Multiplex communications – Generalized orthogonal or special mathematical techniques
Reexamination Certificate
2007-10-02
2007-10-02
Chan, Wing (Department: 2616)
Multiplex communications
Generalized orthogonal or special mathematical techniques
C370S324000, C370S350000, C370S208000, C375S260000, C375S132000
Reexamination Certificate
active
10344769
ABSTRACT:
A method for frequency and time synchronization of a receiver for receiving Orthogonal Frequency Division Multiplexing (OFDM) signals is described. A quality criterion of a OFDM signal is determined during one of the frequency intervals (hops) for each point of one of the two-dimensional frequency and time search areas. The area point having the optimum quality criterion (τx, fx) of the OFDM signal is then determined on the basis of said quality criterion, and the receiver is synchronized on the nominal frequency in view of the different between the nominal frequency (f0) and the frequency value (fx) corresponding to the optimum quality criterion. The OFDM signal may be demodulated and decoded starting with the time value (τx) corresponding to the optimum quality criterion.
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Bott Rainer
Korobkov Dimitri
Pensel Karlheinz
Chan Wing
Ditthavong Mori & Steiner, P.C.
Ngo Nguyen
Rohde & Schwarz GmbH & Co. KG
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