593 search results - page 36 / 119 » Cooperation and Cognitive Radio |
ICC
2009
IEEE
15 years 4 months ago
2009
IEEE
— Spectrum sensing, which monitors the spectrum activity, is studied for cognitive radio systems using multiple frequency bands with non-negligible band switching time (blind per...
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GLOBECOM
2007
IEEE
15 years 4 months ago
2007
IEEE
— In this paper, we investigate the channel selection strategy for secondary users in cognitive radio networks. We claim that in order to avoid the costly channel switchings, a s...
ISCAS
2007
IEEE
15 years 4 months ago
2007
IEEE
—A parallel, multi-resolution spectrum sensing technique that is amenable to multiple-antenna cognitive radios is introduced. We show that for energy-detector-type spectrum senso...
SECON
2007
IEEE
15 years 4 months ago
2007
IEEE
— Cognitive Radio systems face an important challenge – fast and reliable channel searching to enable secondary users to optimize available spectral resources. We revisit conve...
WIOPT
2010
IEEE
14 years 8 months ago
2010
IEEE
In this paper, we propose a comprehensive probabilistic framework which can be used to model and analyze cognitive radio (CR) network using carrier sensing (CS) based multiple acc...