159 search results - page 4 / 32 » Dynamic Spectrum Access Using a Network Coded Cognitive Cont... |
VTC
2008
IEEE
14 years 2 months ago
2008
IEEE
This paper considers a scenario in which a secondary user makes opportunistic use of a channel allocated to some primary network. The primary network operates in a time-slotted ma...
WIOPT
2010
IEEE
13 years 6 months ago
2010
IEEE
—Cognitive radio networks provide the capability to share the wireless channel with licensed (primary) users in an opportunistic manner. Primary users have a license to operate i...
JSAC
2011
13 years 2 months ago
2011
Abstract—In decentralized cognitive radio (CR) networks, enabling the radios to establish a control channel (i.e., “rendezvous” to establish a link) is a challenging problem....
TCOM
2010
13 years 6 months ago
2010
Abstract—This paper considers an uplink time division multiple access (TDMA) cognitive radio network where multiple cognitive radios (secondary users) attempt to access a spect...
JSAC
2011
13 years 2 months ago
2011
—Opportunistic spectrum access creates the opening of under-utilized portions of the licensed spectrum for reuse, provided that the transmissions of secondary radios do not cause...