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Title:	Enhanced cognitive radio operation through belief-based decision making
Author:	Pérez Romero, Jordi; Raschellà, Alessandro; Sallent Roig, José Oriol; Umbert Juliana, Anna
Other authors:	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
Abstract:	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.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica -Cognitive radio networks -Cognitive radio -Decision making -Belief vector -Spectrum selection -Ràdio cognitiva
Rights:	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Conference Object
Published by:	VDE Conference Publications
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