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http://dx.doi.org/10.5909/JBE.2009.14.2.228

A study of next generation OpenCable systems for Ultra-High Definition television broadcasting  

Cho, Chang-Yeon (Konkuk Univ. Dept. of Electronic Engineering)
Heo, Jun (Korea Univ. Dept of Electrical and Electronic Engineering)
Kim, Joon-Tae (Konkuk Univ. Dept. of Electronic Engineering)
Publication Information
Journal of Broadcast Engineering / v.14, no.2, 2009 , pp. 228-237 More about this Journal
Abstract
This paper examines the potential of Ultra-High Definition TV (UD-TV) broadcasting transmission systems beyond HD-TV over cable channel. Firstly, we analyze the trend of TOV(Threshold of Visibility) by extending the OpenCable (J.83 Annex B) system 256QAM which is the standard of Korean and American cable television transmission to 1024QAM, and realize that the OpenCable 1024QAM has nearly 30% higher data rate than 256QAM at the expense of impractically higher TOV (Threshold of Visibility). To achieve practical TOV, we control code rates of inner convolutional coder and replace turbo coder in forward error correction (FEC) part, thereby analyzing the best performance of the OpenCable systems having conventional FEC. In that result, it is necessary to modify conventional FEC of the OpenCable system to achieve under 31.5dB TOV. Moreover we study the potential of UD-TV transmission via two or more TV channels, so called channel bonding, through the Shannon capacity in 6MHz channel and the relationship with next generation A/V codec technologies.
Keywords
Ultra-High Definition; Super Hi-Vision; OpenCable; Next generation digital broadcasting; Cable television broadcasting;
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