159 search results - page 3 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
TWC
2008
13 years 5 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
2010
IEEE
13 years 3 months ago
2010
IEEE
In a cognitive radio network, the full-spectrum is usually divided into multiple channels. However, due to the hardware and energy constraints, a cognitive user (also called second...
GLOBECOM
2010
IEEE
13 years 3 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...
INFOCOM
2010
IEEE
13 years 4 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...
GLOBECOM
2010
IEEE
13 years 3 months ago
2010
IEEE
Abstract-- We study joint rate control and resource allocation with QoS provisioning that maximizes the total utility of secondary users in cognitive radio networks. We formulate a...