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Analysis of a FTN Multicarrier System: Interference Mitigation Based on Tight Gabor Frames

Marquet, Alexandre and Siclet, Cyrille and Roque, Damien and Siohan, Pierre Analysis of a FTN Multicarrier System: Interference Mitigation Based on Tight Gabor Frames. (2017) EAI Endorsed Transactions on Cognitive Communications, 17 (10). ISSN 2313-4534

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Official URL: http://dx.doi.org/10.4108/eai.23-2-2017.152191

Abstract

Cognitive radio applications require flexible waveforms to overcome several challenges such as opportunistic spectrum allocation and white spaces utilization. In this context, multicarrier modulations generalizing traditional cyclic-prefix orthogonal frequency-division multiplexing are particularly justified to fit time-frequency characteristics of the channel while improving spectral efficiency.In our theoretical framework, a multicarrier signal is described as a Gabor family the coefficients of which are the symbols to be transmitted and the generators are the time-frequency shifted pulse shapes to be used. In this article, we consider the case where non-rectangular pulse shapes are used with a signaling density increased such that inter-pulse interference is unavoidable. Such an interference is minimized when the Gabor family used is a tight frame. We show that, in this case, interference can be approximated as an additive Gaussian noise. This allows us to compute theoretical and simulated bit-error-probability for a non-coded system using a quadrature phase-shift keying constellation. Such a characterization is then used in order to predict the convergence of a coded system using low-density parity check codes. We also study the robustness of such a system to errors on the received bits in an interference cancellation context.

Item Type:Article
Additional Information:Thanks to EAI editor. The definitive version is available at http://eudl.eu/doi/10.4108/eai.23-2-2017.152191
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut polytechnique de Grenoble (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
Other partners > Université Pierre Mendès France, Grenoble 2 - UPMF (FRANCE)
Other partners > France Telecom (FRANCE)
Other partners > Université Joseph Fourier Grenoble 1 - UJF (FRANCE)
Other partners > Université Stendhal-Grenoble 3 - U3 (FRANCE)
Laboratory name:
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Deposited By: Damien Roque
Deposited On:07 Apr 2017 09:50

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