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Baseband Volterra filters for implementing carrier based nonlinearities

G.M. Raz, B.D. van Veen
1998 IEEE Transactions on Signal Processing  
A diagonal coordinate representation for Volterra filters is developed and exploited to derive efficient Volterra filter implementations for processing carrier based input signals.  ...  Hence, linear filtering methods are employed to implement the nonlinear filter on a baseband version of the input. Downsampling is then used to reduce computational complexity.  ...  It also allows use of standard linear filtering techniques. The efficient implementation of systems with carrier based inputs are obtained by performing filtering on baseband signals.  ... 
doi:10.1109/78.651189 fatcat:mmg4wxqdk5cblavi2i5cm6cepe

Novel Baseband Equivalent Models of Quadrature Modulated All-Digital Transmitters [article]

Omer Tanovic, Rui Ma, Koon Hoo Teo
2017 arXiv   pre-print
This result suggests a new analytically motivated structure of a digital predistortion (DPD) of SMPA nonlinearities in ADT.  ...  Numerical simulations in MATLAB are used to verify proposed baseband equivalent model.  ...  well suited for practical implementations due to long memory requirements (of the nonlinear part) which would require exponentially large number of coefficients.  ... 
arXiv:1702.03596v1 fatcat:oxihircpwvdk3gbegcepzkw3pe

Frequency-Selective Predistortion Linearization of RF Power Amplifiers

Patrick Roblin, Suk Keun Myoung, Dominique Chaillot, Young Gi Kim, Ayub Fathimulla, Jeff Strahler, Steven Bibyk
2008 IEEE transactions on microwave theory and techniques  
The baseband linearization algorithm is next implemented in a field-programmable gate array and experimentally investigated for the linearization of the class-AB LDMOS PA for two carrier wideband code-division  ...  Differential memory effects can be revealed in two-tone experiment by the divergence for increasing tone-spacing of the vector Volterra coefficients associated with the lower and upper intermodulations  ...  VOLTERRA/WIENER REPRESENTATION The most rigorous theory for including memory effects in not-strongly nonlinear systems is Volterra formalism [11] - [13] .  ... 
doi:10.1109/tmtt.2007.912241 fatcat:mm6di42q6jcipik4tqf3s7mfu4

Behavioral modeling for digital predistortion of RF power amplifiers: from Volterra series to CPWL functions

Anding Zhu
2016 2016 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications (PAWR)  
MODELING REQUIREMENTS Most predistorters today are implemented in digital baseband.  ...  This conclusion was based on that the PA nonlinearity is represented by a polynomial or Volterra function and the modulated signal is bandlimited.  ... 
doi:10.1109/pawr.2016.7440126 fatcat:7mnfursuffah3gob3lj6gm5tve

Band-Limited Volterra Series-Based Digital Predistortion for Wideband RF Power Amplifiers

Chao Yu, Lei Guan, Erni Zhu, Anding Zhu
2012 IEEE transactions on microwave theory and techniques  
under modeling, which logically transforms the general Volterra series-based model into a band-limited version.  ...  In future ultra wideband systems, this new technique can significantly improve system performance and reduce DPD implementation cost.  ...  The model based on the new band-limited basis function can be used to represent a wide range of nonlinear systems, including the general Volterra series if the filter bandwidth is set to infinite.  ... 
doi:10.1109/tmtt.2012.2222658 fatcat:x5vdt2eel5hy3l3ffv4l3h4u54

Bandwidth-efficient recursive pth-order equalization for correcting baseband distortion in parametric loudspeakers

Kelvin Chee-Mun Lee, Woon-Seng Gan
2006 IEEE Transactions on Audio, Speech, and Language Processing  
A bandwidth-efficient recursive implementation of th-order equalization is developed in order to correct the inherent baseband distortion in parametric loudspeakers.  ...  Assuming that the nonlinear system is largely quadratic, a substitution of it can be made by using an analytic pair of all-pass sections cascaded with a squared magnitude block.  ...  Square-root preprocessing method for correcting baseband distortion. Fig. 2 . 2 Fig. 2. SSB-based nonlinear model M[1] as proposed by Spencer et al. Fig. 3 . 3 Fig. 3.  ... 
doi:10.1109/tsa.2005.855830 fatcat:wvwblsrl2ze43gktnqjkghp5hi

MIMO Volterra Modeling for Nonlinear Communication Channels

Carlos Alexandre R. Fernandes, João Cesar M. Mota, Gérad Favier
2010 Learning and Nonlinear Models  
This development constitutes the basis for several versions of discrete-time equivalent baseband MIMO Volterra systems presented in the sequel.  ...  An overview of the modeling of nonlinear communication channels using MIMO Volterra models is presented in this paper.  ...  Equivalent baseband Volterra channel The digital signal processing techniques for communications are generally based on discrete-time equivalent baseband representations of the received signals, which  ... 
doi:10.21528/lnlm-vol8-no2-art1 fatcat:djjk2bqnpzdxjmdqzgy7rrlopy

Linearization of Concurrent Tri-Band Transmitters Using 3-D Phase-Aligned Pruned Volterra Model

Mayada Younes, Andrew Kwan, Meenakshi Rawat, Fadhel M. Ghannouchi
2013 IEEE transactions on microwave theory and techniques  
The proposed tri-band DPD is based on a pruned Volterra model that takes into account the impact of the phase distortion observed in multi-band PAs as well as the compound amplitude distortion.  ...  Index Terms-Digital predistortion (DPD), long-term evolution (LTE) advanced carrier aggregation (CA), power amplifier (PA), tri-band, Volterra series.  ...  Simon, Department of Electrical and Computer Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, Canada, for providing technical support for the experimental measurements.  ... 
doi:10.1109/tmtt.2013.2287176 fatcat:cayhasynmvh7togcha2mcqmw3e

Evolution of Black-Box Models Based on Volterra Series

Daniel D. Silveira, Thiago V. N. Coelho, Alexandre Bessa dos Santos
2015 Journal of Applied Mathematics  
It also discusses the evolution of these models, from a single polynomial to multirate Volterra models, presenting equations and estimation methods.  ...  The excitation signals are complex valued, and as a practical issue only first-zone filtered (baseband) equivalent BMs are frequently used, due to the difficulties to implement bandpass models in hardware  ...  Unfortunately, this equation is valid only for real valued signals. Complex Valued Baseband Volterra Series.  ... 
doi:10.1155/2015/638978 fatcat:nr277gewsnexbakems4fskszrm

A General Architecture for Behavior Modeling of Nonlinear Power Amplifier using Deep Convolutional Neural Network [article]

Xin Hu, Zhijun Liu, You Li, Lexi Xu, Sun Zhang, Qinlong Li, Jia Hu, Wenhua Chen, Weidong Wang, Mohamed Helaoui, Fadhel M. Ghannouchi
2020 arXiv   pre-print
The Volterra model, several compact Volterra models and neural network models to establish a nonlinear model of power amplifier have all been demonstrated.  ...  However, the computational cost of these models increases and their implementation demands more signal processing resources as the signal bandwidth gets wider or the number of carrier aggregation.  ...  Using the baseband modulated signal and the sampled baseband signal, the modeling of the nonlinear PA can be build.  ... 
arXiv:2006.03763v1 fatcat:3e6u52kd3fazlhymic4mh4nrta

An Overview of Volterra Series Based Behavioral Modeling of RF/Microwave Power Amplifiers

Anding Zhu, Thomas J. Brazil
2006 2006 IEEE Annual Wireless and Microwave Technology Conference  
This paper presents an overview of recentlydeveloped, simplified Volterra series based, behavioral modeling approaches for radio frequency and microwave power amplifiers.  ...  real implementations.  ...  Conclusions A short overview of various simplified Volterra series based behavioral models for RF/microwave power amplifiers has been presented in this paper.  ... 
doi:10.1109/wamicon.2006.351917 fatcat:5xmdeofnk5d35godyjv764q2ia

Characterization of spectral regrowth in microwave amplifiers based on the nonlinear transformation of a complex Gaussian process

K.G. Gard, H.M. Gutierrez, M.B. Steer
1999 IEEE transactions on microwave theory and techniques  
A statistical technique is presented for the characterization of spectral regrowth at the output of a nonlinear amplifier driven by a digitally modulated carrier in a digital radio system.  ...  The technique is used in evaluating the spectral regrowth for a CDMA signal.  ...  A landmark publication by Bedrosian and Rice [11] considered the case of nonlinear systems with memory and developed expressions for the Volterra transfer functions (Fourier transforms of the Volterra  ... 
doi:10.1109/22.775437 fatcat:3cphf4iedfch3h3z7tus3vpug4

Single-Model Single-Feedback Digital Predistortion for Concurrent Multi-Band Wireless Transmitters

Chao Yu, Jing Xia, Xiao-Wei Zhu, Anding Zhu
2015 IEEE transactions on microwave theory and techniques  
Meng in Southeast University, China for his help on the experimental measurements.  ...  Firstly, we let the baseband signals , , … , pass a carrier relocation module to form a composite multi-band signal based on the carrier relocation technique, for instance, it can be expressed as, 2' 1  ...  For instance, in this case, DPD may only be used to remove distortion near each carrier for 100 MHz. The rest of distortion can be attenuated by using a band-pass filter.  ... 
doi:10.1109/tmtt.2015.2429633 fatcat:t32qwina4beankrux5zkdm6umq

Behavioral modeling of RF power amplifiers based on pruned volterra series

A. Zhu, T.J. Brazil
2004 IEEE Microwave and Wireless Components Letters  
Index Terms-Behavioral model, FIR digital filters, power amplifier, Volterra series.  ...  To model a PA with strong nonlinearities and long memory effects, for example, the general Volterra model involves a great number of coefficients.  ...  FIR filter to implement 1531-1309/04$20.00 © 2004 IEEE the convolution for each row of separately.  ... 
doi:10.1109/lmwc.2004.837380 fatcat:l4qeo7wlefa4no7q6jftcjkcza

Nonlinear Noise Compensation in an Integration System of Fiber-Wireless Communication and Free Space Optical Communication

Long Chen, Miao Liu, Zhijun Tang
2020 Advances in Condensed Matter Physics  
We propose and experiment an integration system of fiber-wireless communication and free space optical (FSO) communication based on nonlinear noise compensation.  ...  The nonlinear equalizer is employed to compensate the distortion caused by the beating between OFDM signal subcarriers in the combination system.  ...  M stands for the number of the taps in two filters. e Volterra equalizer shown in equation ( 2 ) is applied to the integration system to eliminate nonlinear noise.  ... 
doi:10.1155/2020/9605607 doaj:6109769ea64c4ddcbfbf47b2164776f9 fatcat:adajsuyv5vdm3glkkm3dpfhyie
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