Search results for "Spectrum adaptation"

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Modeling and Performance Analysis of Channel Assembling in Multichannel Cognitive Radio Networks With Spectrum Adaptation

2012

[EN] To accommodate spectrum access in multichannel cognitive radio networks (CRNs), the channel-assembling technique, which combines several channels together as one channel, has been proposed in many medium access control (MAC) protocols. However, analytical models for CRNs enabled with this technique have not been thoroughly investigated. In this paper, two representative channel-assembling strategies that consider spectrum adaptation and heterogeneous traffic are proposed, and the performance of these strategies is evaluated based on the proposed continuous-time Markov chain (CTMC) models. Moreover, approximations of these models in the quasistationary regime are analyzed, and closed-fo…

Computer Networks and CommunicationsComputer scienceAerospace EngineeringMarkov process02 engineering and technologyContinuous-time Markov chain (CTMC) modelsChannel assemblingsymbols.namesake0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringCognitive radio networks (CRNs)Electrical and Electronic EngineeringAdaptation (computer science)SimulationMarkov chainPerformance analysisSpectrum (functional analysis)020206 networking & telecommunications020302 automobile design & engineeringINGENIERIA TELEMATICACognitive radioAutomotive EngineeringsymbolsSpectrum adaptationAlgorithmCommunication channelIEEE Transactions on Vehicular Technology
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