174 search results - page 4 / 35 » Optimization of Periodic Channel Sensing by Secondary Users ... |
GLOBECOM
2007
IEEE
13 years 11 months ago
2007
IEEE
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
GLOBECOM
2007
IEEE
13 years 11 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...
GLOBECOM
2010
IEEE
13 years 3 months ago
2010
IEEE
This paper investigates how to characterize the effect of multiple spectrum handoff delay on the extended data delivery time of the secondary users' connections in cognitive r...
CISS
2010
IEEE
12 years 9 months ago
2010
IEEE
—This paper presents the system level performance evaluation for energy-detection based cooperative spectrum sensing in cognitive radio networks. Three performance criteria are q...
ICUMT
2009
13 years 3 months ago
2009
Abstract-- We consider the problem of Spectrum Sensing in Cognitive Radio Networks. In our previous work we have developed DualCUSUM, a distributed algorithm for change detection a...