The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2002
Filed:
Jun. 03, 1998
Eric Baissus, Le Rouret, FR;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Device for estimating the frequency offset in a signal received by a differential demodulator of a mobile-telephone set, intended for implementing the method according to one of claims to , characterized in that it has means ( ) for calculating an error signal &egr; on the basis of the phase &phgr; of the output signal of the demodulator and the ideal phase &phgr; of this signal, means ( ) for establishing the absolute value (ABS) of the error signal &egr;, means ( ) for calculating an estimate of the average of the error signal &egr; calculated over a certain number of samples, from which estimate n bits are taken, means ( ) for calculating an estimate of the average of the absolute value of the error signal &egr; over a certain number of samples, from which estimate n bits are taken, and means ( ) for modelling a frequency-offset function &OHgr;(FO-RAW, Q-RAW) on the basis of the said estimates.