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Statements

Subject Item
n2:RIV%2F00216305%3A26220%2F13%3APU104173%21RIV15-MSM-26220___
rdf:type
skos:Concept n20:Vysledek
dcterms:description
Power amplifier is an essential component in communication systems. Digital baseband predistortion is a cost effective approach to linearize a power amplifier. Linearization of the power amplifiers is done by using a digital predistortion calculated from a pair of time aligned signals. In the indirect approach of calculating the predistortion, these two signals are input and output of the power amplifier converted to baseband. This paper analyzes the influence of the accuracy of the timing of these signals on the performance of the predistorter. We consider the case of an integer and a fractional lag (less than the sampling period). We show that for a predistorter without memory, even for a very small fractional offset degrades performance very significantly. The introduction of memory in the predistorter compensates for the imperfect synchronization. The experiments are performed on data measured on a Doherty power amplifier for UHF DVB-T TV broadcasting. Therefore the method is evaluated on real mea Power amplifier is an essential component in communication systems. Digital baseband predistortion is a cost effective approach to linearize a power amplifier. Linearization of the power amplifiers is done by using a digital predistortion calculated from a pair of time aligned signals. In the indirect approach of calculating the predistortion, these two signals are input and output of the power amplifier converted to baseband. This paper analyzes the influence of the accuracy of the timing of these signals on the performance of the predistorter. We consider the case of an integer and a fractional lag (less than the sampling period). We show that for a predistorter without memory, even for a very small fractional offset degrades performance very significantly. The introduction of memory in the predistorter compensates for the imperfect synchronization. The experiments are performed on data measured on a Doherty power amplifier for UHF DVB-T TV broadcasting. Therefore the method is evaluated on real mea
dcterms:title
Influence of Delay Mismatch on Digital Predistortion for Power Amplifiers Influence of Delay Mismatch on Digital Predistortion for Power Amplifiers
skos:prefLabel
Influence of Delay Mismatch on Digital Predistortion for Power Amplifiers Influence of Delay Mismatch on Digital Predistortion for Power Amplifiers
skos:notation
RIV/00216305:26220/13:PU104173!RIV15-MSM-26220___
n3:aktivita
n4:S n4:P
n3:aktivity
P(ED2.1.00/03.0072), S
n3:dodaniDat
n8:2015
n3:domaciTvurceVysledku
n7:7394489
n3:druhVysledku
n19:D
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
79722
n3:idVysledku
RIV/00216305:26220/13:PU104173
n3:jazykVysledku
n15:eng
n3:klicovaSlova
power amplifier, linearization, modeling
n3:klicoveSlovo
n14:modeling n14:linearization n14:power%20amplifier
n3:kontrolniKodProRIV
[7AF35C1F84A1]
n3:mistoKonaniAkce
Gdynia
n3:mistoVydani
Gdynia
n3:nazevZdroje
20th International Conference Mixed design of integrated circuits and systems MIXDES (2013)
n3:obor
n12:JA
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n16:ED2.1.00%2F03.0072
n3:rokUplatneniVysledku
n8:2013
n3:tvurceVysledku
Baudoin, Genevieve Mbaye, Amadou Götthans, Tomáš
n3:typAkce
n18:WRD
n3:zahajeniAkce
2013-06-20+02:00
s:numberOfPages
4
n5:hasPublisher
Neuveden
n11:isbn
978-83-63578-00-8
n21:organizacniJednotka
26220