摘要
阐述采用梳状滤波器抑制ＰＡＬ－Ｄ同频信号干扰的原理，比较了采用预编码的逐符号检测技术与最大似然检测算法的性能。参考美国大联盟方案，结合我国实际情况，探索部分响应信道ＴＣＭ技术对数字ＨＤＴＶ地面广播传输的应用。
This paper describes rejection of the co-channel interference due to the PAL-D picture carrier,colour sub-carrier and sound carrier and compares the symbol-by-symbol detection method with MLD method in a system G(D)=1+D￣k with an m-level input.Referencing to the Grand Alliance schem of U.S.A and combining with the practical situation of our country.this paper addresses the application of TCM for partial-response channel to the terrestrial broadcast transmission of digital HDTV signal.
出处
《通信学报》
EI
CSCD
北大核心
1995年第5期10-19,共10页
Journal on Communications
基金
国家自然科学基金
国家科委"八五"攻关计划资助
关键词
高清晰度电视
网格编码调制
信道
terrestrial broadcast transmission of digital HDTV
co-channel PAL-D interference
comb filter.TCM for partial-response Channel
