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A Low-rate identification method for digital predistorters based on Volterra kernel interpolation

Singerl, P. ; Koeppl, H. (2007)
A Low-rate identification method for digital predistorters based on Volterra kernel interpolation.
In: Analog Integrated Circuits and Signal Processing, 56 (1-2)
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

RF power amplifiers (PA) of wireless communication systems are usually driven in their nonlinear region to obtain a higher efficiency. The price paid for the increased efficiency is the distortion of the transmission signal. To fulfil a given spectral mask for the transmission signal and to avoid an unacceptable high bit-error rate on the receiver side, the amplifier must be linearized. It is well known that nonlinear system identification (PA or predistorter) can be accomplished on the Nyquist-rate regarding the input signal bandwidth. However for predistortion applications, systems operating on the output signal Nyquist-rate are required. In this paper we show how such predistortion systems can be obtained by a multi-dimensional Volterra kernel interpolation where the kernels are estimated on a Nyquist-rate regarding the input signal, without the demand for an expensive high sampling rate analog to digital converter (ADC).

Typ des Eintrags: Artikel
Erschienen: 2007
Autor(en): Singerl, P. ; Koeppl, H.
Art des Eintrags: Bibliographie
Titel: A Low-rate identification method for digital predistorters based on Volterra kernel interpolation
Sprache: Deutsch
Publikationsjahr: Oktober 2007
Ort: Cincinnati, OH, USA
Verlag: Springer
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Analog Integrated Circuits and Signal Processing
Jahrgang/Volume einer Zeitschrift: 56
(Heft-)Nummer: 1-2
URL / URN: http://link.springer.com/article/10.1007/s10470-007-9074-4/f...
Kurzbeschreibung (Abstract):

RF power amplifiers (PA) of wireless communication systems are usually driven in their nonlinear region to obtain a higher efficiency. The price paid for the increased efficiency is the distortion of the transmission signal. To fulfil a given spectral mask for the transmission signal and to avoid an unacceptable high bit-error rate on the receiver side, the amplifier must be linearized. It is well known that nonlinear system identification (PA or predistorter) can be accomplished on the Nyquist-rate regarding the input signal bandwidth. However for predistortion applications, systems operating on the output signal Nyquist-rate are required. In this paper we show how such predistortion systems can be obtained by a multi-dimensional Volterra kernel interpolation where the kernels are estimated on a Nyquist-rate regarding the input signal, without the demand for an expensive high sampling rate analog to digital converter (ADC).

Fachbereich(e)/-gebiet(e): 18 Fachbereich Elektrotechnik und Informationstechnik
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik > Bioinspirierte Kommunikationssysteme
18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Nachrichtentechnik
Hinterlegungsdatum: 04 Apr 2014 11:41
Letzte Änderung: 23 Sep 2021 14:32
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