A Polynomial Analog Baseband Predistorter for Compensation of Wireless Amplifier’s Distortion

Kouhini, Sepideh Mohammadi, Alizadeh Jarchlo, Elnaz, Khademi, Sasan, Ghassemlooy, Zabih and Alves, Luis Nero (2020) A Polynomial Analog Baseband Predistorter for Compensation of Wireless Amplifier’s Distortion. In: 2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP). Institute of Electrical and Electronics Engineers Inc., Piscataway, NJ, pp. 841-846. ISBN 9781728160511; 9781728167435

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Official URL: https://doi.org/10.1109/CSNDSP49049.2020.9249571

Abstract

This paper presents a new analog polynomial pre-distortion circuit using 350nm CMOS technology to reduce the distortion of the power amplifier in wireless communication systems. The proposed pre-distortion circuit uses the polynomial approach. The coefficients of the polynomial are controlled by multiplying them with sufficient digit defined through the indirect learning process to provide best practice linearization. Circuit level simulation of the proposed circuit is using Cadence DFW II is used as proof of concept. The simulation set-up comprises a power amplifier, excited with a four carrier GSM signal, pre-distorted by the proposed circuit. Simulation results show that using the pre-distortion circuit the 3rd order intermodulation distortion is reduced on average by 12 and 16 dB.

Item Type: Book Section
Additional Information: Funding information: This work was supported by a project called APIC (Analog Predistorter in Integrated Circuit), funded by the Institute Telecommunication of Aveiro and finalized during the H2020 VisIon 764461 project.
Uncontrolled Keywords: Analog pre-distortion, linearization, polynomial model, power amplifier
Subjects: G400 Computer Science
G500 Information Systems
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Rachel Branson
Date Deposited: 24 May 2021 13:46
Last Modified: 31 May 2021 14:37
URI: http://nrl.northumbria.ac.uk/id/eprint/46261

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