Invention Application
- Patent Title: METHOD AND APPARATUS FOR DETECTION OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SIGNALS BY COGNITIVE RADIOS
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Application No.: PCT/US2009/047874Application Date: 2009-06-19
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Publication No.: WO2010002606A3Publication Date: 2010-01-07
- Inventor: RAO, Yadunandana, N. , CHAUDHRI, Apoorv , CORKE, Robert, J.
- Applicant: MOTOROLA, INC. , RAO, Yadunandana, N. , CHAUDHRI, Apoorv , CORKE, Robert, J.
- Applicant Address: 1303 E. Algonquin Road Schaumburg, IL 60196 US
- Assignee: MOTOROLA, INC.,RAO, Yadunandana, N.,CHAUDHRI, Apoorv,CORKE, Robert, J.
- Current Assignee: MOTOROLA, INC.,RAO, Yadunandana, N.,CHAUDHRI, Apoorv,CORKE, Robert, J.
- Current Assignee Address: 1303 E. Algonquin Road Schaumburg, IL 60196 US
- Agency: DOUTRE, Barbara R. et al.
- Priority: US12/165,597 20080630
- Main IPC: H04L27/26
- IPC: H04L27/26 ; H04W16/14
Abstract:
Efficient frequency spectrum sharing between at least one incumbent communication system(s) (102, 104) and at least one cognitive radio (CR) system (106, 108) is provided. The CR unit includes OFDM detection (216) for detecting the presence of OFDM signals which indicate the presence of an incumbent communication system within the shared spectrum. The CR system (106) updates channel occupancy information in response to the detected OFDM signals so as not to interfere with the incumbent communication systems (102, 104).
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