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, Antennas and Optical Networks
Wenhui Cao
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Thomas Eriksson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Microwave and Wireless Components Letters
1531-1309 (ISSN) 15581764 (eISSN)
Vol. 31 8 961-964 9450812Subject Categories
Bioinformatics (Computational Biology)
Probability Theory and Statistics
Control Engineering
DOI
10.1109/LMWC.2021.3088255