156 search results - page 28 / 32 » Opportunistic Spectrum Access for Energy-Constrained Cogniti... |
MOBICOM
2009
ACM
15 years 4 months ago
2009
ACM
In November 2008, the FCC ruled that the digital TV whitespaces be used for unlicensed access. This is an exciting development because DTV whitespaces are in the low frequency ran...
INFOCOM
2010
IEEE
14 years 8 months ago
2010
IEEE
—We venture beyond the “listen-before-talk” strategy that is common in many traditional cognitive radio access schemes. We exploit the bi-directional nature of most primary c...
ICC
2009
IEEE
15 years 4 months ago
2009
IEEE
— In this paper, we present an analytical model as well as a practical mechanism to detect denial of service (DoS) attacks on secondary users in dynamic spectrum access (DSA) net...
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TCOM
2010
14 years 8 months ago
2010
Dynamic spectrum access (DSA) is an integral part of cognitive radio technology aiming at efficient management of the available power and bandwidth resources. The present paper d...
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...