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Design of Efficient Adaptive Predistorter for Nonlinear High Power Amplifier

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Abstract

This paper presents a digital predistorter to linearize the High Power Amplifier (HPA) with memory effect. The proposed predistorter is based on the approach of Multi-Level 2D LUT based model that compensate the HPA distortion based on memory and non-linearity. The Multi-Level approach utilized in the proposed system eliminates the trade-off between accuracy and adaptation speed. The proposed model is validated by utilizing the Orthogonal Frequency Division Multiplexing of Digital Video Broadcasting-Terrestrial. The Matlab realization of the proposed system show 33X–35X faster convergence time than predistorter based on conventional 2D-LUT model with same adaptation step and memory size.

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Authors and Affiliations

  1. Department of ECE, Chettinad College of Engineering & Technology, Puliyur-CF, Karur, India

    J. N. Swaminathan

  2. Department of ECE, K. S. Rangasamy College of Technology, Thiruchengode, India

    P. Kumar

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  1. J. N. Swaminathan
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  2. P. Kumar
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Correspondence to J. N. Swaminathan.

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Swaminathan, J.N., Kumar, P. Design of Efficient Adaptive Predistorter for Nonlinear High Power Amplifier. Wireless Pers Commun 82, 1085–1093 (2015). https://doi.org/10.1007/s11277-014-2267-0

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  • DOI: https://doi.org/10.1007/s11277-014-2267-0

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