摘要
在全数字的HDTV中,第一次把均衡器的节数增加到了256.对如此长的均衡器对付不同强度和时延的多径干扰的能力进行计算机仿真,并提出一种硬件实现的结构.根据1994年美国有关部门对大联盟的HDTV样机实地测试时得到的信道条件,分析了均衡器在最坏条件下的工作情况,证明所设计的均衡器的结构是可行的.
The number of tapes of equalizer increases over 256 in digital HDTV. For such a long equalizer, this article discusses simulation of its ability of canceling ghosts of different strength and delay. A hardware implementation is also proposed. According to the data acquired in the field tests of GA's prototype machine by the Public Broadcasting Service in the US, the equalizer is to be able to fulfil ghost canceling task in most terrestrial transmission cases.
出处
《浙江大学学报(工学版)》
EI
CAS
CSCD
北大核心
2001年第1期76-76,共1页
Journal of Zhejiang University:Engineering Science
基金
国家自然科学基金,浙江省自然科学基金