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Enhanced cognitive radio operation through beliefbased decision making
Pérez Romero, Jordi; Raschellà, Alessandro; Sallent Roig, José Oriol; Umbert Juliana, Anna
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
This paper focuses on the analysis of the trade-off existing between achieved performance and observation requirements in a decision making framework based on the cognitive cycle. For that purpose, it presents a general belief based decision making framework that can be particularized for different observation strategies that decide when measurements are carried out to characterize the dynamics of the radio environment. While the concept can be applied to different cognitive radio problems, the paper focuses on the spectrum selection to establish a set of radio links. The considered observation strategies and associated decision making are assessed under different environment conditions in terms of the traffic generation patterns. Results reveal that both the session generation rate and the session duration play a key role to choose the adequate observation strategy that balances the achieved performance and the measurement requirements.
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radiodifusió per ràdio
Cognitive radio networks
Belief vector
Cognitive radio
Decision making
Spectrum selection
Ràdio cognitiva
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VDE Conference Publications
         

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