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http://dx.doi.org/10.7840/kics.2013.38A.11.955

Performance Enhancement of the Feedback Interference Canceller for the EDOCR in the ATSC DTV System  

Lee, Young-Jun (부산대학교 전자전기컴퓨터공학과 통신 및 신호처리 연구실)
Park, Sung Ik (한국전자통신연구원)
Kim, Heung Mook (한국전자통신연구원)
Kim, Hyoung-Nam (부산대학교 전자전기컴퓨터공학과 통신 및 신호처리 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38A, no.11, 2013 , pp. 955-966 More about this Journal
Abstract
We propose two feedback interference cancellers(FICs) to improve the performance of the equalization digital on-channel repeater(EDOCR) with the FIC for the ATSC DTV broadcasting system. The FIC estimates the feedback channel between Tx. and Rx. antennas of the repeater by cross-correlating the reference signal and the feedback signal. Since there is a DC pilot which ruins the white property of the ATSC DTV signals, the FIC cannot estimate the feedback channel accurately. To solve the problem, the structural method which uses an additional DC pilot free reference for feedback channel estimation and the algorithmic method based on the digital signal processing which whitens the ATSC DTV signals and performs the feedback cancellation in the whitened signal domain. Simulation results show that the proposed two FICs show better feedback cancellation performance than the conventional FIC.
Keywords
ATSC DTV; EDOCR; Feedback Interference Canceller; Pre-whitening filter; DC-pilot;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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