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

Publication Type:

Conference Paper


Sixth Advanced International Conference on Telecommunications, Barcelona,Spain (2010)


In practical mobile communication systems, dataaided 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.

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