摘要
介绍地面数字HDTV的单频网广播技术,并与单载波主发射机方案进行比较,提出OFDM系统中的一种信道估值新方案,它能显著地改善OFDM系统的频谱利用率。数字HDTV的单频网广播被长时延多径干扰所困扰,给出了克服长时延多径干扰的一种方法。
This paper introduces single frequency network broadcasting technique for terrestrial digital HDTV and compares SFN scheme with main transmitter scheme. A new channel response estimation technique for OFDM system is proposed. It can improve spectrum efficiency of OFDM system. SFN is beset with long delay multipath interference. A method of combating multipath interference with long delay is given.
出处
《电视技术》
北大核心
1998年第4期2-5,共4页
Video Engineering
基金
国家自然科学资金资助