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:
Aug. 04, 2015
Filed:
Mar. 01, 2013
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventor:
Stephen J. Beauregard, San Jose, CA (US);
Assignee:
Qualcomm Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04W 64/00 (2009.01); G01S 5/02 (2010.01); G01S 11/10 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04L 43/00 (2013.01); G01S 5/0257 (2013.01); G01S 11/10 (2013.01); H04W 64/006 (2013.01); H04L 27/2647 (2013.01);
Abstract
Techniques are provided for deriving speed estimates by performing a convolution of the output of the Fast Fourier Transform (FFT) stage from different time windows in an orthogonal frequency-division multiplexing (OFDM) modulation scheme. Such techniques enable speed estimation to be performed in the frequency domain, requiring little or no modification to existing OFDM systems.