Registered
APPARATUS AND METHOD FOR ESTIMATING INVERSE CHANNEL OF REPEATER’S RECEIVING CHANNEL
- Inventors
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Sung Ik Park, Heung Mook Kim, Lim Jong Soo, Lee Yong Tae, Park So Ra, Lee Soo In
- Application No.
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12676883 (2008.05.06)
- Publication No.
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20100310023 (2010.12.09)
- Registration No.
- 8411801 (2013.04.02)
- Country
- UNITED STATES
- Project Code
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07MR3800, Development of On-Channel RF repeating technology based on OFDM modulation,
Lee Yong Tae
- Abstract
- Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.
- KSP Keywords
- Channel Estimator, Delay filter, Filter coefficients, Minimum phase, Phase filter, Transmission path, domain filter, group delay, receiving channel, time-domain
- Family
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