DÉVELOPPEMENT DE NOUVELLES STRUCTURES ET D'ALGORITHMES APPLIQUANT L'ÉCHANTILLONNAGE ALÉATOIRE POUR DES SYSTÈMES DE TYPES RADIO LOGICIELLE ET RADIO COGNITIVE

Abstract : In this work we apply random sampling in the context of software radio and cognitive radio. The use of random sampling makes it possible to overcome the aliasing constraint imposed by the uniform sampling case. The first part is dedicated to the key element of software radio systems which is the digital front-end. We present different methods for randomly sampled signals reconstruction and for channel filtering. We are interested by iterative methods due to their flexibility and convergence speed. Later we propose a new structure of the digital front-end based on the ADPW-GC iterative method for channel selection by applying random sampling in a software radio context. The performance of this method is analyzed in terms of complexity, quality of reconstructed signal and robustness and compared with classical structures. The second part, deals with the spectrum sensing which is one of the main functions of cognitive radio. The performance of these structures are evaluated and compared to the case of uniform sampling. After the theoretical and simulation studies, some applications are given in the context of software defined radio and cognitive radio based on real FM radio signals.
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/tel-01230573
Contributor : Sandrine Charlier <>
Submitted on : Wednesday, November 18, 2015 - 3:48:12 PM
Last modification on : Friday, April 19, 2019 - 3:48:42 PM
Document(s) archivé(s) le : Friday, April 28, 2017 - 10:07:09 PM

Licence


Public Domain

Identifiers

  • HAL Id : tel-01230573, version 1

Citation

Hayat Semlali. DÉVELOPPEMENT DE NOUVELLES STRUCTURES ET D'ALGORITHMES APPLIQUANT L'ÉCHANTILLONNAGE ALÉATOIRE POUR DES SYSTÈMES DE TYPES RADIO LOGICIELLE ET RADIO COGNITIVE. Sciences de l'ingénieur [physics]. UNIVERSITE DE NANTES, 2015. Français. ⟨tel-01230573⟩

Share

Metrics

Record views

241

Files downloads

555