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Oversampled phase tracking in digital communications with large excess bandwidth

Vilà-Valls, Jordi and Brossier, Jean-Marc and Ros, Laurent Oversampled phase tracking in digital communications with large excess bandwidth. (2010) Signal Processing, 90 (3). 821-833. ISSN 0165-1684

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Official URL: https://doi.org/10.1016/j.sigpro.2009.08.012

Abstract

This paper deals with the on-line carrier phase estimation in a digital receiver. We consider a Brownian phase evolution in a Data Aided scenario. The proposed study uses an oversampled signal model after matched filtering, leading to a coloured reception noise and a non-stationary power signal. The contribution of this paper is twofold. First, we derive the Bayesian Cramér-Rao Bound for this estimation problem. Then, based on a state-space model formulation of the problem, we propose an Extended Kalman Filter to approach this lower bound for a BOC shaping pulse. Our numerical results illustrate the gain resulting from the use of an oversampled version of the received signal to estimate the phase offset, obtaining better performances than using a classical synchronizer.

Item Type:Article
Additional Information:This work was supported in part by the French ANR (Agence Nationale de la Recherche), LURGA project.
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Université Grenoble Alpes - UGA (FRANCE)
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Deposited On:19 Apr 2021 14:28

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