Títol:
|
Asymptotic error exponents in energy-detector and estimator-correlator signal detection
|
Autor/a:
|
Font Segura, Josep; Vázquez Grau, Gregorio; Riba Sagarra, Jaume
|
Altres autors:
|
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
Abstract:
|
The performance in signal detection is evaluated by the error (false-alarm and missed-detection) probabilities. However, calculating these probabilities is a difficult task in practice. This paper studies the asymptotic behavior of the energy-detector and the estimator-correlator by means of the Stein's lemma. The Stein's lemma is an information-theory result that provides the best achievable error exponent in the error probabilities when the number of observations goes to infinity. The derived closed-form expressions explain how detection performance is driven by the detector parameters and the second-order statistics of the problem. More specifically, it is shown that the error exponents depend on the signal-to-noise ratio (SNR) and the observation size. The prime focus is to establish a link between the required observation size for a fixed error probability as a function of the SNR. Numerical results show the tightness of the lemma. |
Abstract:
|
Peer Reviewed |
Matèries:
|
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal -Signal theory (Telecommunication) -Signal processing -Senyal, Teoria del (Telecomunicació) -Tractament del senyal |
Drets:
|
|
Tipus de document:
|
Article - Versió publicada Objecte de conferència |
Publicat per:
|
IEEE Computational Intelligence Society
|
Compartir:
|
|