21 search results - page 1 / 5 » Spectrum Sensing by Cognitive Radios at Very Low SNR |
GLOBECOM
2009
IEEE
14 years 5 months ago
2009
IEEE
ICASSP
2010
IEEE
13 years 11 months ago
2010
IEEE
One of the key problems in cognitive radio (CR) is the detection of primary activity in order to determine which parts of the spectrum are available for opportunistic access. This...
GLOBECOM
2007
IEEE
14 years 5 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...
CISS
2010
IEEE
13 years 2 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 8 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...