5th International ICST Conference on Communications and Networking in China

Research Article

Digital predistortion using stochastic conjugate gradient method

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  • @INPROCEEDINGS{10.4108/chinacom.2010.71,
    author={Hong Jiang and Paul Wilford and Xin Yu},
    title={Digital predistortion using stochastic conjugate gradient method},
    proceedings={5th International ICST Conference on Communications and Networking in China},
    publisher={IEEE},
    proceedings_a={CHINACOM},
    year={2011},
    month={1},
    keywords={digital predistortion power amplifier linearization predistorter postdistorter stochastic conjugate gradient method},
    doi={10.4108/chinacom.2010.71}
}
  • Hong Jiang
    Paul Wilford
    Xin Yu
    Year: 2011
    Digital predistortion using stochastic conjugate gradient method
    CHINACOM
    ICST
    DOI: 10.4108/chinacom.2010.71
Hong Jiang1,*, Paul Wilford1,*, Xin Yu2,*
  • 1: Bell Labs, Alcatel-Lucent, 700 Mountain Ave, Murray Hill, NJ 07974, USA
  • 2: Alcatel-Lucent AG, Bell Labs Germany, Radio Communication - ZFZ/WA4, Lorenzstraße 10, 70435 Stuttgart, Germany
*Contact email: hong.jiang@alcatel-lucent.com, paw@alcatel-lucent.com, xin.xy.yu@alcatel-lucent.com

Abstract

This paper is concerned with digital predistortion for linearization of RF high power amplifiers (HPAs). An iterative stochastic conjugate gradient (SCG) method is used in computing the predistorter in the digital predistortion. The SCG has the advantage of reducing the complexity and, at the same time, increasing the convergence rate and stability of iteration. We present some results of using the SCG in a hardware platform with a solid state HPA.

Keywords
digital predistortion power amplifier linearization predistorter postdistorter stochastic conjugate gradient method
Published
2011-01-10
Publisher
IEEE
http://dx.doi.org/10.4108/chinacom.2010.71
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