Defensa de la tesi doctoral de Thi Quynh Anh Pham

El dimecres 18 de Desembre a les 11:30h, a la Sala d’Actes de l’EETAC (001Pg), Thi Quynh Anh Pham del departament de Teoria del Senyal i Comunicacions procedirà a la defensa pública de la seva tesi doctoral, titulada Contribution to Dimensionality Reduction of Digital Predistorter Behavioral Models for RF Power Amplifier Linearization.

Els directors de la tesi han estat en Pere L. Gilabert i en Gabriel Montoro, del departament de Teoria del Senyal i Comunicacions i professors a l'EETAC.

El resum del contingut de la tesi (en anglès) és el següent:

• This dissertation contributes to the dimensionality reduction of digital predistortion (DPD) linearizers for power amplifiers (PAs) with emphasis on the identification and adaptation subsystem. In particular, several dynamic model order reduction approaches based on feature extraction techniques are proposed. Thus, the minimum number of relevant DPD coefficients are dynamically selected and estimated in the DPD adaptation subsystem. The number of DPD coefficients is reduced, ensuring a well-conditioned LS estimation while demanding minimum hardware resources. The presented dynamic linearization approaches are evaluated and compared through experimental validation with an envelope tracking PA topology and a GaN HEMT-based class-J PA. The experimental results show that it is possible to obtain similar linearization performance than with the conventional LS solution but at lower computational cost.