TWC
2008
14 years 5 days ago
2008
Abstract--We investigate the dynamic spectrum sharing problem among primary and secondary users in a cognitive radio network. We consider the scenario where primary users exhibit o...
TSP
2008
14 years 6 days ago
2008
The problem of opportunistic access of parallel channels occupied by primary users is considered. Under a continuous-time Markov chain modeling of the channel occupancy by the prim...
CORR
2008
Springer
14 years 12 days ago
2008
Springer
Abstract--We consider power control in cognitive radio networks where secondary users identify and exploit instantaneous and local spectrum opportunities without causing unacceptab...
CORR
2008
Springer
14 years 12 days ago
2008
Springer
We study two distinct, but overlapping, networks which operate at the same time, space and frequency. The first network consists of
WCNC
2010
IEEE
2010
IEEE
Hedonic Coalition Formation Games for Secondary Base Station Cooperation in Cognitive Radio Networks
14 years 4 months 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...
ICC
2007
IEEE
14 years 6 months ago
2007
IEEE
— In cognitive radio networks, the secondary network (users) are allowed to utilize the frequency bands of primary network (users) when they are not currently being used. To supp...
GLOBECOM
2007
IEEE
14 years 6 months ago
2007
IEEE
— We analyze the performance of a wireless system that allows opportunistic spectrum sharing. The system consists of a set of primary users sharing a set of channels over a cover...
WCNC
2008
IEEE
14 years 6 months ago
2008
IEEE
— In an opportunistic spectrum sharing (OSS) wireless network there are two types of users: primary users and secondary users. The primary users own the license for the system ba...
ICASSP
2008
IEEE
14 years 6 months ago
2008
IEEE
—We consider power control in spectrum overlay networks (also referred to as opportunistic spectrum access) where secondary users identify and exploit instantaneous and local spe...
CISS
2008
IEEE
14 years 6 months ago
2008
IEEE
—One of the major concerns of cognitive radios when used for secondary spectrum access is the potential of interfering primary users, considering especially that cognitive radios...