Sciweavers

GLOBECOM
2007
IEEE
14 years 6 months ago
Experiences Implementing Cognitive Radio Control Algorithms
— In recent years, several algorithms for controlling cognitive radio platforms have been proposed. In this paper, we review the existing approaches that have been developed for ...
Christian Doerr, Douglas C. Sicker, Dirk Grunwald
CISS
2008
IEEE
14 years 7 months ago
Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks
Cognitive radio is a desirable technique for secondary users to utilize the spectrum gray space. In order to avoid intolerable interference to primary users, the transmission powe...
Juite Hwu, Jinying Chen, Xiaohua Li
CISS
2008
IEEE
14 years 7 months ago
Secure transmission power of cognitive radios for dynamic spectrum access applications
—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...
Xiaohua Li, Jinying Chen, Fan Ng
ICASSP
2009
IEEE
14 years 7 months ago
A frequency hopping spread spectrum transmission scheme for uncoordinated cognitive radios
One of the major challenges to cognitive radios is the synchronization of distributed radios onto the same spectrum white spaces which vary in time and space. In this paper, we pr...
Xiaohua Li, Juite Hwu