Digital predistortion of LTE-A power amplifiers using compressed-sampling-based unstructured pruning of Volterra series

A Abdelhafiz, A Kwan, O Hammi… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
This paper presents a method for pruning power amplifier (PA) behavioral models and
digital predistorters based on compressed sampling theory. Using this method, the number …

Output impedance mismatch effects on the linearity performance of digitally predistorted power amplifiers

E Zenteno, M Isaksson, P Händel - IEEE transactions on …, 2015 - ieeexplore.ieee.org
This paper analyzes the effects of load impedance mismatch in power amplifiers which
linearity has been enhanced using various digital predistortion (DPD) algorithms. Two …

A parameter‐reduced Volterra model for dynamic RF power amplifier modeling based on orthonormal basis functions

M Isaksson, D Rönnow - … of RF and Microwave Computer‐Aided …, 2007 - Wiley Online Library
A nonlinear dynamic behavioral model for radio frequency power amplifiers is presented. It
uses orthonormal basis functions, Kautz functions, with complex poles that are different for …

Energy-efficient digital predistortion with lookup table training using analog Cartesian feedback

SW Chung, JW Holloway… - IEEE Transactions on …, 2008 - ieeexplore.ieee.org
We demonstrate energy-efficient low-complexity adaptive linearization for wideband
handset power amplifiers (PAs). Due to power overhead and complexity, traditional …

Digital predistortion of single and concurrent dual-band radio frequency GaN amplifiers with strong nonlinear memory effects

S Amin, P Händel, D Rönnow - IEEE transactions on microwave …, 2017 - ieeexplore.ieee.org
Electrical anomalies due to trapping effects in gallium nitride (GaN) power amplifiers (PAs)
give rise to long-term or strong memory effects. We propose novel models based on infinite …

Distortion mitigation in RF power amplifiers through FPGA-based amplitude and phase predistortion

JL Mato, M Pereira… - IEEE Transactions …, 2008 - ieeexplore.ieee.org
Strong requirements are currently imposed to limit the negative effects of distortion or bad
synchronization between emitter and receiver in digital communication channels. Distortion …

Digital baseband modeling and correction of radio frequency power amplifiers

P Landin - 2012 - diva-portal.org
Aspects related to behavioral modeling and correction of distortions for radio frequency (RF)
power amplifiers (PAs) are treated in the thesis. When evaluating the performance of a …

Peak-power controlled digital predistorters for RF power amplifiers

PN Landin, W Van Moer, M Isaksson… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
This paper investigates the issue of “predistorter blow-up,” ie, uncontrolled peak expansion
caused by the predistorter. To control the peak expansion, an extension of the multistep …

Adaptive nonlinearity compensation technique for 4G wireless transmitters

M Cabarkapa, N Neskovic, A Neskovic… - Electronics …, 2012 - search.proquest.com
A new adaptive digital predistortion based on an iterative injections approach is
experimentally verified using a 4G signal. An error vector magnitude and spectrum regrowth …

Modeling analog to digital converters at radio frequency

N Björsell - 2007 - diva-portal.org
This work considers behavior modeling of analog to digital converters with applications in
the radio frequency range, including the field of telecommunication as well as test and …