193 search results - page 29 / 39 » Dynamic spectrum access policies for cognitive radio |
CN
2008
13 years 7 months ago
2008
Cognitive radios (CR) have the ability to dynamically adapt to local spectrum availability. In a network comprised of CR-enabled devices, layer-2 auto-configuration involves deter...
INFOCOM
2012
IEEE
11 years 10 months ago
2012
IEEE
—We study the capacity and delay scaling laws for cognitive radio network (CRN) with static primary users and heterogeneous mobile secondary users coexisting in the unit planar a...
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.,...
GLOBECOM
2008
IEEE
14 years 2 months ago
2008
IEEE
— In this paper we study the complexity of spectrum assignment problems in cognitive radio networks (CRNs) in the presence of several constraints. Although optimal spectrum assig...
INFOCOM
2008
IEEE
14 years 2 months ago
2008
IEEE
—We consider opportunistic spectrum access (OSA) strategies for a transmitter in a multichannel wireless system, where a channel may or may not be available and the transmitter m...