[1] Yu Cuiping, Liu Yuanan, Li Shulan, Nan Jingchang, et al. Step memory polynomial predistorterfor power amplifiers with memory [J]. Journal of Southeast University (English Edition), 2009, 25 (3): 303-308. [doi:10.3969/j.issn.1003-7985.2009.03.004]

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Step memory polynomial predistorterfor power amplifiers with memory()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 3

Page:

303-308

Research Field:

Electronic Science and Engineering

Publishing date:

2009-09-30

Info

Title:

Step memory polynomial predistorterfor power amplifiers with memory

Author(s):

Yu Cuiping¹;  Liu Yuanan¹;  Li Shulan¹;  Nan Jingchang²

¹School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
²College of Electronics and Information Engineering, Liaoning Technical University, Huludao 125105, China

Keywords:

power amplifier;  predistortion;  memory effects;  memory polynomial

PACS:

TN72

DOI:

10.3969/j.issn.1003-7985.2009.03.004

Abstract:

To reduce the number of digital predistortion coefficients, a step memory polynomial(SMP)predistorter is presented.The number of predistortion coefficients is decreased by adjusting the maximum nonlinear order for different memory orders in the traditional memory polynomial(MP)predistorter.The proposed SMP predistorter is identified by an offline learning structure on which the coefficients can be extracted directly from the sampled input and output of a PA.Simulation results show that the SMP predistorter is not tied to a particular PA model and is, therefore, robust.The effectiveness of the SMP predistorter is demonstrated by simulations and experiments on an MP model, a parallel Wiener model, a Wiener-Hammerstein model, a sparse-delay memory polynomial model and a real PA which is fabricated based on the Freescale LDMOSFET MRF21030.Compared with the traditional MP predistorter, the SMP predistorter can reduce the number of coefficients by 60%.

References:

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Memo

Memo:

Biographies: Yu Cuiping(1983—), female, doctor;Liu Yuanan(corresponding author), male, professor, yuliu@bupt.edu.cn.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No.2008AA01Z211), the Project of Industry-Academia-Research Demonstration Base of Education Ministry of Guangdong Province(No.2007B090200012).
Citation: Yu Cuiping, Liu Yuanan, Li Shulan, et al.Step memory polynomial predistorter for power amplifiers with memory[J].Journal of Southeast University(English Edition), 2009, 25(3): 303-308.

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