169 search results - page 26 / 34 » Opportunistic spectrum access for mobile cognitive radios |
MOBICOM
2009
ACM
14 years 2 months ago
2009
ACM
Establishing a control channel for medium access control is a challenging problem in multi-channel and dynamic spectrum access (DSA) networks. In the design of multi-channel MAC p...
VTC
2006
IEEE
14 years 1 months ago
2006
IEEE
— The European IST research projects WINNER and WINNER II aim at developing a single new ubiquitous radio access system concept that can be adapted for use in a wide variety of m...
PIMRC
2010
IEEE
13 years 5 months ago
2010
IEEE
Abstract--Dynamic spectrum access (DSA) supporting opportunistic transmission without extra spectrum bandwidth is attractive for future wireless communication. To facilitate such D...
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...
INFOCOM
2012
IEEE
11 years 10 months ago
2012
IEEE
Cognitive radio gives users the ability to switch channels and make use of dynamic spectral opportunities. However, switching channels takes time, and may disrupt the quality of a...