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Faster-than-Nyquist signaling: on linear and non-linear reduced-complexity turbo equalization

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Abstract

In the framework of digital video broadcasting by satellite-second generation (DVB-S2), we analyze a faster-than-Nyquist (FTN) system based on turbo equalization and low-density parity-check (LDPC) codes. Truncated maximum a posteriori and minimum mean square error equalizers provide a reduced-complexity implementation of the FTN system. On the other hand, LDPC codes allow us to demonstrate attractive performance results over an additive white Gaussian noise channel while increasing spectral efficiency beyond the Nyquist rate and keeping a complexity comparable to that of a current DVB-S2 modem.

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Notes

  1. Such condition is sometimes not fulfilled and an approximate factorization is performed.

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Acknowledgements

This work has been supported by the Direction Générale de l’Armement (DGA) under the CIFRE Grant 10/2015/DGA.

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Authors and Affiliations

  1. Eutelsat S.A., Paris, France

    Albert Abelló & Jean-Marie Freixe

  2. Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO), Université de Toulouse, Toulouse, France

    Damien Roque

  3. Direction Générale de l’Armement, Rennes, France

    Sébastien Mallier

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  1. Albert Abelló
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  2. Damien Roque
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  3. Jean-Marie Freixe
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  4. Sébastien Mallier
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Correspondence to Albert Abelló.

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Abelló, A., Roque, D., Freixe, JM. et al. Faster-than-Nyquist signaling: on linear and non-linear reduced-complexity turbo equalization. Analog Integr Circ Sig Process 91, 267–276 (2017). https://doi.org/10.1007/s10470-017-0937-z

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  • DOI: https://doi.org/10.1007/s10470-017-0937-z

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