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Adaptive Predistortion techniques for non-linearly ampli?ed FBMC-OQAM signals

Abstract : The Filter Bank Multicarrier with Offset Quadra- ture Amplitude Modulation (FBMC-OQAM) is emerging as one of the alternatives to Orthogonal Frequency Division Multi- plexing (OFDM) for next generation broadband wireless access systems. In this paper, we focus on the nonlinear distortion effects in a FBMC-OQAM system when the signal is passed through a nonlinear High Power Ampli?er (HPA) which is modeled as Saleh?s one exhibiting amplitude and phase distortions. First, we develop an analysis showing that the FBMC-OQAM signals are more sensitive to the phase distortion than OFDM signals. Then, we address the problem of the compensation of these distortions in FBMC-OQAM systems using digital predistortion (DPD) at the transmitter. Therefore, two DPD schemes are considered in this investigation and their performance are compared in OFDM and FBMC-OQAM systems.
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https://hal.archives-ouvertes.fr/hal-01126473
Contributor : Laboratoire Cedric <>
Submitted on : Friday, March 6, 2015 - 11:57:58 AM
Last modification on : Friday, January 24, 2020 - 1:10:05 PM

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  • HAL Id : hal-01126473, version 1

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Rafik Zayani, Yahia Medjahdi, Hanen Bouhadda, Hmaied Shaiek, Daniel Roviras, et al.. Adaptive Predistortion techniques for non-linearly ampli?ed FBMC-OQAM signals. VTC 2014, May 2014, X, South Korea. pp.1-5. ⟨hal-01126473⟩

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