170 search results - page 34 / 34 » Cognitive Transmissions with Multiple Relays in Cognitive Ra... |
INFOCOM
2010
IEEE
13 years 2 months ago
2010
IEEE
Traditional wireless broadcast protocols rely heavily on the 802.11-based CSMA/CA model, which avoids interference and collision by conservatively scheduling transmissions. While C...
JSAC
2008
13 years 4 months ago
2008
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 must...
ICC
2008
IEEE
13 years 11 months ago
2008
IEEE
—We consider opportunistic communications over multiple channels where the state (“good” or “bad”) of each channel evolves as independent and identically distributed Mark...
GLOBECOM
2010
IEEE
13 years 2 months ago
2010
IEEE
Abstract--Wireless networks, especially mobile ad hoc networks (MANET) and cognitive radio networks (CRN), are facing two new challenges beyond traditional random network model: op...
GLOBECOM
2009
IEEE
13 years 8 months ago
2009
IEEE
IEEE 802.22 wireless regional area network (WRAN) is an emerging cognitive radio-based system. One of the major challenges for WRANs is how to efficiently schedule both channel sen...