Infinite Impulse Response Structure for Amplifier Modeling and Linearization
Journal article, 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

Author

Siqi Wang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Wenhui Cao

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Thomas Eriksson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN)

Vol. 31 8 961-964

Subject Categories

Bioinformatics (Computational Biology)

Probability Theory and Statistics

Control Engineering

DOI

10.1109/LMWC.2021.3088255

More information

Latest update

8/24/2021