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:
Dec. 26, 2017
Filed:
Aug. 25, 2015
Applicant:
Freescale Semiconductor, Inc., Austin, TX (US);
Inventors:
Mihai-Ionut Stanciu, Bucharest, RO;
Raja V. Tamma, Leander, TX (US);
Khurram Waheed, Austin, TX (US);
Assignee:
NXP USA, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 24/08 (2009.01); H04L 5/00 (2006.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
H04L 5/0048 (2013.01); H04W 84/12 (2013.01);
Abstract
Methods and system for carrier frequency offset (CFO) estimation are described. The method includes determining correlation values between a plurality of samples from a received signal and a plurality of reference signals corresponding to a plurality of CFO candidates. A set of correlation values which exceeds a threshold is determined and a corresponding CFO candidate for each correlation value in the set is selected. A CFO estimate based on an interpolation of selected CFO candidates is then calculated.