193 search results - page 15 / 39 » Dynamic spectrum access policies for cognitive radio |
JSAC
2011
13 years 2 months ago
2011
—We consider a wireless cognitive radio network in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed to the primary users (PUs) to tra...
INFOCOM
2010
IEEE
13 years 6 months ago
2010
IEEE
—Cognitive Radio Networks (CRNs) have recently emerged as a promising technology to improve spectrum utilization by allowing secondary users to dynamically access idle primary ch...
TWC
2008
13 years 7 months ago
2008
Spectrum sensing is the key enabling technology for cognitive radio networks. The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive r...
GLOBECOM
2008
IEEE
14 years 2 months ago
2008
IEEE
Abstract— We present a collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple co-channel transmitters. A spectrum hole d...
MOBICOM
2009
ACM
14 years 2 months ago
2009
ACM
In cognitive radio networks (CRNs), spectrum sensing is key to opportunistic spectrum access while preventing any unacceptable interference to primary users’ communications. Alt...