ICASSP
2010
IEEE
13 years 11 months ago
2010
IEEE
We consider a two-stage sensing scheme for cognitive radios where coarse sensing based on energy detection is performed in the first stage and, if required, fine sensing based o...
GLOBECOM
2008
IEEE
14 years 6 months ago
2008
IEEE
— Accurate detection of spectrum opportunities within the frequency band of an orthogonal frequency division multiple access (OFDMA) system is a critical requirement for the real...