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Analysis of the optimal linear system for multicarrier FTN communications

Abstract : Faster-than-Nyquist signalization allows for a better spectral efficiency at the expense of an increased complexity. Regarding multicarrier communications, previous work mainly relied on the study of non-linear systems exploiting coding and/or equalization techniques, with no particular optimization regarding the linear part of the system. In this paper, we analyse the behavior of the optimal linear multicarrier system when used with non-linear receiving structures (iterative decoding and direct feedback equalization), or in a standalone fashion. We also investigate the limits of the assumptions commonly made for the implementation of such non-linear systems. The use of this optimal linear system allows for a closed-form expression of the bit-error probability which can be used to predict the performances and help the design of coded systems. Our work also highlights the great performance/complexity trade-off offered by decision feedback equalization in a faster-than-Nyquist context.
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https://hal.archives-ouvertes.fr/hal-01290054
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Submitted on : Thursday, March 17, 2016 - 3:07:21 PM
Last modification on : Wednesday, November 3, 2021 - 7:51:35 AM
Long-term archiving on: : Sunday, June 19, 2016 - 2:31:57 PM

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Alexandre Marquet, Cyrille Siclet, Damien Roque. Analysis of the optimal linear system for multicarrier FTN communications. Journées scientifiques 2016 de l'URSI-France Energie et radiosciences, URSI-France, Mar 2016, Cesson-Sévigné, France. ⟨hal-01290054v2⟩

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