Digital Predistortion Using Lookup Tables With Linear Interpolation and Extrapolation: Direct Least Squares Coefficient Adaptation

In this paper, we present a method to implement digital predistortion (DPD) memory models using lookup tables (LUTs) with linear interpolation and extrapolation. We introduce the required set of basis functions to describe this model. The DPD output is expressed as a linear combination of these basi...

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Bibliographic Details
Published in:	IEEE transactions on microwave theory and techniques Vol. 65; no. 3; pp. 980 - 987
Main Authors:	Molina, Albert, Rajamani, Kannan, Azadet, Kamran
Format:	Journal Article
Language:	English
Published:	New York IEEE 01.03.2017 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Adaptation Adaptation models automatic gain control Basis functions cellular base station Computational modeling digital predistortion (DPD) adaptation Extrapolation Gain control Interpolation Least squares lookup table (LUT) Lookup tables Mathematical models nonlinear distortion Polynomials power amplifiers (PAs) Predistortion Table lookup
ISSN:	0018-9480, 1557-9670
Online Access:	Get full text
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