Power amplifier linearization with memory effects using digital pre-distortion and genetic algorithms

Sperlich, R.; Sills, J.A.; Kenney, J.S.

doi:10.1109/rawcon.2004.1389149

Cited by 13 publications

(3 citation statements)

References 3 publications

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“…Among all the linearization techniques, digital predistortion (DPD) is the most efficient and cost effective technique [5]. Memory polynomial PA model is a simplified model based on indirect learning architecture.…”

Section: Fig 1: Error Vector Magnitudementioning

confidence: 99%

Analysis and Simulations of the Effects of Non-linearity on the Radio Frequency Power Amplifier Modelling

Kaur¹,

Patterh²

2015

IJCA

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Radio frequency power amplifiers play a key role in transceivers for mobile communications and their linearity is a crucial aspect. In order to meet the linearity requirements dictated by the standard at a reasonable efficiency, the usage of a linearization technique is desired. For effective implementation of any linearization technique, accurate modelling of power amplifier is required. Due to its less complexity, memory polynomial has been widely used for modelling non-linear system with memory. So in this paper, memory polynomial has been used to model the wideband power amplifier. The effects of nonlinearity order and memory depth on the power amplifier modeling have also been simulated.

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Section: Fig 1: Error Vector Magnitudementioning

confidence: 99%

Analysis and Simulations of the Effects of Non-linearity on the Radio Frequency Power Amplifier Modelling

Kaur¹,

Patterh²

2015

IJCA

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“…The genetic algorithm (GA) [9] is utilized to search and estimate the coefficients of predistorter in this paper. Based on the GA theory, the predistorter coefficients, i.e.…”

Section: B Performance Measures and Updating Algorithmmentioning

confidence: 99%

Performance analysis for scalar digital predistortion

Shi

Zhou

et al. 2013

2013 IEEE Radio and Wireless Symposium

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The scalar digital predistortion (DPD) technology is an attractive linearization method for power amplifier (PA). By using the method, the hardware is simplified greatly because only the out-band distortion power is feedback to train the predistorter. In terms of low cost, the scalar method has obvious advantages over the conventional vector method. However, it is unknown whether there is linearization performance loss in the scalar DPD method. In this paper, the scalar DPD method is modeled and analyzed. The phase rotation phenomenon of the scalar DPD method is revealed. The theoretical analysis results prove the equivalence of the two DPD methods with phase rotation compensation in the memoryless condition. The equivalence is verified by using the numerical simulation.

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“…[4], [5], [6]& [7] discuss the predistortion for the OFDM(A) systems. In [8]& [9] neural network and genetic algorithm based predistortion is proposed respectively. It is worth noting that predistortion for OFDM(A) system is different from single carrier systems.…”

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confidence: 99%

Novel Predistortion Algorithm for OFDMA

Ali

Markarian

Arıkan³

2009

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference

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Abstract-The RF amplifier in a wireless communication system is usually non-linear in nature. If such an amplifier is used in OFDMA based systems, it will cause serious degradation. This degradation will be both in terms of the reduction in BER and the generation of out of band noise. In this paper we have worked on the linearization method of the amplifier. This work is on a hybrid methodology, in which estimation of the model is performed in frequency domain and compensation is performed in time domain. The downlink preamble of the IEEE802.16e system is used here for the estimation purpose. The results for the suppression of spectra are shown at the end.

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Power amplifier linearization with memory effects using digital pre-distortion and genetic algorithms

Cited by 13 publications

References 3 publications

Analysis and Simulations of the Effects of Non-linearity on the Radio Frequency Power Amplifier Modelling

Analysis and Simulations of the Effects of Non-linearity on the Radio Frequency Power Amplifier Modelling

Performance analysis for scalar digital predistortion

Novel Predistortion Algorithm for OFDMA

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