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8-VSB Remodulator for Retransmitting the Terrestrial Digital Broadcasting  

Kim, Yoo-Won (인하대학교 정보공학과)
Jo, Geun-Sik (인하대학교 컴퓨터정보공학부)
Publication Information
Journal of Korea Multimedia Society / v.13, no.10, 2010 , pp. 1525-1533 More about this Journal
Abstract
With the digital terrestrial television broadcasting transition, terrestrial television broadcasting have required the replacement of retransmission facilities for the analog broadcasting installed in the existing apartment, building, cable TV station, MATV system and so on. In addition, new standards have been enacted for retransmission of the digital television broadcasting in MATV system. To deal with this issue, in this paper, we propose a new 8-VSB remodulator that can retransmit signals of the terrestrial digital television broadcasting. Moreover, we present a standard and the process composition of the 8-VSB remodulator, and an experimental environment configuration for performance evaluation. To achieve this, we have implemented the 8-VSB remodulator with the sequential process components comprised of the RF signal retransmission, the TS stream modulator, the RF signal reception and demodulation. Through the simulation, we analyze the performance standard from the measured data such as spurious and phase noise. And then, we measure SNR and EVM of each attenuation step of the signal obtained by the signal processor and the 8-VSB remodulator with the same retransmission environment and conditions. Experimental results show that both the 8-VSB remodulator and the signal processor can be used as equipment for the retransmission of the terrestrial digital television broadcasting. In addition, the 8-VSB remodulator performed well to improve the transmission efficiency for the digital broadcasting signal, compare to the existing signal processor.
Keywords
8-VSB Remodulator; MATV; Digital Terrestrial Television Broadcasting Transition; Digital Broadcasting; Analog Switchoff;
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