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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2003

Kód důvěrnosti údajů

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

Název periodika

IEEE Communication Letters

ISSN

1089-7798

e-ISSN

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Svazek periodika

2003

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

3

Strana od-do

308-310

Kód UT WoS článku

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EID výsledku v databázi Scopus

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