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AICT, Barcelona : Espagne (2010)

Information theoretic approach to synchronization: the OFDM carrier frequency offset example

Romain Couillet 1, Merouane Debbah 2

(2010)

In practical mobile communication systems, data-aided synchronization is performed before actual data exchanges, and synchronization methods are tailored to the pilot sequence. In this paper, we propose a framework for initial synchronization that works independently of the pilot sequence. We show that classical data-aided and blind techniques are particular cases of this general framework. We thoroughly study the specific problem of OFDM data-aided carrier frequency offset estimation. For the latter, we provide theoretical expressions of performance upper-bounds. Also, a practical thin CFO estimator for OFDM is provided under the form of a novel algorithm which is shown by simulations to perform better than classical pilot based methods.

1 :	Chaire Sciences des Systèmes et Défis Énergétiques
	SUPELEC
2 :	Supélec Sciences des Systèmes - EA4454 (E3S)
	SUPELEC

Domaine

:

Informatique/Théorie de l'information et codage Mathématiques/Théorie de l'information et codage

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Contributeur : Samir Medina Perlaza <>

Soumis le : Vendredi 7 Janvier 2011, 22:39:47

Dernière modification le : Lundi 10 Janvier 2011, 10:14:56