数字电视地面广播信道的均衡技术

Equalization technology in digital television terrestrial broadcasting channel

作为数字电视地面广播的一种关键技术,均衡技术可以有效去除符号间干扰,保证视频流的优质传输,尤其确保了大容量、高速可靠移动接收的实现。本文对目前单载波和多载波传输方案中的均衡原理进行了描述,分析了现有方案的不足,并结合盲均衡提出了数字电视均衡技术的发展前景。

As the core technology, equalization in digital television terrestrial broadcasting removes ISI significantly, and ensures perfect transmission of video stream, especially the high data rate, big capacity and reliability of mobile reception. In this paper, the equalization principles in present single-carrier and multi-carrier schemes are introduced, its merits are analyzed as well. Finally, the promising future of DTV equalization technology is discussed combining with blind equalization.