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Timing Estimation based on Higher-Order Cyclostationarity for Faster-than-Nyquist Signals

López Morales, Manuel José and Roque, Damien and Benammar, Meryem Timing Estimation based on Higher-Order Cyclostationarity for Faster-than-Nyquist Signals. (2019) IEEE Communications Letters. 1-4. ISSN 1089-7798

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Official URL: https://doi.org/10.1109/LCOMM.2019.2922182


Faster-than-Nyquist (FTN) transmission is a promising technique to increase spectral efficiency at fixed constellation size. However, traditional timing synchronization algorithms mostly rely on the eye diagram opening after matched-filtering (e.g., Gardner, zero-crossing). Such approaches are thus unsuitable in presence of FTN-induced intersymbol interference. In this paper, we first show that FTN signals exhibit cyclostationarity at the lth-order (l > 2) according to their bandwidth and symbol period. Then, we derive non-data-aided timing offset estimators from the cyclic temporal cumulant function. Besides its relevance for strong FTN scenarios, the proposed solution is also robust to frequency and phase offsets.

Item Type:Article
Additional Information:Thanks to the IEEE (Institute of Electrical and Electronics Engineers). This paper is available at : https://ieeexplore.ieee.org/document/8734847 “© 2019 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 (journal):International peer-reviewed journal
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Universidad Carlos III de Madrid - UC3M (SPAIN)
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Deposited On:19 Jun 2019 08:45

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