Détection du spectre basée sur la détection d'énergie dans la radio cognitive
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Avec l'utilisation rapide des communications sans fil � des fins personnelles, commerciales et gouvernementales, l'utilisation efficace du spectre est devenue un sujet d'int�r�t majeur. La plupart des bandes sous licence souffrent d'une sous-utilisation et d'une occupation spectrale insuffisante. La technologie de radio cognitive offre une solution prometteuse au probl�me de la faible occupation spectrale et de l'utilisation inefficace du spectre radio�lectrique sous licence. La d�tection du spectre est un �l�ment essentiel de la technologie de radio cognitive. La d�tection d'�nergie (ED) est l'une des techniques de d�tection du spectre les plus courantes pour la radio cognitive. Dans ce travail, j'ai propos� la cl� SDR RTL 2832U, qui convient � la m�thode de d�tection du spectre bas�e sur la d�tection d'�nergie. Dans cette exp�rience, nous captons le signal en temps r�el provenant de la BTS dans diff�rentes villes en zone rurale et urbaine � l'aide d'une cl� SDR RTL 2832U afin de d�terminer si la bande de fr�quence est disponible ou non. Le logiciel GNU Radio permet la mise en oeuvre de la technique de d�tection du spectre par d�tection d'�nergie � l'aide du RTL-SDR.
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