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INFOCOM
2011
IEEE
12 years 8 months ago
Opportunistic spectrum access for mobile cognitive radios
—Cognitive radios (CRs) can mitigate the impending spectrum scarcity problem by utilizing their capability of accessing licensed spectrum bands opportunistically. While most exis...
Alexander W. Min, Kyu-Han Kim, Jatinder Pal Singh,...
INFOCOM
2011
IEEE
12 years 8 months ago
Pricing-based spectrum access control in cognitive radio networks with random access
Abstract—Market-based mechanisms offer promising approaches for spectrum access in cognitive radio networks. In this paper, we focus on two market models, one with a monopoly pri...
Lei Yang, Hongseok Kim, Junshan Zhang, Mung Chiang...
GLOBECOM
2010
IEEE
13 years 3 months ago
Optimization of Periodic Channel Sensing by Secondary Users in a Cognitive Radio Network
With the employment of cognitive radio technology, dynamic spectrum management has the potential to solve the underused spectrum problem. In this paper, we introduce and compare tw...
Dongyue Xue, Xinbing Wang, Ekram Hossain
VTC
2008
IEEE
185views Communications» more  VTC 2008»
13 years 11 months ago
Opportunistic Spectrum Access for Energy-Constrained Cognitive Radios
This paper considers a scenario in which a secondary user makes opportunistic use of a channel allocated to some primary network. The primary network operates in a time-slotted ma...
Anh Tuan Hoang, Ying-Chang Liang, David Tung Chong...
GLOBECOM
2010
IEEE
13 years 3 months ago
Joint Optimization of Spectrum Sensing for Cognitive Radio Networks
Abstract--Cognitive radio networks require fast and reliable spectrum sensing to achieve high network utilization by secondary users. Current optimization approaches to spectrum se...
Ling Luo, Chittabrata Ghosh, Sumit Roy