2007 search results - page 91 / 402 » SPECTRUM |
164
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INFOCOM
2009
IEEE
16 years 8 days ago
2009
IEEE
—In cognitive wireless networks where secondary users (SUs) opportunistically access spectral white spaces of primary users (PUs), there exists an inherent tradeoff between sensi...
127
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INFOCOM
2009
IEEE
16 years 8 days ago
2009
IEEE
— Recently, the direct sequence spread-spectrum (DSSS)-based technique has been proposed to trace anonymous network flows. In this technique, homogeneous pseudo-noise (PN) codes...
160
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MOBICOM
2009
ACM
16 years 4 days ago
2009
ACM
Cognitive relays form a special cooperation relationship among users in cognitive radio networks, and help increase the transmission rates of both primary users and secondary user...
GLOBECOM
2008
IEEE
16 years 2 days ago
2008
IEEE
GLOBECOM
2008
IEEE
16 years 2 days ago
2008
IEEE
