Block adaptive and neural network based digital predistortion and power amplifier performance

Robert Santucci, Andreas Spanias

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The purpose of this paper is to compare the methodology and performance of two different techniques for digital predistortion. The first technique is the block adaptive digital predistorter, which operates using a modified leastmean-squares (LMS) algorithm. The second technique uses a feed-forward time-delay neural network to achieve its linearization performance. The performance of each of these techniques is evaluated for an orthogonal frequency-division multiplexing (OFDM) system with 10dB peak-to-average power ratio (PAR). For easy visual inspection of the tradeoffs, enabling preliminary analysis and teaching, a Java-DSP application has been developed. For more detailed analysis, a clustered MATLAB simulation environment has also been developed. By adding higher-ordered terms as inputs to the neural network, the authors have attained additional linearization near maximum power output for specific power amplifier models.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011
Pages300-305
Number of pages6
DOIs
StatePublished - Jun 13 2011
Event8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011 - Innsbruck, Austria
Duration: Feb 16 2011Feb 18 2011

Publication series

NameProceedings of the 8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011

Other

Other8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011
CountryAustria
CityInnsbruck
Period2/16/112/18/11

Keywords

  • Block adaptive filters
  • Linearization
  • Neural networks
  • Predistortion
  • RF amplifier

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Vision and Pattern Recognition
  • Signal Processing

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  • Cite this

    Santucci, R., & Spanias, A. (2011). Block adaptive and neural network based digital predistortion and power amplifier performance. In Proceedings of the 8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011 (pp. 300-305). (Proceedings of the 8th IASTED International Conference on Signal Processing, Pattern Recognition, and Applications, SPPRA 2011). https://doi.org/10.2316/P.2011.721-035