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:
Mar. 20, 2012
Filed:
Sep. 29, 2008
Qicai Shi, Coral Springs, FL (US);
Neiyer S. Correal, Cooper City, FL (US);
Spyros Kyperountas, Weston, FL (US);
Zhuan YE, Vernon Hills, IL (US);
Qicai Shi, Coral Springs, FL (US);
Neiyer S. Correal, Cooper City, FL (US);
Spyros Kyperountas, Weston, FL (US);
Zhuan Ye, Vernon Hills, IL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A cognitive radio wireless device () dynamically manages signal detection in a cognitive radio system (). Spectrum sensing is performed for a first sensing frame on at least one communication channel. At least one observed signal is received () on the at least one communication channel. A detection decision () is performed to determine if the observed signal is noise or an active signal associated with an active user. The detection decision () is performed by comparing observed signal energy estimation with a current detection threshold. The current detection threshold can be an arbitrarily defined threshold or a detection threshold based on a previous detection decision for a sensing frame immediately prior to the first sensing frame.