293 search results - page 22 / 59 » Opportunistic Multiple Access for Cognitive Radio Networks |
EJWCN
2010
14 years 4 months ago
2010
A tactical radio network is a radio network in which a transmitter broadcasts the same information to its receivers. In this paper, dynamic spectrum management is studied for multi...
129
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TWC
2010
14 years 4 months ago
2010
Abstract-- Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many w...
CISS
2008
IEEE
15 years 4 months ago
2008
IEEE
Abstract— According to the cognitive radio paradigm, a terminal or subsystem will opportunistically select a frequency band for data transmission. Because the spectrum is shared,...
BROADNETS
2004
IEEE
15 years 1 months ago
2004
IEEE
The IEEE 802.11 wireless media standard supports multiple frequency channels as well as multiple data rates at the physical (PHY) layer. Moreover, various auto rate adaptation mec...
103
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TWC
2010
14 years 4 months ago
2010
In this paper we propose a Dynamic Spectrum Access scheme which allows the users to opportunistically and efficiently access the channels available for communications. It addresses...