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:
Nov. 24, 2015
Filed:
Feb. 04, 2013
Applicant:
Blackberry Limited, Waterloo, CA;
Inventors:
Dayong Chen, Kitchener, CA;
Yi Wen Liu, Waterloo, CA;
Assignee:
BlackBerry Limited, Waterloo, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/22 (2006.01); H03D 3/22 (2006.01); H04L 27/16 (2006.01);
U.S. Cl.
CPC ...
H04L 27/16 (2013.01);
Abstract
Systems and methods for frequency offset estimation are provided. A channel impulse response and multi-user signal parameter are jointly estimated. Based on the multi-user signal parameter, a determination is made as to whether the signal contains a single-user signal or a multi-user signal. Then, frequency offset estimation is performed based on this determination. For example, noiseless sample estimates are generated depending on whether the signal is a single-user signal or a multi-user signal.