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Communication Dans Un Congrès Année : 2014

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

Résumé

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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Dates et versions

hal-01126473 , version 1 (06-03-2015)

Identifiants

  • HAL Id : hal-01126473 , version 1

Citer

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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