199 search results - page 26 / 40 » Multiple antenna spectrum sensing in cognitive radios |
WICON
2008
15 years 1 months ago
2008
We consider the problem of efficient opportunistic spectrum access in cognitive radio networks where there are multiple secondary users trying to share access to multiple channels...
INFOCOM
2010
IEEE
14 years 10 months ago
2010
IEEE
Abstract—Spectrum sensing is one of the key enabling technologies in Cognitive Radio Networks (CRNs). In CRNs, secondary users (SUs) are allowed to exploit the spectrum opportuni...
113
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ICASSP
2011
IEEE
14 years 3 months ago
2011
IEEE
In cognitive radio (CR) networks, multi-CR cooperation typically takes place during spectrum sensing, to cope with wireless fading effects and the hidden terminal problem. The use...
115
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ICASSP
2011
IEEE
14 years 3 months ago
2011
IEEE
A problem of joint optimal bandwidth and power allocation in cognitive networks under fading channels is considered. It is assumed that multiple secondary users (SUs) share the sp...
119
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JSAC
2011
14 years 6 months ago
2011
—Opportunistic spectrum access creates the opening of under-utilized portions of the licensed spectrum for reuse, provided that the transmissions of secondary radios do not cause...