49 search results - page 4 / 10 » Cooperative Multi-relay Scheme for Secondary Spectrum Access |
114
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ICC
2008
IEEE
15 years 6 months ago
2008
IEEE
Abstract— The concept of cognitive radio (or secondary spectrum access) is currently under investigation as a promising paradigm to achieve efficient use of the frequency resour...
123
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JSAC
2011
14 years 6 months ago
2011
—We consider a wireless cognitive radio network in which a set of secondary users (SUs) opportunistically utilize the wireless spectrum licensed to the primary users (PUs) to tra...
VTC
2008
IEEE
15 years 6 months ago
2008
IEEE
— Sharing of the frequency spectrum between licensed primary users and unlicensed secondary users (SUs) requires reliable detection of spectrum occupancy by the SUs. Due to fadin...
GLOBECOM
2009
IEEE
15 years 6 months ago
2009
IEEE
— We propose and analyze a novel decentralized mechanism that motivates otherwise non-cooperative stations to participate as relays in cooperative ARQ protocol. Cooperation incen...
105
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GLOBECOM
2008
IEEE
15 years 6 months ago
2008
IEEE
Abstract— The coexistence and resource sharing between a primary network utilizing cognitive relays and a secondary network are investigated. Two multiple access protocols are pr...