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Digital Linearizer Based on 1-Bit Quantizations
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0009-0004-1846-9496
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-6329-9132
2024 (English)In: 2024 IEEE 24th International Conference on Communication Technology (ICCT), Institute of Electrical and Electronics Engineers (IEEE) , 2024, p. 1659-1663Conference paper, Published paper (Refereed)
Abstract [en]

This paper introduces a novel low-complexity memoryless linearizer for suppression of distortion in analog frontends. It is based on our recently introduced linearizer which is inspired by neural networks, but with orders-of-magnitude lower complexity than conventional neural-networks considered in this context, and it can also outperform the conventional parallel memoryless Hammerstein linearizer. Further, it can be designed through matrix inversion and thereby the costly and time consuming numerical optimization traditionally used when training neural networks is avoided. The linearizer proposed in this paper is different in that it uses 1-bit quantizations as nonlinear activation functions and different bias values. These features enable a look-up table implementation which eliminates all but one of the multiplications and additions required for the linearization. Extensive simulations and comparisons are included in the paper, for distorted multi-tone signals and bandpass filtered white noise, which demonstrate the efficacy of the proposed linearizer.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2024. p. 1659-1663
Series
International Conference on Communication Technology (ICCT), ISSN 2576-7844, E-ISSN 2576-7828
Keywords [en]
Training;Band-pass filters;Quantization (signal);Costs;Nonlinear distortion;Neural networks;White noise;Table lookup;Computational complexity;Optimization;Analog-to-digital interfaces;nonlinear distortion;memoryless linearizer;1-bit quantization
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:liu:diva-213843DOI: 10.1109/ICCT62411.2024.10946352Scopus ID: 2-s2.0-105003156925ISBN: 9798350363760 (electronic)ISBN: 9798350363777 (print)OAI: oai:DiVA.org:liu-213843DiVA, id: diva2:1960996
Conference
International Conference on Communication Technology (ICCT), Chengdu, China, 18-20 October 2024
Projects
ELLIIT
Funder
ELLIIT - The Linköping‐Lund Initiative on IT and Mobile Communications, B02Available from: 2025-05-26 Created: 2025-05-26 Last updated: 2025-06-04Bibliographically approved

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Rodríguez Linares, DeijanyJohansson, Håkan

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Citation style
  • apa
  • ieee
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Language
  • de-DE
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  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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