11 search results - page 2 / 3 » Blind Spectrum Sensing for Cognitive Radio Based on Signal S... |
TSP
2010
12 years 11 months ago
2010
Abstract--A cooperative approach to the sensing task of wireless cognitive radio (CR) networks is introduced based on a basis expansion model of the power spectral density (PSD) ma...
ISSPIT
2010
12 years 12 months ago
2010
In a scenario where a cognitive radio unit wishes to transmit, it needs to know over which frequency bands it can operate. It can obtain this knowledge by estimating the power spe...
ICASSP
2011
IEEE
12 years 8 months ago
2011
IEEE
A nonparametric version of the basis pursuit method is developed for field estimation. The underlying model entails known bases, weighted by generic functions to be estimated fro...
GLOBECOM
2008
IEEE
13 years 11 months ago
2008
IEEE
Abstract— We present a collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple co-channel transmitters. A spectrum hole d...
GLOBECOM
2008
IEEE
13 years 11 months ago
2008
IEEE
— An opportunistic radio is a radio able to detect the spectrum unused bands, and to adapt its transmission parameters in order to transmit within these free bands. An opportunis...