"Optimal Operating Point of the Power Amplifier with respect to the EVM for TV Broadcasting Applications"

Ali Cheaito 1 Jean-François Hélard 1 Matthieu Crussière 2 Yves Louët 1
2 SCN
IETR - Institut d'Electronique et de Télécommunications de Rennes
Abstract : "The high Power Amplifier (PA) dominates the power consumption in DVB transceiver systems and requests focusing the power efficiency improvements on this device; especially when multi-carrier modulations are used which is characterized by high Peak-to-Average Power Ratio (PAPR). In this paper, first, we provide analytical expression of the Error Vector Magnitude (EVM) of the amplified signal when polynomial predistortion and clipping techniques are activated. Secondly, a theoretical analysis of the trade-off between the power amplifier linearity and efficiency is investigated considering the performance of the clipping and predistortion techniques. Therefore, an analytical expression which gives the optimal Input Back-Off (IBO) maximizing the PA efficiency, with respect to an EVM constraint, is provided. It is demonstrated that significant power efficiency improvement can be achieved using our analytical expressions"
Type de document :
Communication dans un congrès
11th Symposium on Broadband Multimedia Systems and Boradcasting",, 2016, Nara, Japan. 2016
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https://hal-centralesupelec.archives-ouvertes.fr/hal-01318214
Contributeur : Myriam Andrieux <>
Soumis le : jeudi 19 mai 2016 - 13:33:48
Dernière modification le : mercredi 16 mai 2018 - 11:24:09

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  • HAL Id : hal-01318214, version 1

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Ali Cheaito, Jean-François Hélard, Matthieu Crussière, Yves Louët. "Optimal Operating Point of the Power Amplifier with respect to the EVM for TV Broadcasting Applications" . 11th Symposium on Broadband Multimedia Systems and Boradcasting",, 2016, Nara, Japan. 2016. 〈hal-01318214〉

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