Método de detección de usuarios primarios utilizando una descomposición wavelet
Document typeConference lecture
Rights accessOpen Access
The sensing function is one of the most important features of cognitive radios since a reliable detection of available spectrum ensuring non-interference to licensed users is necessary to initiate a lower priority communication. In this paper, the proposal of a physical layer sensing method using the multiple-level wavelet decomposition analysis for the detection of primary users is presented. The proposed scheme consists of four stages (sampling, multiple-level decomposition analysis, coefficients analysis and evaluation criterion), where the energy percentage through the decomposed levels is proposed as a metric to determine if there is a high priority user present on the channel or not. For simulation purposes different input signals involving the presence/absence of a primary user as well as variations in the SNR were considered in order to evaluate the model.
CitationMedina, G.; Delgado-Penín, Josè A. Método de detección de usuarios primarios utilizando una descomposición wavelet. A: Simposium Nacional de la Unión Científica Internacional de Radio. "XXIV Simposium Nacional de la Unión Científica Internacional de Radio". Santander: 2009, p. 1-4.
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder