199 search results - page 39 / 40 » Multiple antenna spectrum sensing in cognitive radios |
ICCCN
2007
IEEE
15 years 3 months ago
2007
IEEE
— Wireless spectrum is a scare resource, while media streaming usually requires high end-to-end bandwidth. Media streaming in wireless ad hoc networks is therefore a particularly...
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INFOCOM
2012
IEEE
12 years 12 months ago
2012
IEEE
Abstract—Capacity scaling laws offer fundamental understanding on the trend of user throughput behavior when the network size increases. Since the seminal work of Gupta and Kumar...
GLOBECOM
2008
IEEE
15 years 4 months ago
2008
IEEE
— Accurate detection of spectrum opportunities within the frequency band of an orthogonal frequency division multiple access (OFDMA) system is a critical requirement for the real...
GLOBECOM
2007
IEEE
15 years 3 months ago
2007
IEEE
— We provide achievability as well as converse results for the degrees of freedom region of a MIMO X channel, i.e., a system with two transmitters, two receivers, each equipped w...
IPSN
2010
Springer
15 years 4 months ago
2010
Springer
Troubleshooting unresponsive sensor nodes is a significant challenge in remote sensor network deployments. This paper introduces the tele-diagnostic powertracer, an in-situ troub...