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GLOBECOM
2008
IEEE
12 years 8 months ago
Collaborative Opportunistic Spectrum Access in the Presence of Multiple Transmitters
Abstract— We present a collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple co-channel transmitters. A spectrum hole d...
Ahmed O. Nasif, Brian L. Mark
WCNC
2008
IEEE
12 years 8 months ago
Estimation of Interference-Free Transmit Power for Opportunistic Spectrum Access
Abstract— We consider a scenario in which frequency agile radios opportunistically share a fixed spectrum resource with a set of primary nodes. We develop a collaborative scheme...
Brian L. Mark, Ahmed O. Nasif
EJWCN
2010
141views more  EJWCN 2010»
11 years 8 months ago
Scheduling Heterogeneous Wireless Systems for Efficient Spectrum Access
The spectrum scarcity problem emerged in recent years, due to unbalanced utilization of RF (radio frequency) bands in the current state of wireless spectrum allocations. Spectrum a...
Lichun Bao, Shenghui Liao
GLOBECOM
2008
IEEE
12 years 8 months ago
The Gateway Channel: Outage Analysis
— We consider a relay that simultaneously assists multiple source-destination pairs that do not have a direct link, the so-called gateway channel, and explore the sum capacity of...
Mohamed Abouelseoud, Aria Nosratinia
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