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Conference Paper
Pre-equalization Method to Minimize Time Delay of Equalization Digital On-Channel Repeater in ATSC System
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- Authors
- Sung Ik Park, Heung Mook Kim, Jae Hyun Seo, Jae Young Lee, Jong Soo Lim
- Issue Date
- 2007-01
- Citation
- International Conference on Consumer Electronics (ICCE) 2007, pp.1-2
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents a novel pre-equalization method to minimize the signal processing time delay of the Equalization Digital On-Channel Repeater (EDOCR) for the ATSC terrestrial digital TV system. The proposed preequalization method is to calculate pre-equalizer filter coefficients by using a baseband signal as a reference signal and a demodulated repeater output signal, then to create new VSB pulse shaping filter coefficients by the convolution of the EquiRipple (ER) filter and the pre-equalizer filter coefficients. The new VSB pulse shaping filter minimizes the time delay of the EDOCR by adjusting the number of its pre-taps and also compensates the linear distortions due to the use of the ER filter and mask filter. ©2007 IEEE.
- KSP Keywords
- Filter coefficients, Pre-equalizer, Processing time delay, Pulse shaping filter, Reference signal, Signal Processing, baseband signal, digital TV, pre-equalization