2007 search results - page 118 / 402 » SPECTRUM |
112
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ICIP
2001
IEEE
16 years 5 months ago
2001
IEEE
New algorithms for computing the Discrete Fourier Transform (DFT) spectra along different directions are derived and implemented. For computing the DFT spectrum along any given di...
133
Voted
ICALP
2009
Springer
16 years 4 months ago
2009
Springer
We present a range of new results for testing properties of Boolean functions that are defined in terms of the Fourier spectrum. Broadly speaking, our results show that the propert...
164
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GLOBECOM
2009
IEEE
15 years 10 months ago
2009
IEEE
Abstract—Recent studies have been conducted to indicate the ineffective usage of licensed bands due to the static spectrum allocation. In order to improve the spectrum utilizatio...
109
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SIGCOMM
2009
ACM
15 years 10 months ago
2009
ACM
Networking over UHF white spaces is fundamentally different from conventional Wi-Fi along three axes: spatial variation, temporal variation, and fragmentation of the UHF spectrum....
136
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GLOBECOM
2008
IEEE
15 years 10 months ago
2008
IEEE
—The cognitive radio based IEEE 802.22 wireless regional area network (WRAN) is designed to operate in the under–utilized TV bands by detecting and avoiding primary TV transmis...