99 search results - page 8 / 20 » Distributed multiaccess in hierarchical cognitive radio netw... |
IEEECIT
2010
IEEE
14 years 8 months ago
2010
IEEE
—In this paper, we present a new spectrum-hole prediction model for cognitive radio (CR) systems based on the IEEE 802.11 wireless local areas networks. We have also analyzed the...
MOBIHOC
2007
ACM
15 years 9 months ago
2007
ACM
A number of studies have shown the abundance of unused spectrum in the TV bands. This is in stark contrast to the overcrowding of wireless devices in the ISM bands. A recent trend...
PIMRC
2008
IEEE
15 years 4 months ago
2008
IEEE
—One of the major challenges in designing cellular Cognitive Radio (CR) networks is the avoidance of Secondary User (SU) interference to so called Primary Users (PUs) operating i...
GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
— In this paper, we study QoS routing in wireless mesh networks with cognitive radios, which involves route selection, channel allocation and scheduling. It turns out to be a har...
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GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
We consider the channel selection problem in a cognitive radio network with heterogenous channel availabilities at different nodes. We formulate the maximum channel selection (MCS)...