21 search results - page 3 / 5 » Spectrum Sensing by Cognitive Radios at Very Low SNR |
ICC
2009
IEEE
14 years 24 days ago
2009
IEEE
—In this paper, we present a composite hypothesis testing approach for cooperative spectrum sensing. We derive the optimal likelihood ratio test (LRT) statistic based on the Neym...
VTC
2008
IEEE
14 years 12 days ago
2008
IEEE
This paper considers a scenario in which a secondary user makes opportunistic use of a channel allocated to some primary network. The primary network operates in a time-slotted ma...
CORR
2011
Springer
13 years 1 months ago
2011
Springer
Spectrum management has been identified as a crucial step towards enabling the technology of the cognitive radio network (CRN). Most of the current works dealing with spectrum ma...
VTC
2008
IEEE
14 years 12 days ago
2008
IEEE
— We consider a resource allocation problem for spectrum sharing in cognitive radio networks. Specifically, we investigate the joint subchannel, rate and power allocation for se...
ASIAMS
2009
IEEE
14 years 26 days ago
2009
IEEE
Cognitive radio has the ability to sense the environment and adapt its behavior to optimize communication features, such as quality of service in the presence of interference and ...