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. 06, 2010
Filed:
Dec. 09, 2005
Applicant:
Jiwu Liu, Shanghai, CN;
Inventor:
Jiwu Liu, Shanghai, CN;
Assignee:
Spreadtrum Communications Inc., Grand Cayman, KY;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/69 (2006.01); H04L 27/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A simple and efficient method is provided for frequency offset fine estimation. The method comprises: subtracting the QPSK modulation phase of a synchronization code from its received phase to generate the phase drift, and then computing the frequency offset based on the phase drift.