159 search results - page 29 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
TWC
2008
13 years 7 months ago
2008
We consider a multi-channel opportunistic communication system where the states of these channels evolve as independent and statistically identical Markov chains (the Gilbert-Elli...
VTC
2007
IEEE
14 years 1 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...
WWIC
2005
Springer
14 years 1 months ago
2005
Springer
UMTS/WLAN integration offers considerable benefits for the users as well as for the mobile network. As soon as coverage is available, a mobile user should be able to switch seamle...
INFOCOM
2011
IEEE
12 years 11 months ago
2011
IEEE
—Spectrum sharing systems such as cognitive radio networks have drawn much attention recently due to their potential to resolve the conflict between increasing demand for spectr...
CONEXT
2009
ACM
13 years 8 months ago
2009
ACM
We consider the problem of providing ubiquitous yet affordable Internet connectivity to devices at home, at work, and on the move. In this context, we take advantage of two signif...