Statistical Modeling and Analysis of Power Amplifier Nonlinearities in Communication Systems
Journal article, 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.
matched filtering
Power amplifier nonlinearity
RF Weblab
Power amplifiers
statistical modeling
Communication systems
Distortion
Nonlinear distortion
optimum transceiver design
Hardware
Matched filters
pulse shaping
Analytical models
distortion analysis
Author
Mohammad Hossein Moghaddam
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Sina Rezaei Aghdam
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Nicolo Mazzali
European Space Agency (ESA)
Thomas Eriksson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
IEEE Transactions on Communications
00906778 (ISSN) 15580857 (eISSN)
Vol. 70 2 822-835Subject Categories (SSIF 2011)
Communication Systems
DOI
10.1109/TCOMM.2021.3139630