Detail publikačního výsledku

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

MARŠÁLEK, R.; JARDIN, P.; BAUDOIN, G.

Originální název

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

Anglický název

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

Druh

Článek recenzovaný mimo WoS a Scopus

Originální abstrakt

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 a quadratic 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-distortion 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.

Anglický abstrakt

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 a quadratic 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-distortion 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.

Klíčová slova

Power amplifier, predistortion

Klíčová slova v angličtině

Power amplifier, predistortion

Autoři

MARŠÁLEK, R.; JARDIN, P.; BAUDOIN, G.

Vydáno

01.07.2003

Místo

Neuveden

ISSN

1089-7798

Periodikum

IEEE COMMUNICATIONS LETTERS

Svazek

2003

Číslo

7

Stát

Spojené státy americké

Strany od

308

Strany počet

3

BibTex

@article{BUT41428,
  author="Roman {Maršálek} and Pascale {Jardin} and Genevieve {Baudoin}",
  title="From post-distortion to pre-distortion for power amplifiers linearization",
  journal="IEEE COMMUNICATIONS LETTERS",
  year="2003",
  volume="2003",
  number="7",
  pages="3",
  issn="1089-7798"
}