332 search results - page 40 / 67 » Opportunistic Spectrum Access in Cognitive Radio Networks |
107
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ICUMT
2009
14 years 7 months ago
2009
Abstract-- We consider the problem of Spectrum Sensing in Cognitive Radio Networks. In our previous work we have developed DualCUSUM, a distributed algorithm for change detection a...
74
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GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
— An opportunistic radio is a radio able to detect the spectrum unused bands, and to adapt its transmission parameters in order to transmit within these free bands. An opportunis...
110
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TSP
2012
13 years 5 months ago
2012
Abstract—We consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive...
109
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GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
Abstract--Wireless networks, especially mobile ad hoc networks (MANET) and cognitive radio networks (CRN), are facing two new challenges beyond traditional random network model: op...
ICC
2009
IEEE
15 years 4 months ago
2009
IEEE
—In this paper, we present a composite hypothesis testing approach for cooperative spectrum sensing. We derive the optimal likelihood ratio test (LRT) statistic based on the Neym...