是能与现有模拟电视同播。本文提出一类新的数字ＨＤＴＶ调制方式。计算机模拟和分析表明，此方式较适于与现有电视同播，且其抗干扰性能优于ＱＡＭ和ＶＳＢ方式。硬件实现也较简单。One of the basic requirements for the terrestrial transmission of digital HDTV signals is that it can perform simulcasting with elisteut analogue TV broadcasting system. A new kind of modulation technique for digital HDTV is put forward in this paper.Computer simulation and analysis show that this kind of technique is more immune from interferences than the con,entional IV VSB system and QAM system. The hardware realization is also simple.

关 键 词：HDTV QAM 参差 同播 调制技术 VSB 地面传输 硬件实现 抗干扰性能 数字 

分 类 号：TN949[电子电信—信号与信息处理] TN915[电子电信—信息与通信工程]