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Frequency Synchronization Technique for the Equalization Digital On-Channel Repeater  

Lee Yong-Tae (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Eum Ho-Min (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Park Sung-Ik (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Seo Jae-Hyun (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Kim Heung-Mook (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Kim Seung-Won (한국전자통신연구원 전파방송연구단 방송시스템연구그룹)
Seo Jong-Soo (연세대학교 전기전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.7A, 2006 , pp. 725-733 More about this Journal
Abstract
In this paper, we propose an algorithm which makes the frequency of output signal synchronize with frequency of input signal in Equalization Digital On-channel Repeater (EDOCR) system which was proposed to overcome the disadvantage of conventional Digital On-Channel Repeater (DOCR). Also, we verify the algorithm by using the mathematical equivalent model and analysis the performance by implying the algorithm to EDOCR. The main idea is to use the frequency offset information, which comes from carrier recovery in the receiving part of EDOCR, when the demodulated symbol is re-modulated in transmitting part. Based on the proposed algorithm, EDOCR not only makes the output signal synchronized with input signal in frequency but also emit the output signal which satisfies the ATSC transmission standard without additional equipments such as Global Positioning System (GSP).
Keywords
ATSC; SFN; Synchronization; DOCR;
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  • Reference
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