193 search results - page 21 / 39 » Dynamic spectrum access policies for cognitive radio |
CORR
2010
Springer
13 years 7 months ago
2010
Springer
Abstract--In cognitive radio (CR) networks with multipleinput multiple-output (MIMO) links, secondary users (SUs) can exploit "spectrum holes" in the space domain to acce...
TWC
2008
13 years 7 months ago
2008
We consider a secondary usage of spectrum scenario where a secondary network coexists and/or shares the radio spectrum with a primary network to which the spectrum is licensed. The...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
—The discrepancy between perceived spectrum shortage from the FCC allocation map and the actual abundance of available spectrum is a motivation for Cognitive Radios, which locate...
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
— Collaborative spectrum sensing among secondary users (SUs) in cognitive networks is shown to yield a significant performance improvement. However, there exists an inherent tra...
MOBICOM
2009
ACM
14 years 2 months ago
2009
ACM
Cognitive relays form a special cooperation relationship among users in cognitive radio networks, and help increase the transmission rates of both primary users and secondary user...