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230
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JSAC
2011
15 years 1 months ago
2011
Abstract—Cognitive radio (CR) technology enables the opportunistic use of the vacant licensed frequency bands, thereby improving the spectrum utilization. However, the CR operati...
222
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TMC
2011
15 years 1 months ago
2011
—Mission-driven sensor networks usually have special lifetime requirements. However, the density of the sensors may not be large enough to satisfy the coverage requirement while ...
197
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ICCV
2003
IEEE
16 years 8 months ago
2003
IEEE
Estimating the number of people in a crowded environment is a central task in civilian surveillance. Most vision-based counting techniques depend on detecting individuals in order...
175
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EWSN
2009
Springer
16 years 7 months ago
2009
Springer
As the number of wireless devices sharing the unlicensed 2.4 GHz ISM band increases, interference is becoming a problem of paramount importance. We experimentally investigate the e...
169
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CHI
2005
ACM
16 years 7 months ago
2005
ACM
The iBand is a wearable bracelet-like device that exchanges information about its users and their relationships. This exchange happens during the common gesture of the handshake, ...