273 search results - page 25 / 55 » Satellite Navigation: New Signals, New Challenges |
GLOBECOM
2008
IEEE
14 years 4 months ago
2008
IEEE
—Research in cognitive radios has renewed interest in tools, such as spectrum estimation and modulation identification, to characterize the radio frequency (RF) environment. The...
ICCAD
1994
IEEE
14 years 2 months ago
1994
IEEE
Abstract - Today's digital design systems are running out of steam, when it comes to meeting the challenges presented by simultaneous switching, power consumption and reliabil...
EDBTW
2006
Springer
14 years 1 months ago
2006
Springer
Geospatial image data obtained by satellites and aircraft are increasingly important to a wide range of applications, such as disaster management, climatology, and environmental m...
ICDE
2007
IEEE
14 years 11 months ago
2007
IEEE
Estimating the selectivity of queries is a crucial problem in database systems. Virtually all database systems rely on the use of selectivity estimates to choose amongst the many ...
XSYM
2010
Springer
13 years 8 months ago
2010
Springer
Keys for XML data trees can uniquely identify nodes based on the data values on some of their subnodes, either in the entire tree or relatively to some selected subtrees. Such keys...