Estimation of the symbol rate of linearly modulated sequences of symbols

Authors:
Pierre Jallon;Antoine Chevreuil
Affiliations:
Equipe Signal et Communications, Institut Gaspard Monge, University of Marne-la-vallee, UMR 8049 CNRS IGMLabInfo, France and CEA-LETI MINATEC, 17 rue des Martyrs, 38000 Grenoble, France;CEA-LETI MINATEC, 17 rue des Martyrs, 38000 Grenoble, France
Venue:
Signal Processing
Year:
2008

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Abstract

The blind estimation of the symbol rate is one of the main issues for blind characterization of linearly modulated sequences. The estimator proposed in this article is based on the autocorrelation function of this kind of signal and exploits its limited frequency support. We prove theoretically that taking into account this property to modify some classical algorithms allows improving significantly their performances. We illustrate this result by numerical simulations, and we show that our estimator correctly detect the symbol rate in nearly 100% of the cases in many contexts as long as the signal to noise ratio is higher than 5dB.