De-correlating partial update technique for feedback channel estimator in 8VSB DTV DOCR

In this paper, a partial update method for feedback channel estimation is presented for 8VSB DTV digital on-channel repeater (DOCR). For reducing a cross-correlation between input signals of a feedback channel estimator, conventional DOCR using interference canceller intentionally generates processi...

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Bibliographic Details
Main Authors: Jin-kyu Hong, Jin-Yong Choi, Young-Woo Suh, Jaekwon Lee, JongSoo Seo
Format: Conference Proceeding
Language:English
Subjects:
Channel estimation
Delay estimation
Digital TV
Feedback
Filters
Interference cancellation
Intersymbol interference
Repeaters
Signal generators
Signal processing
Online Access:Request full text
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Summary:In this paper, a partial update method for feedback channel estimation is presented for 8VSB DTV digital on-channel repeater (DOCR). For reducing a cross-correlation between input signals of a feedback channel estimator, conventional DOCR using interference canceller intentionally generates processing delay which may act as a post-cursor ISI at a DTV receiver. Utilizing sparse characteristics of feedback channel profile, proposed scheme suppresses update of a channel estimation filter for initial taps. Simulation results verify that proposed scheme obtains equivalent interference suppression performances without any intentional processing delay.
ISSN:2158-3994
2158-4001
DOI:10.1109/ICCE.2010.5418761