405 search results - page 22 / 81 » Securing cognitive radio networks |
GLOBECOM
2007
IEEE
14 years 3 months ago
2007
IEEE
— Spectrum sensing is a key enabling functionality in cognitive radio (CR) networks, where the CRs act as secondary users that opportunistically access free frequency bands. Due ...
ICC
2011
IEEE
12 years 8 months ago
2011
IEEE
—In cognitive radio (CR) networks, licensed spectrum that can be shared by secondary users (SUs) is always restricted by the needs of primary users (PUs). Although channel aggreg...
WCNC
2010
IEEE
2010
IEEE
Hedonic Coalition Formation Games for Secondary Base Station Cooperation in Cognitive Radio Networks
14 years 21 days ago
— In order to maintain a conflict-free environment among licensed primary users (PUs) and unlicensed secondary users (SUs) in cognitive radio networks, providing frequency and g...
GLOBECOM
2010
IEEE
13 years 6 months ago
2010
IEEE
In a cognitive radio network, the full-spectrum is usually divided into multiple channels. However, due to the hardware and energy constraints, a cognitive user (also called second...
ICASSP
2010
IEEE
13 years 9 months ago
2010
IEEE
—We consider a cognitive radio network with distributed multiple secondary users, where each user independently searches for spectrum opportunities in multiple channels without e...