Modeling and Digital Predistortion Design of RF Power Amplifier Using Extended Memory Polynomial

Adaptive Digital Baseband Predistortion for RF Power Amplifier Linearization

Power amplifiers (PAs) are vital components in many communication systems. To be transmitted wirelessly, a signal must be amplified with high fidelity so as to account for attenuation through the channel or propagation medium. The linearity of a PA response constitutes an important factor that ensures signal integrity and reliable performance of the communication system. Unfortunately, PAs are ...

Power Amplifier Modeling and Power Amplifier Predistortion in Ofdm System

This paper presents a baseband predistorter to be used in OFDM systems operating with a nonlinear high power amplifier (HPA). Key features of the predistorter reside in the use of the HPA inverse structure as nonlinear distortion compensator. The performance of the compensated system is analyzed by simulations in an AWGN environment. The receiver also needs furthermore an equalizer in order to ...

Multi Look-Up Table Digital Predistortion for RF Power Amplifier Linearization

Power Amplifier Linearization Using Digiital Predistortion

For wideband or high power applications, the power amplifier exhibits memory effects, for which memory less predistorters can achieve only limited linearization performance. The memory polynomial predistorter can correct both the nonlinear distortions and the linear frequency response that may exist in the power amplifier. It is a robust predistorter, which has demonstrated good performance on ...

Behavioral Modeling Accuracy for RF Power Amplifier with Memory Effects

In this paper, a system level behavioural model for RF power amplifier, which exhibits memory effects, and based on multibranch system is proposed. When higher order terms are included, the memory polynomial model (MPM) exhibits numerical instabilities. A set of memory orthogonal polynomial model (OMPM) is introduced to alleviate the numerical instability problem associated to MPM model. A data...