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:
Jan. 05, 2010
Filed:
Sep. 30, 2005
Timothy R. Miller, Arlington, VA (US);
John W. Mccorkle, Vienna, VA (US);
Timothy R. Miller, Arlington, VA (US);
John W. McCorkle, Vienna, VA (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
A method is provided for estimating a frequency offset value. This method includes: receiving a signal from the transmitting device at the receiving device, the received signal having a transmitter frequency (); generating a local signal at the receiving device, the local signal having a starting frequency (); comparing a received signal phase and a local signal phase to determine an adjusted error signal representing a phase difference between the received signal and the local signal (); adjusting a current frequency of the local signal from the starting frequency to the transmitting frequency over a time period (); integrating the adjusted error signal over the time period to generate an integrated error signal (); and filtering the integrated error signal to generate a frequency difference estimate indicative of the frequency difference between the transmitter frequency and the starting frequency ().