332 search results - page 46 / 67 » Opportunistic Spectrum Access in Cognitive Radio Networks |
97
Voted
ICC
2008
IEEE
15 years 4 months ago
2008
IEEE
—To improve the performance of spectrum sensing, cooperation among Cognitive Radios (CRs) has been proposed recently as an effective solution. Most existing works require either ...
JSAC
2008
14 years 9 months ago
2008
A cognitive radio (CR) network is often described as a secondary network operating in a frequency band originally licensed/allocated to a primary network consisting of one or multi...
71
Voted
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
—The IEEE 802.22 standard for wireless regional area network is the first standard for cognitive radio that tries to harness the idle or under-utilized spectrum allocated for TV...
93
Voted
INFOCOM
2010
IEEE
14 years 8 months ago
2010
IEEE
Abstract—The queueing performance of a (secondary) cognitive user is investigated for a hierarchical network where there are N independent and identical primary users. Each prima...
113
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INFOCOM
2012
IEEE
13 years 3 days ago
2012
IEEE
Cognitive radio (CR) techniques improve the spectrum utilization by exploiting temporarily-free frequency bands (i.e., in the time domain). The spectrum utilization can be boosted...