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Near-Optimal Pulse Design for Pilot-Aided Timing Estimation in Faster-than-Nyquist Systems

Mounsif, Leila and Roque, Damien Near-Optimal Pulse Design for Pilot-Aided Timing Estimation in Faster-than-Nyquist Systems. (2021) In: 2021 28th International Conference on Telecommunications (ICT), 1 June 2021 - 3 June 2021 (London, United Kingdom).

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Official URL: https://doi.org/10.1109/ICT52184.2021.9511524

Abstract

Faster-than-Nyquist (FTN) signaling is a promising strategy to achieve high spectral efficiency at fixed constellation size, notably over power-constrained channels. However, various traditional synchronization techniques cannot be reused in presence of FTN-induced intersymbol-interference. In this paper, we focus on timing synchronization in a pilot-aided scenario, where both data and pilots are transmitted at an FTN rate. We propose a density-dependent and near-optimal pulse design with respect to the Cramér-Rao lower bound (CRB), under bandwidth and energy constraints. We show the benefits of an FTN-specific pulse design compared to conventional root-raised cosine filters; we also discuss the performance/complexity trade-off of the proposed solutions. Our results may be of interest in high-throughput systems where timing accuracy is essential (e.g., satellite communications).

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to the IEEE (Institute of Electrical and Electronics Engineers). This paper is available at : https://ieeexplore.ieee.org/document/9511524 “© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Audience (conference):International conference proceedings
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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The work of Leila Mounsif is supported by AID under grant 2018.60.0014.
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Deposited On:18 Jan 2022 14:15

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