230 search results - page 8 / 46 » Spectrum Management in Cognitive Radio Networks |
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
—Cognitive radio has been proposed in recent years to promote the spectrum utilization by exploiting the existence of spectrum holes. The heterogeneity of both spectrum availabil...
GLOBECOM
2010
IEEE
13 years 5 months ago
2010
IEEE
Abstract--Cognitive radio networks require fast and reliable spectrum sensing to achieve high network utilization by secondary users. Current optimization approaches to spectrum se...
ICC
2009
IEEE
14 years 2 months ago
2009
IEEE
— Spectrum handoff occurs when the primary users appear in the licensed band occupied by the secondary users. Spectrum handoff procedures aim to help the secondary users to vacat...
MOBIHOC
2007
ACM
14 years 7 months ago
2007
ACM
A number of studies have shown the abundance of unused spectrum in the TV bands. This is in stark contrast to the overcrowding of wireless devices in the ISM bands. A recent trend...
TSP
2011
13 years 2 months ago
2011
—In this paper, we investigate a selective relay spectrum sensing and best relay data transmission (SRSS-BRDT) scheme for multiple-relay cognitive radio networks. Specifically, ...