Statistical Modeling and Analysis of Power Amplifier Nonlinearities in Communication Systems
Artikel i vetenskaplig tidskrift, 2022

Hardware impairments in general and amplifier nonlinearity in particular severely limit the performance of communication links. This paper analytically provides statistical results on how a nonlinear amplifier affects the quality of signals in communication systems. In particular, we propose a statistical model that describes the nonlinear distortion as a function of the input signal’s average and instantaneous power and captures the pulse-shaping and matched filters’ effects. We show through simulations and complementary measurements that the proposed model can provide an authentic connection between the communication system parameters, power amplifier nonlinearity characteristics, and the communication system performance. It serves not only as a reliable model for nonlinear distortion analysis but also as a design tool that allows optimization of signal and filter characteristics with respect to nonlinear distortion.

Power amplifiers


optimum transceiver design

matched filtering

Matched filters

Nonlinear distortion

statistical modeling


Communication systems

distortion analysis

Analytical models

RF Weblab

pulse shaping

Power amplifier nonlinearity


Mohammad Hossein Moghaddam

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Sina Rezaei Aghdam

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Nicolo Mazzali

European Space Research and Technology Centre (ESA ESTEC)

Thomas Eriksson

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Transactions on Communications

00906778 (ISSN) 15580857 (eISSN)

Vol. 70 2 822-835





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