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On the Blind Estimation of Chip Time of Time-Hopping Signals Through Minimization of a Multimodal Cost Function

Mihai Stanciu 1 Stéphane Azou 2 Alexandru Serbanescu 3
2 Lab-STICC_UBO_CACS_COM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
Abstract : In this correspondence, we focus on blind estimation of the chip duration of time-hopping signals by introducing a cost function based on time-of-arrival (ToA) folding over multiple observation sets. An opti- mization algorithm that takes advantage of the highly oscillatory behavior in the nearby of the global minimum is proposed and a performance bound for the chip time estimate is derived. The pertinence of our approach is shown through numerical results, considering alternative methods like pe- riodogram and separable least squares line search. The proposed technique enables a good tradeoff between statistical accuracy and computational complexity.
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https://hal.univ-brest.fr/hal-00657241
Contributor : Stéphane Azou <>
Submitted on : Friday, January 6, 2012 - 10:11:31 AM
Last modification on : Wednesday, June 24, 2020 - 4:19:22 PM

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Mihai Stanciu, Stéphane Azou, Alexandru Serbanescu. On the Blind Estimation of Chip Time of Time-Hopping Signals Through Minimization of a Multimodal Cost Function. IEEE Transactions on Signal Processing, Institute of Electrical and Electronics Engineers, 2011, 59 (2), pp.842-847. ⟨10.1109/TSP.2010.2090872⟩. ⟨hal-00657241⟩

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