Infinite Impulse Response Structure for Amplifier Modeling and Linearization
Artikel i vetenskaplig tidskrift, 2021

Digital predistortion (DPD) is used to compensate for the distortion of power amplifiers (PAs). Inspired by the physical structure of the PA circuit, a feedback structure in the DPD model is favored. In this letter, we proposed an infinite impulse response (IIR) model for PA modeling and linearization, by modifying a generalized memory polynomial (GMP) model. We also propose an iterative identification algorithm to estimate the IIR-DPD coefficients. The experimental results shows that the proposed IIR-GMP model can improve linearization performance compared with the conventional methods.

Nonlinear filters

Wireless communication

Integrated circuit modeling

Stability analysis

power amplifiers (PAs)

Iterative algorithms

Predistortion

infinite impulse response (IIR)

Complexity theory

nonlinearity

Digital predistortion (DPD)

physical structure

Författare

Siqi Wang

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Wenhui Cao

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Thomas Eriksson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN)

Vol. 31 8 961-964

Ämneskategorier

Bioinformatik (beräkningsbiologi)

Sannolikhetsteori och statistik

Reglerteknik

DOI

10.1109/LMWC.2021.3088255

Mer information

Senast uppdaterat

2021-08-24