Zipper DMT(discrete multi-tone) system and method for determining timing advance in the same system

Disclosed is a method for determining a timing advance in a zipper DMT system. A remote transmitting/receiving unit receives a training start signal from an optical network unit's transmitting/receiving unit, and transmits a response signal by a first timing advance before the time when a sampl...

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Bibliographic Details
Main Author LIM GI-HONG,LEE JUN-BEOM,PARK CHEOL-JIN
Format Patent
LanguageEnglish
Published 02.05.2007
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:Disclosed is a method for determining a timing advance in a zipper DMT system. A remote transmitting/receiving unit receives a training start signal from an optical network unit's transmitting/receiving unit, and transmits a response signal by a first timing advance before the time when a sample interval of the received signal is finished. When receiving the response signal, the optical network unit's transmitting/receiving unit calculates a number of delayed samples between a transmitting signal interval and a receiving signal interval at the optical network unit's transmitting/receiving unit, determines a second timing advance considering the number of delayed samples and the first timing advance, and transmits the second timing advance to the remote transmitting/receiving unit. The remote transmitting/receiving unit transmits a response signal by a second timing advance before the time when the sample interval of the received signal is finished.
Bibliography:Application Number: CN20028009259