Complexity Analysis of Wideband Power Amplifiers Linearization in Multi-band Signal Transmission for Massive MIMO systems
Paper in proceeding, 2020

Massive multi-input and multi-output (MIMO) systems request wideband power amplifiers (PA) for multi-band signal transmission. In this paper, we present different digital predistortion (DPD) techniques to linearize wideband PA with multi-band stimulus. We firstly propose a general form for pruned multi-band DPD models with low complexity. A study on the implementation complexities of different linearization methods is then analyzed. This paper provides a critical view on the metric of implementation complexity in function of the DPD model complexity and the sampling frequency of the signal processing. We finally propose a sampling frequency threshold to determine the best DPD solution according to the measurement results.

multi-band transmission

wideband power amplifiers

Digital predistortion

massive MIMO system

nonlinear distortion

Author

Siqi Wang

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

Wenhui Cao

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

Thomas Eriksson

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

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

960-963 9223943

2020 IEEE/MTT-S International Microwave Symposium (IMS)
Los Angeles, USA,

Subject Categories

Telecommunications

Information Science

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/IMS30576.2020.9223943

More information

Latest update

5/17/2021