COMMON POLE ESTIMATION WITH AN ORTHOGONAL VECTOR METHOD

Remy Boyer (1) , Guillaume Bouleux (2) , Karim Abed-Meraim (3)

1 L2S - Laboratoire des signaux et systèmes
2 LASPI - Laboratoire d'Analyse des Signaux et des Processus Industriels
3 LTCI - Laboratoire Traitement et Communication de l'Information

In some applications as in biomedical analysis, we encounter the problem of estimating the common poles (angularfrequency and damping-factor) in a multi-channel set-up composed as the sum of Exponentially Damped Sinusoids. In this contribution, we propose a new subspace algorithm belonging to the family of the Orthogonal Vector Methods which solves the considered estimation problem. In particular, we expose a root-MUSIC algorithm which deals with damped components for an algorithmic cost comparable to the root- MUSIC for constant modulus components. Finally, we show by means of an example, that the proposed method is efficient, especially for low SNRs.

Domaines: Traitement du signal et de l'image [eess.SP]

Remy Boyer, Guillaume Bouleux, Karim Abed-Meraim. COMMON POLE ESTIMATION WITH AN ORTHOGONAL VECTOR METHOD. European Signal Processing Conference (EUSIPCO 2006), 2006, Florence, Italy. ⟨hal-00577275⟩