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PIMRC
2010
IEEE
13 years 7 months ago
Opportunistic channel access scheme for cognitive radio system based on residual white space distribution
We propose an opportunistic channel access scheme for cognitive radio-enabled secondary networks. In our work, we model the channel occupancy due to Primary User (PU) activity as a...
Manuj Sharma, Anirudha Sahoo
SECON
2010
IEEE
13 years 7 months ago
Distributed Routing, Relay Selection, and Spectrum Allocation in Cognitive and Cooperative Ad Hoc Networks
Throughput maximization is a key challenge in cognitive radio ad hoc networks, where the availability of local spectrum resources may change from time to time and hopby-hop. To ach...
Lei Ding, Tommaso Melodia, Stella N. Batalama, Joh...
HCI
2009
13 years 7 months ago
Neurocognitive Workload Assessment Using the Virtual Reality Cognitive Performance Assessment Test
The traditional approach to assessing neurocognitive performance makes use of paper and pencil neuropsychological assessments. This received approach has been criticized as limited...
Thomas D. Parsons, Louise Cosand, Christopher G. C...
TIT
2011
193views more  TIT 2011»
13 years 4 months ago
Optimal Resource Allocation for MIMO Ad Hoc Cognitive Radio Networks
—Maximization of the weighted sum-rate of secondary users (SUs) possibly equipped with multiantenna transmitters and receivers is considered in the context of cognitive radio (CR...
Seung-Jun Kim, Georgios B. Giannakis
TWC
2010
13 years 4 months ago
Achievable rates for cognitive radios opportunistically permitting excessive secondary-to-primary interference
Abstract--We propose a cognitive radio system in fading environments where the secondary sender opportunistically violates the secondary-to-primary (S-P) interference power limit. ...
Woohyuk Chang, Sae-Young Chung, Yong Hoon Lee