EVM Derivation for Multicarrier Signals: Joint Impact of Non-Linear Amplification and Predistortion

Abstract : Orthogonal Frequency Division Multiplexing (OFDM) systems are extremely sensitive to nonlinear distortions brought by the Power Amplifier (PA) because of the inherent high peak-to-average power ratio (PAPR) of the signal. In this paper, we analyze the impact of the non-linearities on the output signal, assuming that the transmitter is equipped with a linearization stage before the PA. Therefore, the expression of the Error Vector Magnitude (EVM) of the output signal is analytically derived with or without the use of the linearization process. We provide analytical expressions of the EVM in the form of a series expansion that depends on the transition factors of the PA and predistortion characteristics. Simulations results confirm the accuracy of our analytical expressions, even when limiting the series expansion to an order of 4.
Type de document :
Communication dans un congrès
2015 IEEE 81ST VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), May 2015, Glasgow, United Kingdom. Proceedings of the IEEE Vehicular Technology Conference, 6 p., 2015
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Contributeur : Myriam Andrieux <>
Soumis le : lundi 26 janvier 2015 - 11:57:34
Dernière modification le : mercredi 16 mai 2018 - 11:23:49

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  • HAL Id : hal-01109408, version 1

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Ali Cheaito, Matthieu Crussiere, Yves Louët, Jean-François Hélard. EVM Derivation for Multicarrier Signals: Joint Impact of Non-Linear Amplification and Predistortion. 2015 IEEE 81ST VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), May 2015, Glasgow, United Kingdom. Proceedings of the IEEE Vehicular Technology Conference, 6 p., 2015. 〈hal-01109408〉

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