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. 28, 2013
Filed:
Jun. 30, 2008
Yadunandana N. Rao, Sunrise, FL (US);
Apoorv Chaudhri, Sunrise, FL (US);
Robert J. Corke, Glen Ellyn, IL (US);
Yadunandana N. Rao, Sunrise, FL (US);
Apoorv Chaudhri, Sunrise, FL (US);
Robert J. Corke, Glen Ellyn, IL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
Efficient frequency spectrum sharing between at least one incumbent communication system(s) () and at least one cognitive radio (CR) system () is provided. The CR unit includes OFDM detection () for detecting the presence of OFDM signals which indicate the presence of an incumbent communication system within the shared spectrum. The CR system () updates channel occupancy information in response to the detected OFDM signals so as not to interfere with the incumbent communication systems ().