170 search results - page 31 / 34 » Cognitive Transmissions with Multiple Relays in Cognitive Ra... |
INFOCOM
2008
IEEE
15 years 3 months ago
2008
IEEE
—We consider opportunistic spectrum access (OSA) strategies for a transmitter in a multichannel wireless system, where a channel may or may not be available and the transmitter m...
ICASSP
2009
IEEE
15 years 4 months ago
2009
IEEE
A Bayesian formulation of quickest change detection in multiple onoff processes is obtained within a decision-theoretic framework. For geometrically distributed busy and idle time...
WIOPT
2011
IEEE
14 years 1 months ago
2011
IEEE
Abstract—This paper considers maximizing throughput utility in a multi-user network with partially observable Markov ON/OFF channels. Instantaneous channel states are never known...
VTC
2007
IEEE
15 years 3 months ago
2007
IEEE
— With the advent of cognitive radio technology, new paradigms for spectrum access can achieve near-optimal spectrum utilization by letting users sense and utilize available spec...
GLOBECOM
2008
IEEE
15 years 3 months ago
2008
IEEE
—The cognitive radio based IEEE 802.22 wireless regional area network (WRAN) is designed to operate in the under–utilized TV bands by detecting and avoiding primary TV transmis...