Comparison of look-up table minimization methods for real-time power amplifier simulation

Yan Zhang, Aarne Mämmelä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

Look-up table (LUT) is one of the most popular methods for simulating the nonlinear characteristics of radio frequency (RF) power amplifiers. In this paper two practical methods for minimizing the LUT size are assessed for fast and flexible simulations using field programmable gate array (FPGA) circuits. They are cubicspline interpolation and segmented nonuniform table indexing methods. The implementation architectures for these two approaches were developed and implemented. In addition, a suitable evaluation criterion for this kind of new applications is proposed in this paper. Implementation complexity and goodness of curve reconstruction were both considered so that the evaluation process could be more accurate and complete. The numerical comparisons show that the reconstruction performance of the cubicspline interpolation method outperforms the nonuniform table indexing method dramatically by the sacrifice of a number of multipliers and double memory resources. The results also show that different segmentation schemes can considerably affect the performance of the segmented nonuniform indexing method.
Original languageEnglish
Title of host publicationIEEE Workshop on Signal Processing Systems Design and Implementation, 2005
Pages629-634
DOIs
Publication statusPublished - 23 Jan 2006
MoE publication typeA4 Article in a conference publication
EventIEEE Workshop on Signal Processing Systems Design and Implementation, SiPS - Athens, Greece
Duration: 2 Nov 20054 Nov 2005

Workshop

WorkshopIEEE Workshop on Signal Processing Systems Design and Implementation, SiPS
Abbreviated titleSiPS
CountryGreece
CityAthens
Period2/11/054/11/05

Fingerprint

Power amplifiers
Interpolation
Radio frequency amplifiers
Field programmable gate arrays (FPGA)
Data storage equipment
Networks (circuits)

Keywords

  • Table lookup
  • Minimization methods
  • Radiofrequency amplifiers
  • Radio frequency
  • Flexible printed circuits
  • Circuit simulation
  • Indexing

Cite this

Zhang, Y., & Mämmelä, A. (2006). Comparison of look-up table minimization methods for real-time power amplifier simulation. In IEEE Workshop on Signal Processing Systems Design and Implementation, 2005 (pp. 629-634) https://doi.org/10.1109/SIPS.2005.1579942
Zhang, Yan ; Mämmelä, Aarne. / Comparison of look-up table minimization methods for real-time power amplifier simulation. IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. 2006. pp. 629-634
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Zhang, Y & Mämmelä, A 2006, Comparison of look-up table minimization methods for real-time power amplifier simulation. in IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. pp. 629-634, IEEE Workshop on Signal Processing Systems Design and Implementation, SiPS, Athens, Greece, 2/11/05. https://doi.org/10.1109/SIPS.2005.1579942

Comparison of look-up table minimization methods for real-time power amplifier simulation. / Zhang, Yan; Mämmelä, Aarne.

IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. 2006. p. 629-634.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Zhang Y, Mämmelä A. Comparison of look-up table minimization methods for real-time power amplifier simulation. In IEEE Workshop on Signal Processing Systems Design and Implementation, 2005. 2006. p. 629-634 https://doi.org/10.1109/SIPS.2005.1579942