|
Title:
|
Método de detección de usuarios primarios utilizando una descomposición wavelet
|
|
Author:
|
Medina Acosta, Gerardo Agni; Delgado Penin, José Antonio
|
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. CMC - Control, Monitorització i Comunicacions |
|
Abstract:
|
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. |
|
Abstract:
|
Peer Reviewed |
|
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
-Wavelet decomposition
-Cognitive Radio
-Wavelet.
-Sistemes radioelectrics -- Detecció |
|
Rights:
|
|
|
Document type:
|
Article - Published version
Conference Object |
|
Share:
|
|
