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http://dx.doi.org/10.5909/JBE.2009.14.2.107

An Interference Cancellation Technique for Digital On-Channel Repeaters for T-DMB  

Choi, Jin-Yong (Department of Electrical & Electronic Engineering, Yonsei University)
Hong, Jin-Kyu (Department of Electrical & Electronic Engineering, Yonsei University)
Hur, Min-Sung (Communication Research Institute, Samsung Electronics)
Suh, Young-Woo (Broadcasting Technical Research Institute, Korea Broadcasting System)
Seo, Jong-Soo (Department of Electrical & Electronic Engineering, Yonsei University)
Publication Information
Journal of Broadcast Engineering / v.14, no.2, 2009 , pp. 107-113 More about this Journal
Abstract
In Digital On-Channel Repeaters (DOCR) of Terrestrial-DMB (Digital Multimedia Broadcasting), there exist feedback signals generated from transmit antenna and re-entering at receive antenna. Therefore DOCR becomes unstable unless the feedback signal is properly eliminated. Previous research proposed a feedback canceller to estimate the feedback channel to deal with this problem. However formerly used estimation algorithms show unsatisfied performance in terms of convergence rate and quality although their implementations are simple. This paper applies PNLMS (Proportionate Normalized Least Mean Squares) adaptive algorithm to feedback channel estimation and evaluates the performances which solve the problem of feedback signal effectively.
Keywords
Digital On-Channel Repeater (DOCR); PNLMS; adaptive channel estimation; feedback canceller;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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