148 search results - page 7 / 30 » Spectrum Sensing in Wideband OFDM Cognitive Radios |
ICASSP
2010
IEEE
13 years 8 months ago
2010
IEEE
In Cognitive Radio scenarios channelization information from primary network may be available to the spectral monitor. Under this assumption we propose a spectral estimation algor...
CORR
2010
Springer
13 years 5 months ago
2010
Springer
Abstract--We consider cooperative spectrum sensing for cognitive radios. We develop an energy efficient detector with low detection delay using sequential hypothesis testing. Seque...
INFOCOM
2009
IEEE
14 years 3 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...
JSAC
2011
13 years 3 months ago
2011
This paper investigates the issue of dynamic resource allocation (DRA) in the context of multiuser cognitive radio networks. We present a general framework adopting generalized si...
GLOBECOM
2007
IEEE
14 years 2 months ago
2007
IEEE
—One of the main requirements of cognitive radio systems is the ability to reliably detect the presence of licensed primary transmissions. Previous works on the problem of detect...