Concurrent Multiband Linearization for Power Amplifiers With Intermodulation Distortions
Journal article, 2022

This letter investigates digital predistortion (DPD) models for concurrent multiband (MB) transmitters, considering intermodulations (IMDs) fully and partially overlapping with in-band carriers. In order to mitigate the issue of increasing complexity of IMD terms construction, a novel prefrequency shift MB DPD technique is proposed to translate the baseband input signals in frequency by carrier frequencies. Theoretical analysis is provided to justify the prefrequency shift technique. Experimental measurements have been carried out with a quad-band signal to validate the effectiveness of the proposed technique.

intermodulations (IMDs)

Bandwidth

prefrequency shift.

Baseband

Linearity

Concurrent multiband (MB)

Peak to average power ratio

Base stations

digital predistortion (DPD)

Intermodulation distortion

Wireless communication

Author

Wenhui Cao

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Siqi Wang

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Thomas Eriksson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN) 15581764 (eISSN)

Vol. 32 5 467-470

Subject Categories

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/LMWC.2021.3131493

More information

Latest update

7/4/2022 1