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

Författare

Siqi Wang

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Wenhui Cao

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Thomas Eriksson

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

960-963 9223943

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

Ämneskategorier

Telekommunikation

Systemvetenskap

Annan elektroteknik och elektronik

DOI

10.1109/IMS30576.2020.9223943

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Senast uppdaterat

2021-05-17