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:
Apr. 20, 2004
Filed:
Sep. 06, 2000
Kurt Albert Kallman, Mesa, AZ (US);
Daniel James Knollmueller, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A feed-forward symbol synchronizer ( , FIG. ) samples symbols transmitted within one or more packets that form a burst of radio frequency (RF) energy. The symbol samples ( ) are delayed in a data delay buffer ( ) while a phase estimate ( ) is generated for each packet. A resampler ( ) resamples the delayed symbol samples based on the phase estimate, resulting in resampled data ( ) that includes one sample per symbol. The resampled data is clocked into a dual-port RAM ( ) using a resampling clock that is also based on the phase estimate. The resampled data is then clocked out of the dual-port RAM and into a demodulator ( ) using the receiver's symbol clock ( ). Also described are methods of operating the feed-forward symbol synchronizer.