Apparatus and method for corresponding frequency synchronization in on-channel repeater

Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization process of the receiving signal from a main transmitter or another r...

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Bibliographic Details
Main Author EUM HO-MIN,LEE YONG-TAE,KIM SEUNG-WON,KIM HEUNG-MOOK,SEO JAE-HYUN,PARK SUNG-IK,LEE SOO-IN
Format Patent
LanguageEnglish
Published 16.05.2007
Subjects
BASIC ELECTRONIC CIRCUITRY
BROADCAST COMMUNICATION
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
SELECTING RESONANT CIRCUITS
TRANSMISSION
TUNING RESONANT CIRCUITS
WIRELESS COMMUNICATIONS NETWORKS
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Summary:Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization process of the receiving signal from a main transmitter or another repeater and reflecting them in the transmitting signal in an on-channel repeater. The apparatus includes a carrier recovery means for compensating a carrier frequency error of a receiving signal; a timing recovery means for compensating a sampling timing error of the receiving signal; a carrier error reflecting means for reflecting the carrier frequency error extracted from the carrier recovery means to a transmitting signal; and a timing error reflecting means for reflecting the sampling timing error extracted from the timing recovery means to the transmitting signal. The present invention is used to form an on-channel repeating network in any transmission system including a digital television broadcasting system.
Bibliography:Application Number: CN2005818525