2007 search results - page 53 / 402 » SPECTRUM |
70
Voted
EOR
2008
15 years 19 days ago
2008
A new network has been recently proposed for the provision of fixed broadband services via high altitude platform stations (HAPS) in the 48/47 GHz band. One of the critical issues...
ITIIS
2008
15 years 16 days ago
2008
In this paper, we propose a subcarrier allocation method and a composite linear minimum mean square error (LMMSE) channel estimator to increase spectrum efficiency in orthogonal f...
CHI
2009
ACM
14 years 10 months ago
2009
ACM
The Internet has become a place of refuge for individuals with autism spectrum disorders (ASD). In particular, weblogs are a popular option for personal expression via the Interne...
124
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CORR
2010
Springer
14 years 10 months ago
2010
Springer
Abstract--We consider cooperative spectrum sensing for cognitive radios. We develop an energy efficient detector with low detection delay using sequential hypothesis testing. Seque...
103
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ISSPIT
2010
14 years 7 months ago
2010
In a scenario where a cognitive radio unit wishes to transmit, it needs to know over which frequency bands it can operate. It can obtain this knowledge by estimating the power spe...