Journal ArticleDOI
A Compact Envelope-Memory Polynomial for RF Transmitters Modeling With Application to Baseband and RF-Digital Predistortion
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TLDR
A compact envelope-memory polynomial based model suitable for forward and reverse modeling of weakly nonlinear wireless transmitters and power amplifiers exhibiting electrical memory effects is presented.Abstract:
In this letter, a compact envelope-memory polynomial based model, suitable for forward and reverse modeling of weakly nonlinear wireless transmitters and power amplifiers (PAs) exhibiting electrical memory effects, is presented. This model is implemented in a complex gain based architecture and takes advantage of the dependency of PA nonlinearity on the magnitude of the input signal. Contrary to conventional memory polynomials, the proposed model can be implemented in baseband, as well as in radio frequency, digital predistorters. A 100-W average power transmitter is used for experimental validation of the forward and reverse models. Both forward and reverse modeling results obtained with the proposed model are comparable to that of the conventional memory polynomial.read more
Citations
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Journal ArticleDOI
Behavioral modeling and predistortion
TL;DR: A software digital predistortion solution that enables closed-loop wideband linearization was briefly presented with excellent linearization capabilities when amplifying a 12-carrier 60-MHZ wide WCDMA signal.
Journal ArticleDOI
Beam-Oriented Digital Predistortion for 5G Massive MIMO Hybrid Beamforming Transmitters
TL;DR: A beam-oriented digital predistortion (BO-DPD) technique for power amplifiers (PAs) in hybrid beamforming massive multiple-input multiple-output (MIMO) transmitters, which can achieve linearization of the transmitted signal in the main beam direction and address the DPD implementation issue in the hybridbeamforming array.
Journal ArticleDOI
Decomposed Vector Rotation-Based Behavioral Modeling for Digital Predistortion of RF Power Amplifiers
TL;DR: In this article, a new behavioral model for digital predistortion of radio frequency (RF) power amplifiers (PAs) is proposed, which is derived from a modified form of the canonical piecewise-linear (CPWL) functions using a decomposed vector rotation (DVR) technique.
Journal ArticleDOI
An Accurate Complexity-Reduced “PLUME” Model for Behavioral Modeling and Digital Predistortion of RF Power Amplifiers
TL;DR: This paper introduces a new, accurate, and complexity-reduced three-nonlinear-box model that is suitable for the behavioral modeling and digital predistortion (DPD) of power amplifiers (PAs) exhibiting memory effects and demonstrates that the proposed PLUME model outperforms the first two models.
Journal ArticleDOI
A New Approach to Pruning Volterra Models for Power Amplifiers
TL;DR: An approach to behavioral modeling that can be applied to predict the nonlinear response of power amplifiers with memory is presented and comparison of the measured and simulated responses confirms the effectiveness of the proposed approach.
References
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Journal ArticleDOI
A Generalized Memory Polynomial Model for Digital Predistortion of RF Power Amplifiers
TL;DR: This paper relates the general Volterra representation to the classical Wiener, Hammerstein, Wiener-Hammerstein, and parallel Wiener structures, and describes some state-of-the-art predistortion models based on memory polynomials, and proposes a new generalizedMemory polynomial that achieves the best performance to date.
Journal ArticleDOI
A robust digital baseband predistorter constructed using memory polynomials
Lei Ding,Guotong Zhou,Dennis R. Morgan,Zhengxiang Ma,J.S. Kenney,Jaehyeong Kim,C.R. Giardina +6 more
TL;DR: A memory polynomial model for the predistorter is proposed and implemented using an indirect learning architecture and linearization performance is demonstrated on a three-carrier WCDMA signal.
Journal ArticleDOI
Digital predistortion of wideband signals based on power amplifier model with memory
Jungsang Kim,K. Konstantinou +1 more
TL;DR: In this paper, memory effects in the power amplifier limit the performance of digital predistortion for wideband signals, and novel algorithms that take into account such effects are proposed to solve the problem.
Journal ArticleDOI
A comparative overview of microwave and wireless power-amplifier behavioral modeling approaches
Jose C. Pedro,S. A. Maas +1 more
TL;DR: A classification of the various PA behavioral models is proposed, discussing their abilities to represent the different effects observed in practical circuits and how it was possible to integrate a wide range of behavioral modeling activities.
Journal ArticleDOI
Measurement technique for characterizing memory effects in RF power amplifiers
TL;DR: In this paper, a three-tone test setup is constructed to measure the phase of third-order intermodulation distortion products, and the measured results for a bipolar junction transistor and a MESFET amplifier are presented.
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