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:
Oct. 17, 2006
Filed:
Sep. 24, 2001
Fine frequency offset estimation and calculation and use to improve communication system performance
Jeffrey M. Gilbert, Sunnyvale, CA (US);
Teresa H. Meng, Portola Valley, CA (US);
John Thomson, Santa Clara, CA (US);
Yi-hsu Wang, Palo Alto, CA (US);
Jeffrey M. Gilbert, Sunnyvale, CA (US);
Teresa H. Meng, Portola Valley, CA (US);
John Thomson, Santa Clara, CA (US);
Yi-Hsu Wang, Palo Alto, CA (US);
Atheros Communications, Inc., Santa Clara, CA (US);
Abstract
A method for correcting influence of frequency offset between a receiver and a transmitter by evaluating training symbols received during a preamble period. The method includes producing, based on at least one long training symbol, a first vector whose first vector angle is indicative of a fine offset between the receiver and the transmitter, producing a fine offset estimate based on the first vector angle, and multiplying, with a signal having a frequency based upon the fine offset estimate, data symbols that are received after the at least one long training symbol is received.