174 search results - page 32 / 35 » Optimization of Periodic Channel Sensing by Secondary Users ... |
GLOBECOM
2007
IEEE
13 years 11 months ago
2007
IEEE
— Motorola Labs implemented an experimental cognitive radio system for use at the Dynamic Spectrum Access Networks (DySPAN) Symposium 2007. To exercise a practical communication ...
WCNC
2008
IEEE
13 years 11 months ago
2008
IEEE
—In this paper, a wireless cognitive radio sensor network is considered, where each sensor node is equipped with cognitive radio and the network is a multi-carrier system operati...
GLOBECOM
2009
IEEE
13 years 12 months ago
2009
IEEE
Abstract— Two driving goals for cognitive radio (CR) technique are maximizing spectrum utilization and avoiding interference to primary users. In this paper, we deal with the CR ...
TWC
2010
12 years 12 months ago
2010
In cognitive radio networks, a cognitive source node requires two essential phases to complete a cognitive transmission process: the phase of spectrum sensing with a certain time d...
JSAC
2011
13 years 3 days ago
2011
This paper investigates the issue of dynamic resource allocation (DRA) in the context of multiuser cognitive radio networks. We present a general framework adopting generalized si...