75 search results - page 5 / 15 » A Cognitive Transmission Scheme with the Best Relay Selectio... |
TSP
2010
13 years 2 months ago
2010
Effective spectrum sensing is a critical prerequisite for multi-channel cognitive radio (CR) networks, where multiple spectrum bands are sensed to identify transmission opportuniti...
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...
ICC
2008
IEEE
14 years 2 months ago
2008
IEEE
—Cognitive radio (CR) dynamically accessing inactive radio spectrum of the primary system (PS) at link level has attracted a lot of research interests. The cognitive radio networ...
MSWIM
2009
ACM
14 years 11 days ago
2009
ACM
Cognitive Radio (CR) technology constitutes a new paradigm to provide additional spectrum utilization opportunities in wireless ad hoc networks. Recent research in this field has ...
GLOBECOM
2007
IEEE
14 years 2 months ago
2007
IEEE
— In this paper, we investigate the channel selection strategy for secondary users in cognitive radio networks. We claim that in order to avoid the costly channel switchings, a s...