On Feedback Sample Selection Methods Allowing Lightweight Digital Predistorter Adaptation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU137373" target="_blank" >RIV/00216305:26220/20:PU137373 - isvavai.cz</a>
Result on the web
<a href="https://ieeexplore.ieee.org/document/9018116" target="_blank" >https://ieeexplore.ieee.org/document/9018116</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/TCSI.2020.2975532" target="_blank" >10.1109/TCSI.2020.2975532</a>
Alternative languages
Result language
angličtina
Original language name
On Feedback Sample Selection Methods Allowing Lightweight Digital Predistorter Adaptation
Original language description
In modern communication systems advanced techniques such as digital predistortion (DPD) are required to satisfy stringent demands on transmitter linearity and efficiency. DPD, however, increases the hardware and computational complexity of transmitters. In this article we show that the computational complexity of DPD adaptation can be drastically reduced if a low number of samples is properly selected for DPD adaptation. For this purpose we propose methods of sample selection for DPD adaptation. Among the proposed methods, the highest computational complexity reduction is achieved by a method based on the histogram of signal magnitudes, optimised with respect to characteristics of the radio frequency power amplifier and of the transmitted signal. Simulations indicate that this proposed method can reduce the computational complexity of DPD adaptation by a factor of up to 400 while the linearisation performance of conventional methods is preserved. Besides simulations for three models of distinct power amplifiers, measurements on a real power amplifier further verify the linearisation capabilities of the proposed methods.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20202 - Communication engineering and systems
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
ISSN
1549-8328
e-ISSN
1558-0806
Volume of the periodical
67
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
1976-1988
UT code for WoS article
000543062600017
EID of the result in the Scopus database
2-s2.0-85085999121