Bandpass delta sigma optimization using parameter identification

David Gautier (1) , Renaud Lemoine (2) , Francis Huin (2) , Smail Bachir (3) , Claude Duvanaud (3)

1 LAII [Poitiers] - Laboratoire d'automatique et d'informatique industrielle [EA 1219]
2 Chercheur indépendant
3 SIC

In this paper, a new method to optimize the noise shape of a bandpass delta sigma (BPDS) modulator for a digital transmitter is presented. The optimal coefficients of BPDS structure are obtained by minimization of a quadratic criterion based on prediction error. To demonstrate the effectiveness of this approach, simulated results for a 6th order BPDS structure are presented.

Mots clés: Delta-sigma modulation; Digital modulation; Feedback; Multiaccess communication; Noise shaping; Parameter estimation; Radio frequency; Radio transmitters; Signal to noise ratio; Transceivers

Domaines: Electronique; Automatique / Robotique

David Gautier, Renaud Lemoine, Francis Huin, Smail Bachir, Claude Duvanaud. Bandpass delta sigma optimization using parameter identification. TAISA Conference and IEEE Northeast Workshop on Circuits and Systems NEWCAS-TAISA, Jun 2008, Montreal, Canada. pp.209 - 212, ⟨10.1109/NEWCAS.2008.4606358⟩. ⟨hal-00782922⟩