Search results for "Semidefinite programming"

showing 2 items of 2 documents

Random Interruptions in Cooperation for Spectrum Sensing in Cognitive Radio Networks

2015

In this paper, a new cooperation structure for spectrum sensing in cognitive radio networks is proposed which outperforms the existing commonly-used ones in terms of energy efficiency. The efficiency is achieved in the proposed design by introducing random interruptions in the cooperation process between the sensing nodes and the fusion center, along with a compensation process at the fusion center. Regarding the hypothesis testing problem concerned, first, the proposed system behavior is thoroughly analyzed and its associated likelihood-ratio test (LRT) is provided. Next, based on a general linear fusion rule, statistics of the global test summary are derived and the sensing quality is cha…

FOS: Computer and information sciencesSemidefinite programmingMathematical optimizationta213Computer scienceInformation Theory (cs.IT)Computer Science - Information Theory010401 analytical chemistrydecision/data fusion020206 networking & telecommunications02 engineering and technology01 natural sciencesStatistical power0104 chemical sciencescooperative spectrum sensingCognitive radionon-ideal reporting channelsefficiency0202 electrical engineering electronic engineering information engineeringcognitive radio (CR)False alarmElectrical and Electronic EngineeringStatistical hypothesis testingEfficient energy use
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Nonfragile Gain-Scheduled Control for Discrete-Time Stochastic Systems with Randomly Occurring Sensor Saturations

2013

Published version of an article in the journal: Abstract and Applied Analysis. Also available from the publisher at: http://dx.doi.org/10.1155/2013/629621 Open Access This paper is devoted to tackling the control problem for a class of discrete-time stochastic systems with randomly occurring sensor saturations. The considered sensor saturation phenomenon is assumed to occur in a random way based on the time-varying Bernoulli distribution with measurable probability in real time. The aim of the paper is to design a nonfragile gain-scheduled controller with probability-dependent gains which can be achieved by solving a convex optimization problem via semidefinite programming method. Subsequen…

Semidefinite programmingMathematical optimizationArticle SubjectSaturation phenomenonApplied Mathematicslcsh:MathematicsControl (management)lcsh:QA1-939VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411Lyapunov functionalDiscrete time and continuous timeBernoulli distributionControl theoryConvex optimizationAnalysisMathematics
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