From post-distortion to pre-distortion for power amplifiers linearization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F03%3APU37615" target="_blank" >RIV/00216305:26220/03:PU37615 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

From post-distortion to pre-distortion for power amplifiers linearization

Original language description

This letter presents a new method of digital adaptive pre-distortion for linearization of power amplifiers (PAs). The method is derived from a post-distortion approach which identifies the PA inverse function. This approach leads to the minimization of aquadratic function of the polynomial coefficients in the case of a polynomial predistorter form and a least square criterion. We have compared our solution to a method previously proposed by Ghaderi that was also based on the transformation of a post-diistortion into a pre-distortion system. We have tested our predistorter (along with a baseband adaptation of Ghaderi's one) on OFDM hiperlan signals. Both methods significantly reduced the signal distortion and the spectral regrowth. Our less complex approach proved to be even better for small Peak Back Off values.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

IEEE Communication Letters

ISSN

1089-7798

e-ISSN

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Volume of the periodical

2003

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

308-310

UT code for WoS article

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EID of the result in the Scopus database

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