Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Reexamination Certificate
2005-12-29
2010-11-30
Lee, John (Department: 2618)
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
C455S063100, C455S020000, C455S067130
Reexamination Certificate
active
07844219
ABSTRACT:
Provided are an on-channel repeater and a method thereof. The on-channel repeater can extract reception channel information from signals transmitted from a main transmitter or another repeater, compensate for channel distortion caused on a transmission channel by inversely reflecting the extracted reception channel information to the received signals, and transmit the channel-distortion compensated signals through the same channel as a reception channel, and a method thereof. The on-channel repeater includes: a receiver for receiving RF signals transmitted from outside; a down-converter for down-converting the received RF signals into signals of a desired band; a channel-estimator for estimating an inverse value of a reception channel based on the down-converted signals; an adaptation filter for compensating for channel distortion by using a filter having the inverse value of the estimated reception channel; an up-converter for up-converting the channel distortion-compensated signals into RF signals; and a transmitter for transmitting the up-converted RF signals.
REFERENCES:
patent: 7627287 (2009-12-01), Moss
patent: 2005/0094750 (2005-05-01), Park et al.
patent: 2009/0061766 (2009-03-01), Ding et al.
patent: 1549473 (2004-11-01), None
patent: 2003174392 (2003-06-01), None
patent: 2002-0088304 (2002-11-01), None
patent: 10-2004-0097683 (2004-11-01), None
patent: 10-2004-0099878 (2004-12-01), None
patent: 20040102635 (2004-12-01), None
patent: 10-2005-0029569 (2005-03-01), None
patent: 10-2005-0040636 (2005-05-01), None
patent: 2004/002015 (2003-12-01), None
International Search Report for corresponding International Application No. PCT/KR2005/004645 dated Apr. 13, 2006.
Office Action of the Patent Office of the People's Republic of China issued on May 27, 2010 with English translation thereof.
Eum Ho-Min
Kim Heung-Mook
Kim Seung-Won
Lee Soo-In
Lee Yong-Tae
Electronics and Telecommunications Research Institute
Kile Park Goekjian Reed & McManus PLLC
Lee John
Park Jae Y.
LandOfFree
Apparatus and method of on-channel repeater does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method of on-channel repeater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method of on-channel repeater will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4202133