Low-Complexity Digital Predistortion of Concurrent Multiband RF Power Amplifiers
Journal article, 2022
The complexity of digital predistortion (DPD) for the concurrent multiband (MB) power amplifier (PA) has been a bottleneck for 5G wireless communication. A low-complexity MB DPD model has been proposed to reduce the running time complexity of DPD models for concurrent MB scenarios. The proposed MB model can generate the Volterra format basis functions with odd orders, including in-band, cross-band, and intermodulation (IMD) basis terms for arbitrary carrier configurations with an arbitrary number of bands. The optimal basis functions within the band of interests will be selected using a basis-function search algorithm. The lower cost complexity and high model accuracy of the proposed MB model have been validated by the PA linearization experiments in comparison with the memory polynomial MB model.
low-cost complexity
Solid modeling
Computational modeling
digital predistortion (DPD)
Baseband
intermodulations (IMDs)
Concurrent multiband (MB)
Matching pursuit algorithms
Delays
modeling and/or linearization techniques
Complexity theory
odd orders
power amplifiers (PAs)
Predistortion
Author
Wenhui Cao
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Siqi Wang
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Per Landin
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Thomas Eriksson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Transactions on Microwave Theory and Techniques
0018-9480 (ISSN) 15579670 (eISSN)
Vol. 70 9 4308-4317Subject Categories
Bioinformatics (Computational Biology)
Embedded Systems
Control Engineering
DOI
10.1109/TMTT.2022.3193907