Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters

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Abstract

Amplification of signals with fluctuating envelopes leads to distortion because of non-linear behavior of the Power Amplifier (PA). Digital Predistortion can counteract these non-linear effects. A crosscorrelation predistorter is a digital predistorter, based on the calculation of crosscorrelation functions using coarsely quantized signals. The crosscorrelation functions are transformed to the frequency domain and the spectra are used to calculate the coefficients of the predistorter memory polynomial. This method has reduced complexity and equivalent performance in comparison with existing schemes. In this paper, four alternative schemes to implement a crosscorrelation predistorter are analyzed. The PA characteristics can be determined either directly or indirectly using ’normal’ or orthogonal polynomials giving four alternatives. All four alternatives give significant reduction of Adjacent Channel Interference.
Original languageEnglish
Pages266-270
Publication statusPublished - 2004
Event15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004 - Veldhoven, Netherlands
Duration: 25 Nov 200426 Nov 2004
Conference number: 15

Conference

Conference15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004
Abbreviated titleProRisc
CountryNetherlands
CityVeldhoven
Period25/11/0426/11/04

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Power amplifiers
Polynomials
Amplification
Data storage equipment

Keywords

  • IR-59519

Cite this

Kokkeler, A. B. J. (2004). Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters. 266-270. Paper presented at 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands.
Kokkeler, Andre B.J. / Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters. Paper presented at 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands.
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Kokkeler, ABJ 2004, 'Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters' Paper presented at 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands, 25/11/04 - 26/11/04, pp. 266-270.

Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters. / Kokkeler, Andre B.J.

2004. 266-270 Paper presented at 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands.

Research output: Contribution to conferencePaperAcademic

TY - CONF

T1 - Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters

AU - Kokkeler, Andre B.J.

PY - 2004

Y1 - 2004

N2 - Amplification of signals with fluctuating envelopes leads to distortion because of non-linear behavior of the Power Amplifier (PA). Digital Predistortion can counteract these non-linear effects. A crosscorrelation predistorter is a digital predistorter, based on the calculation of crosscorrelation functions using coarsely quantized signals. The crosscorrelation functions are transformed to the frequency domain and the spectra are used to calculate the coefficients of the predistorter memory polynomial. This method has reduced complexity and equivalent performance in comparison with existing schemes. In this paper, four alternative schemes to implement a crosscorrelation predistorter are analyzed. The PA characteristics can be determined either directly or indirectly using ’normal’ or orthogonal polynomials giving four alternatives. All four alternatives give significant reduction of Adjacent Channel Interference.

AB - Amplification of signals with fluctuating envelopes leads to distortion because of non-linear behavior of the Power Amplifier (PA). Digital Predistortion can counteract these non-linear effects. A crosscorrelation predistorter is a digital predistorter, based on the calculation of crosscorrelation functions using coarsely quantized signals. The crosscorrelation functions are transformed to the frequency domain and the spectra are used to calculate the coefficients of the predistorter memory polynomial. This method has reduced complexity and equivalent performance in comparison with existing schemes. In this paper, four alternative schemes to implement a crosscorrelation predistorter are analyzed. The PA characteristics can be determined either directly or indirectly using ’normal’ or orthogonal polynomials giving four alternatives. All four alternatives give significant reduction of Adjacent Channel Interference.

KW - IR-59519

M3 - Paper

SP - 266

EP - 270

ER -

Kokkeler ABJ. Analysis of Power Amplifier Modeling Schemes for Crosscorrelation Predistorters. 2004. Paper presented at 15th Annual Workshop on Circuits, Systems and Signal Processing, ProRisc 2004, Veldhoven, Netherlands.