43 search results - page 1 / 9 » Spectral Efficiency of Cognitive Radio Systems |
GLOBECOM
2007
IEEE
13 years 8 months ago
2007
IEEE
In this contribution1 , we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband sy...
ICASSP
2010
IEEE
13 years 4 months ago
2010
IEEE
In Cognitive Radio scenarios channelization information from primary network may be available to the spectral monitor. Under this assumption we propose a spectral estimation algor...
MONET
2008
13 years 3 months ago
2008
This paper presents the performance comparison of efficiency. OFDM is well known as a spectrally efficient Cognitive Radio TDCS and OFDM based for MIMO system modulation mode which...
JSAC
2007
13 years 4 months ago
2007
Abstract— We investigate the capacity of opportunistic communication in the presence of dynamic and distributed spectral activity, i.e. when the time varying spectral holes sense...
WICON
2008
13 years 5 months ago
2008
Cognitive radio networks that allow dynamic spectrum access are considered spectrally more efficient than networks using fixed spectral allocation. These networks are characterize...