Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-03-21
2006-03-21
Ghayour, Mohammed (Department: 2631)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S316000, C370S207000, C332S103000
Reexamination Certificate
active
07016426
ABSTRACT:
The aim of the invention is to determine the user data constellation of a multi-carrier signal at the receiving end. Said signal is QAM modulated in the 2K mode according to the DVB-T standard and is provided with a central carrier that is situated I the centre of the individual carriers and is temporarily modulated with user data and temporarily represents a distributed pilot. To resolve the aim of the invention, the appearance frequency of all I/Q values pertaining to the portion of user data belonging to the central carrier is detected and the centre of said user data constellation is then detected.
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Balz Christoph
Hofmeister Martin
Ghayour Mohammed
Lewis, Rice & Fingersh L.C.
Malek L.
Rohde & Schwarz GmbH
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