230 search results - page 39 / 46 » Spectrum Management in Cognitive Radio Networks |
CISS
2008
IEEE
13 years 9 months ago
2008
IEEE
Cognitive radios permit dynamic control of physical layer resources such as transmission power and constellation size; these degrees of freedom can be employed to achieve significa...
CORR
2011
Springer
12 years 11 months ago
2011
Springer
—The fundamental problem of multiple secondary users contending for opportunistic spectrum access over multiple channels in cognitive radio networks has been formulated recently ...
MOBICOM
2009
ACM
14 years 6 days ago
2009
ACM
We consider the problem of cross-band interference when devices from the same or different networks share radio spectrum. Cross-band interference occurs when unsynchronized trans...
CN
2008
13 years 7 months ago
2008
The primary feature of cognitive radios for wireless communication systems is the capability to optimize the relevant communication parameters given a dynamic wireless channel env...
GLOBECOM
2009
IEEE
14 years 2 months ago
2009
IEEE
Abstract—Cognitive radio technologies have become a promising approach to increase the efficiency of spectrum utilization. Although cognitive radio has been intensively studied ...