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:
Sep. 29, 2015
Filed:
Jun. 17, 2011
Applicants:
Lars Sundström, Södra Sandby, SE;
Jim Svensson, Lund, SE;
Leif Wilhelmsson, Dalby, SE;
Inventors:
Assignee:
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 17/00 (2015.01); H04B 3/46 (2015.01); H04L 1/24 (2006.01); H04L 27/38 (2006.01); H04B 17/21 (2015.01); H04B 17/309 (2015.01); H04L 27/26 (2006.01); H04B 17/10 (2015.01); H04B 17/20 (2015.01);
U.S. Cl.
CPC ...
H04B 17/0042 (2013.01); H04B 3/46 (2013.01); H04B 17/21 (2015.01); H04B 17/309 (2015.01); H04L 1/244 (2013.01); H04L 27/3863 (2013.01); H04B 17/10 (2015.01); H04B 17/20 (2015.01); H04L 27/2647 (2013.01);
Abstract
A test signal for determining a frequency-dependent or any other property of a receiver path is proposed. The test signal comprises, in a time domain representation, a sequence of discrete states that may be periodically repeated and that gives rise to a plurality of discrete tones in a frequency domain representation of the test signal. The test signal can be utilized for determining a frequency-dependent imbalance (e.g., an IQ imbalance) between different signal branches of a receiver or transmitter.