170 search results - page 19 / 34 » Cognitive Transmissions with Multiple Relays in Cognitive Ra... |
CISS
2010
IEEE
14 years 1 months ago
2010
IEEE
—This paper addresses optimal spectrum sensing in cognitive radio networks considering its system level cost that accounts for the local processing cost of sensing (sample collec...
INFOCOM
2012
IEEE
12 years 12 months ago
2012
IEEE
—In this paper we study the resource allocation in OFDM-based cognitive radio (CR) networks, under the consideration of many practical limitations such as imperfect spectrum sens...
WICON
2008
14 years 11 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...
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Voted
ICC
2009
IEEE
14 years 7 months ago
2009
IEEE
In this paper, we consider a secondary link sharing the spectrum with a primary link in a fading cognitive radio (CR) network. Instead of applying the conventional interference pow...
GLOBECOM
2008
IEEE
15 years 3 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...