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Título:
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Método de detección de usuarios primarios utilizando una descomposición wavelet
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Autor/a:
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Medina Acosta, Gerardo Agni; Delgado Penin, José Antonio
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Otros autores:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CMC - Control, Monitorització i Comunicacions |
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Abstract:
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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. |
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Abstract:
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Peer Reviewed |
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Materia(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
-Wavelet decomposition
-Cognitive Radio
-Wavelet.
-Sistemes radioelectrics -- Detecció |
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Derechos:
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Tipo de documento:
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Artículo - Versión publicada
Objeto de conferencia |
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