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JSAC
2011
14 years 4 months ago
2011
—We consider a wireless cognitive radio network in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed to the primary users (PUs) to tra...
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GLOBECOM
2010
IEEE
14 years 7 months ago
2010
IEEE
This paper investigates how to characterize the effect of multiple spectrum handoff delay on the extended data delivery time of the secondary users' connections in cognitive r...
GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
—In order to fully utilize spectrum, auction-based dynamic spectrum allocation has become a promising approach which allows unlicensed wireless users to lease unused bands from s...
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
In this paper, we study the eigenvalue-based spectrum sensing techniques for multiple-antenna cognitive radio networks. First, we study the extreme eigenvalue distributions of a c...
GLOBECOM
2009
IEEE
14 years 7 months ago
2009
IEEE
Collaborative spectrum sensing in cognitive radio networks has been proposed as an efficient way to improve the performance of primary users detection. In collaborative spectrum se...