2005 · 330 citations · 17 references
EngineeringComputer ScienceElectrical EngineeringComputer NetworksMarkov Decision ProcessesWireless CommunicationsCognitive RadioCommunication NetworksDecentralized ControlPartially Observable Markov Decision ProcessesSpectrum ManagementWireless NetworksCognitive Radio NetworksDynamic Spectrum AccessMarkov Decision ModelsNetwork Throughput AnalysisNetwork Throughput OptimizationOpportunistic Spectrum AccessSpectrum AccessSpectrum Sensing
We consider the problem of opportunistic dynamic spectrum access (DSA) in an ad hoc network in which unlicensed secondary users communicate through channels not used by the primary users. Decentralized cognitive medium access control protocols are presented that allow secondary users to recognize spectrum opportunity and transmit based on a partial observation of the instantaneous spectrum availability. Under a framework of partially observable Markov decision process (POMDP), we derive optimal and suboptimal decentralized strategies for the secondary users to decide which channel(s) to sense and access for the maximization of the overall network throughput
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The role of spread spectrum in packet radio networks
M.B. Pursley · Proceedings of the IEEE · 1987 · 254 citations
Dynamic spectrum allocation in composite reconfigurable wireless networks
P. Leaves, Klaus Moessner, Rahim Tafazolli et al. · IEEE Communications Magazine · 2004 · 159 citations