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2014•Microwave and Optical Technology LettersRequires access

Compensation of nonlinear distortion in RF power amplifiers for LTE applications

Mina Vaskovic, D. Budimir

Open publisher page 3 citations

Abstract

In this article, a real valued time delay neural networks (RVTDNN) based power amplifier predistorter is presented. A two hidden layers neural network, trained with measured data, is used as predistorter. Nonlinear distortion compensation is increased by implementing proposed approach. An achievement of the spectral regrowth improvement of 10 dB for a LTE 1.4 MHz 64 QAM signal at 880 MHz as center frequency is presented. The highly nonlinear MIMIX CFH2162-P3 power amplifier is used as a device under test (DUT). The effectiveness of the proposed approach is validated with experimental results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1910–1913, 2014

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What this paper is about

In this article, a real valued time delay neural networks (RVTDNN) based power amplifier predistorter is presented. A two hidden layers neural network, trained with measured data, is used as predistorter. Nonlinear distortion compensation is increased by implementing proposed approach. An achievement of the spectral regrowth improvement of 10 dB for a LTE 1.4 MHz 64 QAM signal at 880 MHz as center frequency is presented. The highly nonlinear MIMIX CFH2162-P3 power amplifier is used as a device under test (DUT). The effectiveness of the proposed approach is validated with experimental results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1910–1913, 2014

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Available abstract

In this article, a real valued time delay neural networks (RVTDNN) based power amplifier predistorter is presented. A two hidden layers neural network, trained with measured data, is used as predistorter. Nonlinear distortion compensation is increased by implementing proposed approach. An achievement of the spectral regrowth improvement of 10 dB for a LTE 1.4 MHz 64 QAM signal at 880 MHz as center frequency is presented. The highly nonlinear MIMIX CFH2162-P3 power amplifier is used as a device under test (DUT). The effectiveness of the proposed approach is validated with experimental results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1910–1913, 2014

Key concepts: Amplifier, Nonlinear distortion, Compensation (psychology), Distortion (music), Electronic engineering, Nonlinear system, Predistortion, Microwave

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