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Títol: Strengthening radio environment maps with primary-user statistical patterns for enhancing cognitive radio operation
Autor: Bouali, Faouzi
Sallent Roig, José Oriol
Pérez Romero, Jordi
Agustí Comes, Ramon
Altres autors/autores: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
Matèries: Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils
Cognitive radio
Ràdio cognitiva
Tipus de document: Conference report
Descripció: In order to increase spectrum utilization efficiency, CRs (Cognitive Radios) have been introduced to reuse white spaces left unused by legacy services under the strict constraint of not interfering them. In order to fulfill this constraint while optimising spectrum utilisation, it is important to get knowledge about primary-user activity in order to devise proper strategies for secondary-user operation. In this context, this paper proposes to strengthen Radio Environment Maps (REM) with statistical patterns of primary systems that capture among others temporal dependence structures between activity (ON) and inactivity (OFF) periods. Convergence times for the different statistics are analysed. Then, a set of novel spectrum selection criteria exploiting these statistics are proposed and assessed to benchmark the usefulness of primary statistical patterns retained in the REM. Results show that significant performance gains can be achieved in terms of a reduction in the number of required spectrum hand-overs.
Peer Reviewed
Postprint (published version)
Altres identificadors i accés: Bouali, F. [et al.]. Strengthening radio environment maps with primary-user statistical patterns for enhancing cognitive radio operation. A: International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications. "Sixth International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2011". Osaka: 2011, p. 256-260.
978-1-4577-0140-5
http://hdl.handle.net/2117/15374
Disponible al dipòsit:E-prints UPC
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