27 search results - page 1 / 6 » Exploiting Multi-Antennas for Opportunistic Spectrum Sharing... |
CORR
2007
Springer
13 years 4 months ago
2007
Springer
—In cognitive radio (CR) networks, there are scenarios where the secondary (lower priority) users intend to communicate with each other by opportunistically utilizing the transmi...
JSAC
2011
12 years 11 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...
TON
2010
12 years 11 months ago
2010
The cognitive radio (CR) paradigm calls for open spectrum access according to a predetermined etiquette. Under this paradigm, CR nodes access the spectrum opportunistically by cont...
GLOBECOM
2009
IEEE
13 years 11 months ago
2009
IEEE
Abstract—Cognitive Radio Networks aim at enhancing spectrum utilization by allowing cognitive devices to opportunistically access vast portions of the spectrum. To reach such amb...
CN
2006
13 years 4 months ago
2006
Today's wireless networks are characterized by a fixed spectrum assignment policy. However, a large portion of the assigned spectrum is used sporadically and geographical var...