Nonlinear System Identification And Analysis With Applications To Power Amplifier Modeling And Power Amplifier Predistortion

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Nonlinear System Identification and Analysis with Applications to Power Amplifier Modeling and Power Amplifier Predistortion

Author : Raviv Raich
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (557 download)

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Book Synopsis Nonlinear System Identification and Analysis with Applications to Power Amplifier Modeling and Power Amplifier Predistortion by : Raviv Raich

Download or read book Nonlinear System Identification and Analysis with Applications to Power Amplifier Modeling and Power Amplifier Predistortion written by Raviv Raich and published by . This book was released on 2004 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power amplifiers (PAs) are important components of communication systems and are inherently nonlinear. When a non-constant modulus signal goes through a nonlinear PA, spectral regrowth (broadening) appears in the PA output, which in turn causes adjacent channel interference (ACI). Stringent limits on the ACI are imposed by regulatory bodies, and thus the extent of the PA nonlinearity must be controlled. PA linearization is often necessary to suppress spectral regrowth, contain adjacent channel interference, and reduce bit error rate (BER). This dissertation addresses the following aspects of power amplifier research: modeling, linearization, and spectral regrowth analysis. We explore the passband and baseband PA input/output relationships and show that they manifest differently when the PA exhibits long-term, short-term, or no memory effects. The so-called quasi-memoryless case is especially clarified. Four particular nonlinear models with memory are further investigated. We provide experimental results to support our analysis. The benefits of using the orthogonal polynomials as opposed to the conventional polynomials are explored, in the context of digital baseband PA modeling and predistorter design. A closed-form expression for the orthogonal polynomial basis is derived. We demonstrate the improvement in numerical stability associated with the use of orthogonal polynomials for predistortion. Spectral analysis can help to evaluate the suitability of a given PA for amplifying certain signals or to assist in predistortion linearization algorithm design. With the orthogonal polynomials that we derived, spectral analysis of the nonlinear PA becomes a straightforward task. We carry out nonlinear spectral analysis with digitally modulated signal as input. We demonstrate an analytical approach for evaluating the power spectra of filtered QPSK and OQPSK signals after nonlinear amplification. Many communications devices are nonlinear and have a peak power or peak amplitude constraint. In addition to possibly amplifying the useful signal, the nonlinearity also generates distortions. We focus on signal-to-noise-and-distortion ratio (SNDR) optimization within the family of amplitude limited memoryless nonlinearities. We obtain a link between the capacity of amplitude-limited nonlinear channels with Gaussian noise to the SNDR.

Nonlinear Modeling Analysis and Predistortion Algorithm Research of Radio Frequency Power Amplifiers

Author : Jingchang Nan
Publisher : CRC Press
ISBN 13 : 1000409597
Total Pages : 217 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Nonlinear Modeling Analysis and Predistortion Algorithm Research of Radio Frequency Power Amplifiers by : Jingchang Nan

Download or read book Nonlinear Modeling Analysis and Predistortion Algorithm Research of Radio Frequency Power Amplifiers written by Jingchang Nan and published by CRC Press. This book was released on 2021-07-30 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a summary of a series of achievements made by the authors and colleagues in the areas of radio frequency power amplifier modeling (including neural Volterra series modeling, neural network modeling, X-parameter modeling), nonlinear analysis methods, and power amplifier predistortion technology over the past 10 years. The book is organized into ten chapters, which respectively describe an overview of research of power amplifier behavioral models and predistortion technology, nonlinear characteristics of power amplifiers, power amplifier behavioral models and the basis of nonlinear analysis, an overview of power amplifier predistortion, Volterra series modeling of power amplifiers, power amplifier modeling based on neural networks, power amplifier modeling with X-parameters, the modeling of other power amplifiers, nonlinear circuit analysis methods, and predistortion algorithms and applications. Blending theory with analysis, this book will provide researchers and RF/microwave engineering students with a valuable resource.

Inverse system identification with applications in predistortion

Author : Ylva Jung
Publisher : Linköping University Electronic Press
ISBN 13 : 9176851710
Total Pages : 224 pages
Book Rating : 4.1/5 (768 download)

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Book Synopsis Inverse system identification with applications in predistortion by : Ylva Jung

Download or read book Inverse system identification with applications in predistortion written by Ylva Jung and published by Linköping University Electronic Press. This book was released on 2018-12-19 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Models are commonly used to simulate events and processes, and can be constructed from measured data using system identification. The common way is to model the system from input to output, but in this thesis we want to obtain the inverse of the system. Power amplifiers (PAs) used in communication devices can be nonlinear, and this causes interference in adjacent transmitting channels. A prefilter, called predistorter, can be used to invert the effects of the PA, such that the combination of predistorter and PA reconstructs an amplified version of the input signal. In this thesis, the predistortion problem has been investigated for outphasing power amplifiers, where the input signal is decomposed into two branches that are amplified separately by highly efficient nonlinear amplifiers and then recombined. We have formulated a model structure describing the imperfections in an outphasing abbrPA and the matching ideal predistorter. The predistorter can be estimated from measured data in different ways. Here, the initially nonconvex optimization problem has been developed into a convex problem. The predistorters have been evaluated in measurements. The goal with the inverse models in this thesis is to use them in cascade with the systems to reconstruct the original input. It is shown that the problems of identifying a model of a preinverse and a postinverse are fundamentally different. It turns out that the true inverse is not necessarily the best one when noise is present, and that other models and structures can lead to better inversion results. To construct a predistorter (for a PA, for example), a model of the inverse is used, and different methods can be used for the estimation. One common method is to estimate a postinverse, and then using it as a preinverse, making it straightforward to try out different model structures. Another is to construct a model of the system and then use it to estimate a preinverse in a second step. This method identifies the inverse in the setup it will be used, but leads to a complicated optimization problem. A third option is to model the forward system and then invert it. This method can be understood using standard identification theory in contrast to the ones above, but the model is tuned for the forward system, not the inverse. Models obtained using the various methods capture different properties of the system, and a more detailed analysis of the methods is presented for linear time-invariant systems and linear approximations of block-oriented systems. The theory is also illustrated in examples. When a preinverse is used, the input to the system will be changed, and typically the input data will be different than the original input. This is why the estimation of preinverses is more complicated than for postinverses, and one set of experimental data is not enough. Here, we have shown that identifying a preinverse in series with the system in repeated experiments can improve the inversion performance.

Digital Predistortion of Power Amplifiers for Wireless Applications

Author : Lei Ding
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (556 download)

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Book Synopsis Digital Predistortion of Power Amplifiers for Wireless Applications by : Lei Ding

Download or read book Digital Predistortion of Power Amplifiers for Wireless Applications written by Lei Ding and published by . This book was released on 2004 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital predistortion is one of the most cost effective ways among all linearization techniques. However, most of the existing designs treat the power amplifier as a memoryless device. For wideband or high power applications, the power amplifier exhibits memory effects, for which memoryless predistorters can achieve only limited linearization performance. In this dissertation, we propose novel predistorters and their parameter extraction algorithms. We investigate a Hammerstein predistorter, a memory polynomial predistorter, and a new combined model based predistorter. The Hammerstein predistorter is designed specifically for power amplifiers that can be modeled as a Wiener system. The memory polynomial predistorter can correct both the nonlinear distortions and the linear frequency response that may exist in the power amplifier. Real-time implementation aspects of the memory polynomial predistorter are also investigated. The new combined model includes the memory polynomial model and the Murray Hill model, thus extending the predistorter's ability to compensate for strong memory effects in the power amplifier. The predistorter models considered in this dissertation include both even- and odd-order nonlinear terms. By including these even-order nonlinear terms, we have a richer basis set, which offers appreciable improvement. In reality, however, the performance of a predistortion system can also be affected by the analog imperfections in the transmitter, which are introduced by the analog components; mostly analog filters and quadrature modulators. There are two common configurations for the upconversion chain in the transmitter: two-stage upconversion and direct upconversion. For a two-stage upconversion transmitter, we design a band-limited equalizer to compensate for the frequency response of the surface acoustic wave (SAW) filter which is usually employed in the IF stage. For a direct upconversion transmitter, we develop a model to describe the frequency-dependent gain/phase imbalance and dc offset. We then develop two methods to construct compensators for the imbalance and dc offset. These compensation techniques help to correct for the analog imperfections, which in turn improve the overall predistortion performance.

Electronic Engineering and Information Science

Author : Jing Hua Yin
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038265292
Total Pages : 1006 pages
Book Rating : 4.0/5 (382 download)

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Book Synopsis Electronic Engineering and Information Science by : Jing Hua Yin

Download or read book Electronic Engineering and Information Science written by Jing Hua Yin and published by Trans Tech Publications Ltd. This book was released on 2014-07-08 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected, peer reviewed papers from the 2014 International Conference of Electronic Engineering and Information Science (ICEEIS 2014), June 21-22, 2014, Harbin, China. The 209 papers are grouped as follows: Chapter 1: Electronic Engineering, Chapter 2: Information Science and Information Technologies, Chapter 3: Computational Mathematics and Data Mining, Chapter 4: Image Processing and Computer Vision, Chapter 5: Communication and Signal Processing, Chapter 6: Mechatronics, Control and Automation, Chapter 7: Methods, Devices and Systems for Measurement and Monitoring, Chapter 8: Power Engineering and Power Supply, Chapter 9: Engineering of Weapons Systems, Chapter 10: Mechanical Engineering, Chapter 11: Material Science and Technologies of Processing, Chapter 12: Engineering Management and Logistics

Wireless, Networking, Radar, Sensor Array Processing, and Nonlinear Signal Processing

Author : Vijay Madisetti
Publisher : CRC Press
ISBN 13 : 1420046055
Total Pages : 874 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Wireless, Networking, Radar, Sensor Array Processing, and Nonlinear Signal Processing by : Vijay Madisetti

Download or read book Wireless, Networking, Radar, Sensor Array Processing, and Nonlinear Signal Processing written by Vijay Madisetti and published by CRC Press. This book was released on 2018-09-03 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available in a three-volume set, this updated and expanded edition of the bestselling The Digital Signal Processing Handbook continues to provide the engineering community with authoritative coverage of the fundamental and specialized aspects of information-bearing signals in digital form. Encompassing essential background material, technical details, standards, and software, the second edition reflects cutting-edge information on signal processing algorithms and protocols related to speech, audio, multimedia, and video processing technology associated with standards ranging from WiMax to MP3 audio, low-power/high-performance DSPs, color image processing, and chips on video. Drawing on the experience of leading engineers, researchers, and scholars, the three-volume set contains 29 new chapters that address multimedia and Internet technologies, tomography, radar systems, architecture, standards, and future applications in speech, acoustics, video, radar, and telecommunications. This volume, Wireless, Networking, Radar, Sensor Array Processing, and Nonlinear Signal Processing, provides complete coverage of the foundations of signal processing related to wireless, radar, space–time coding, and mobile communications, together with associated applications to networking, storage, and communications.

Nonlinear System Identification — Input-Output Modeling Approach

Author : Robert Haber
Publisher : Springer
ISBN 13 : 9789401059206
Total Pages : 802 pages
Book Rating : 4.0/5 (592 download)

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Book Synopsis Nonlinear System Identification — Input-Output Modeling Approach by : Robert Haber

Download or read book Nonlinear System Identification — Input-Output Modeling Approach written by Robert Haber and published by Springer. This book was released on 2012-12-22 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of the book is to present the modeling, parameter estimation and other aspects of the identification of nonlinear dynamic systems. The treatment is restricted to the input-output modeling approach. Because of the widespread usage of digital computers discrete time methods are preferred. Time domain parameter estimation methods are dealt with in detail, frequency domain and power spectrum procedures are described shortly. The theory is presented from the engineering point of view, and a large number of examples of case studies on the modeling and identifications of real processes illustrate the methods. Almost all processes are nonlinear if they are considered not merely in a small vicinity of the working point. To exploit industrial equipment as much as possible, mathematical models are needed which describe the global nonlinear behavior of the process. If the process is unknown, or if the describing equations are too complex, the structure and the parameters can be determined experimentally, which is the task of identification. The book is divided into seven chapters dealing with the following topics: 1. Nonlinear dynamic process models 2. Test signals for identification 3. Parameter estimation methods 4. Nonlinearity test methods 5. Structure identification 6. Model validity tests 7. Case studies on identification of real processes Chapter I summarizes the different model descriptions of nonlinear dynamical systems.

Proceedings of the ... SICE Annual Conference

Author : Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai
Publisher :
ISBN 13 :
Total Pages : 742 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Proceedings of the ... SICE Annual Conference by : Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai

Download or read book Proceedings of the ... SICE Annual Conference written by Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai and published by . This book was released on 2002 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Study on Complexity Reduction of Digital Predistortion for Power Amplifier Linearization

Author : Siqi Wang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (15 download)

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Book Synopsis Study on Complexity Reduction of Digital Predistortion for Power Amplifier Linearization by : Siqi Wang

Download or read book Study on Complexity Reduction of Digital Predistortion for Power Amplifier Linearization written by Siqi Wang and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation contributes to the linearization techniques of high power amplifier using digital predistortion method. High power amplifier is one of the most nonlinear components in radio transmitters. Unfortunately, for most current types of power amplifiers, a good efficiency is obtained at the price of a poor linearity especially with modern communication waveforms. Baseband adaptive digital predistortion is a powerful technique to linearize the power amplifiers and allows to push the power amplifier operation point towards its high efficiency region. Linearization of power amplifiers using digital predistortion with low complexities is the focus of this dissertation. An algorithm is proposed to determine an optimal model structure of single-stage or multi-stage predistorter according to a trade-off between modeling accuracy and model complexity. Multi-stage cascaded digital predistortions are studied with different identification methods, which have advantages on complexity of model identification compared with single-stage structure. The linearization performances are validated by experimental implementations on test bench. In terms of experimental implementations, this dissertation studies the impact of different gain choices on linearized power amplifier. All studies are evaluated with a Doherty power amplifier.

Nonlinear Distortion in Wireless Systems

Author : Khaled M. Gharaibeh
Publisher : John Wiley & Sons
ISBN 13 : 1119964113
Total Pages : 387 pages
Book Rating : 4.1/5 (199 download)

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Book Synopsis Nonlinear Distortion in Wireless Systems by : Khaled M. Gharaibeh

Download or read book Nonlinear Distortion in Wireless Systems written by Khaled M. Gharaibeh and published by John Wiley & Sons. This book was released on 2011-12-07 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the principles of modeling and simulation of nonlinear distortion in wireless communication systems with MATLAB simulations and techniques In this book, the author describes the principles of modeling and simulation of nonlinear distortion in single and multichannel wireless communication systems using both deterministic and stochastic signals. Models and simulation methods of nonlinear amplifiers explain in detail how to analyze and evaluate the performance of data communication links under nonlinear amplification. The book addresses the analysis of nonlinear systems with stochastic inputs and establishes the performance metrics of communication systems with regard to nonlinearity. In addition, the author also discusses the problem of how to embed models of distortion in system-level simulators such as MATLAB and MATLAB Simulink and provides practical techniques that professionals can use on their own projects. Finally, the book explores simulation and programming issues and provides a comprehensive reference of simulation tools for nonlinearity in wireless communication systems. Key Features: Covers the theory, models and simulation tools needed for understanding nonlinearity and nonlinear distortion in wireless systems Presents simulation and modeling techniques for nonlinear distortion in wireless channels using MATLAB Uses random process theory to develop simulation tools for predicting nonlinear system performance with real-world wireless communication signals Focuses on simulation examples of real-world communication systems under nonlinearity Includes an accompanying website containing MATLAB code This book will be an invaluable reference for researchers, RF engineers, and communication system engineers working in the field. Graduate students and professors undertaking related courses will also find the book of interest.

SICE 2002

Author : Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai
Publisher :
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis SICE 2002 by : Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai

Download or read book SICE 2002 written by Keisoku Jidō Seigyo Gakkai (Japan). Gakujutsu Kōenkai and published by . This book was released on 2002 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Behavioral Modeling and Predistortion of Wideband Wireless Transmitters

Author : Fadhel M. Ghannouchi
Publisher : John Wiley & Sons
ISBN 13 : 1119004446
Total Pages : 270 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Behavioral Modeling and Predistortion of Wideband Wireless Transmitters by : Fadhel M. Ghannouchi

Download or read book Behavioral Modeling and Predistortion of Wideband Wireless Transmitters written by Fadhel M. Ghannouchi and published by John Wiley & Sons. This book was released on 2015-05-12 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers theoretical and practical aspects related to the behavioral modelling and predistortion of wireless transmitters and power amplifiers. It includes simulation software that enables the users to apply the theory presented in the book. In the first section, the reader is given the general background of nonlinear dynamic systems along with their behavioral modelling from all its aspects. In the second part, a comprehensive compilation of behavioral models formulations and structures is provided including memory polynomial based models, box oriented models such as Hammerstein-based and Wiener-based models, and neural networks-based models. The book will be a valuable resource for design engineers, industrial engineers, applications engineers, postgraduate students, and researchers working on power amplifiers modelling, linearization, and design.

Digitally-Assisted Analog and Analog-Assisted Digital IC Design

Author : Xicheng Jiang
Publisher : Cambridge University Press
ISBN 13 : 1316368742
Total Pages : 417 pages
Book Rating : 4.3/5 (163 download)

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Book Synopsis Digitally-Assisted Analog and Analog-Assisted Digital IC Design by : Xicheng Jiang

Download or read book Digitally-Assisted Analog and Analog-Assisted Digital IC Design written by Xicheng Jiang and published by Cambridge University Press. This book was released on 2015-07-23 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Achieve enhanced performance with this guide to cutting-edge techniques for digitally-assisted analog and analog-assisted digital integrated circuit design. • Discover how architecture and circuit innovations can deliver improved performance in terms of speed, density, power, and cost • Learn about practical design considerations for high-performance scaled CMOS processes, FinFet devices and architectures, and the implications of FD SOI technology • Get up to speed with established circuit techniques that take advantage of scaled CMOS process technology in analog, digital, RF and SoC designs, including digitally-assisted techniques for data converters, DSP enabled frequency synthesizers, and digital controllers for switching power converters. With detailed descriptions, explanations, and practical advice from leading industry experts, this is an ideal resource for practicing engineers, researchers, and graduate students working in circuit design.

Low Sampling-Rate Digital Predistortion for Nonlinear Power Amplifier

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)

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Book Synopsis Low Sampling-Rate Digital Predistortion for Nonlinear Power Amplifier by :

Download or read book Low Sampling-Rate Digital Predistortion for Nonlinear Power Amplifier written by and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Distortion in RF Power Amplifiers

Author : Joel Vuolevi
Publisher : Artech House
ISBN 13 : 9781580536295
Total Pages : 280 pages
Book Rating : 4.5/5 (362 download)

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Book Synopsis Distortion in RF Power Amplifiers by : Joel Vuolevi

Download or read book Distortion in RF Power Amplifiers written by Joel Vuolevi and published by Artech House. This book was released on 2003 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a thorough treatment of distortion in RF power amplifiers. This unique resource offers expert guidance in designing easily linearizable systems that have low memory effects. It offers you a detailed understanding of how the matching impedances of a power amplifier and other RF circuits can be tuned to minimize overall distortion. What's more, you see how to build models that can be used for distortion simulations.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 744 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Recent Metaheuristics Algorithms for Parameter Identification

Author : Erik Cuevas
Publisher : Springer Nature
ISBN 13 : 3030289176
Total Pages : 297 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Recent Metaheuristics Algorithms for Parameter Identification by : Erik Cuevas

Download or read book Recent Metaheuristics Algorithms for Parameter Identification written by Erik Cuevas and published by Springer Nature. This book was released on 2019-09-03 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new, alternative metaheuristic developments that have proved to be effective in various complex problems to help researchers, lecturers, engineers, and practitioners solve their own optimization problems. It also bridges the gap between recent metaheuristic techniques and interesting identification system methods that benefit from the convenience of metaheuristic schemes by explaining basic ideas of the proposed applications in ways that can be understood by readers new to these fields. As such it is a valuable resource for energy practitioners who are not researchers in metaheuristics. In addition, it offers members of the metaheuristic community insights into how system identification and energy problems can be translated into optimization tasks.