174 search results - page 27 / 35 » Optimization of Periodic Channel Sensing by Secondary Users ... |
JSAC
2011
13 years 2 months ago
2011
This work on cognitive radio access ventures beyond the more traditional “listen-before-talk” paradigm that underlies many cognitive radio access proposals. We exploit the bi-...
WCNC
2010
IEEE
13 years 6 months ago
2010
IEEE
—Dynamic spectrum access (DSA) aims to improve spectrum efficiency via spectrum sensing and optimal spectrum access. An essential component in DSA is the joint design of sensing...
GLOBECOM
2008
IEEE
14 years 2 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...
WCNC
2008
IEEE
14 years 2 months ago
2008
IEEE
— In an opportunistic spectrum sharing system, secondary users equipped with cognitive radios opportunistically access spectrum that is not being used by the primary users, i.e.,...
ICASSP
2008
IEEE
14 years 2 months ago
2008
IEEE
Transmit-power control is a critical task in cognitive radio (CR) networks. In the present contribution, adherence to hierarchies between primary and secondary users in a peer-to-...