332 search results - page 65 / 67 » Opportunistic Spectrum Access in Cognitive Radio Networks |
SIGCOMM
2006
ACM
15 years 3 months ago
2006
ACM
The combination of unlicensed spectrum, cheap wireless interfaces and the inherent convenience of untethered computing have made 802.11-based networks ubiquitous in the enterprise...
106
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SIGCOMM
2005
ACM
15 years 3 months ago
2005
ACM
We consider wireless LANs such as IEEE 802.11 operating in the unlicensed radio spectrum. While their nominal bit rates have increased considerably, the MAC layer remains practica...
104
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ADHOC
2007
14 years 9 months ago
2007
Multi-hop relaying in cellular networks can greatly increase capacity and performance by exploiting the best available links to a base station. We envision an environment in which...
INFOCOM
2005
IEEE
15 years 3 months ago
2005
IEEE
— Even though multiple non-overlapped channels exist in the 2.4GHz and 5GHz spectrum, most IEEE 802.11-based multi-hop ad hoc networks today use only a single channel. As a resul...
104
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ICC
2008
IEEE
15 years 4 months ago
2008
IEEE
—In wireless communication systems, the signal strength/quality generally varies with the distances between transmitters and receivers. As a consequence, the throughput in the MA...