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:
May. 21, 2002
Filed:
Jun. 28, 1999
Henry S. Eilts, Plano, TX (US);
Raytheon Company, Lexington, MA (US);
Abstract
A method of frequency offset estimation and correction for adaptive antennas comprises receiving in a processor samples of a data set having a training data sample sequence. A batch least squares weight solution is computed for the training data sample sequence to obtain a least square error for each sample. Each error sample is rotated by multiplying by the conjugate of a sample of the reference training sequence and each rotated error sample is numbered (in the order received). A straight line is fit to the imaginary part of the rotated error sample (as a function of sample number) to obtain a frequency offset estimate. Each sample in a time slot of the samples of a dataset is multiplied by a complex exponential function of the frequency offset estimate.