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MARŠÁLEK, R. JARDIN, P. BAUDOIN, G.
Originální název
From post-distortion to pre-distortion for power amplifiers linearization
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
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.
Klíčová slova
Power amplifier, predistortion
Autoři
MARŠÁLEK, R.; JARDIN, P.; BAUDOIN, G.
Rok RIV
2003
Vydáno
1. 7. 2003
Místo
Neuveden
ISSN
1089-7798
Periodikum
IEEE Communication Letters
Ročník
Číslo
7
Stát
Spojené státy americké
Strany od
308
Strany do
310
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 Communication Letters", year="2003", volume="2003", number="7", pages="3", issn="1089-7798" }