593 search results - page 33 / 119 » Cooperation and Cognitive Radio |
GLOBECOM
2009
IEEE
15 years 1 months ago
2009
IEEE
In this paper, cognitive transmission under quality of service (QoS) constraints is studied. In the cognitive radio channel model, it is assumed that the secondary transmitter sen...
91
Voted
JSAC
2007
14 years 9 months ago
2007
Abstract— We investigate the capacity of opportunistic communication in the presence of dynamic and distributed spectral activity, i.e. when the time varying spectral holes sense...
87
Voted
JSAC
2011
14 years 4 months ago
2011
—Various spectrum management schemes have been proposed in recent years to improve the spectrum utilization in cognitive radio networks. However, few of them have considered the ...
75
Voted
ICC
2007
IEEE
15 years 4 months ago
2007
IEEE
—Cognitive radio (CR) is seen as one of the revolutionary techniques for future spectrum utilization. The first and probably the most challenging task for CR is to detect/sense t...
71
Voted
ICC
2007
IEEE
15 years 4 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...