Delay Estimation for DVB-T Signals in Adverse Multipath Scenarios

Liang Chen 1 Elena Simona Lohan 2 Olivier Julien 3 Paul Thevenon 3 Christophe Macabiau 4 Laura Ruotsalainen 1 Heidi Kuusniemi 1
1 FGI - Finnish Geodetic Institute
2 TUT - Tampere University of Technology [Tampere]
3 SIGNAV - ENAC Equipe TELECOM-SIGNAV
TELECOM - ENAC - Laboratoire de Télécommunications
4 TELECOM - ENAC - Laboratoire de Télécommunications
Abstract : Timing approaches, such as time of arrival (TOA) and time difference of arrival (TDOA), employed with DVB-T are sensitive to the presence of multipath errors. This paper studies the delay estimation in adverse multipath scenarios using the DVB-T signals. A data-directed delay tracking mechanism is presented for signal tracking to estimate the time delay. Three different delay locked loops (DLLs) are considered to mitigate the multipath errors, i.e. the early minus late (EML), the narrow EML (nEML) and the High Resolution Correlator (HRC). Simulation results are compared for tracking the DVB-T signals in the suggested Rice and Rayleigh channels. Simulation results show that the correlation outputs of the DVB-T signals are relatively smooth, which cause the DLLs difficulty to detect the closely spaced multipaths. For tracking the first peak of the correlation, HRC and nEML are better than EML.
Keywords : DLL DVB-T signals HRC Rayleigh channels Rice channels TDOA estimation TOA estimation
Type de document :
Communication dans un congrès
ICL-GNSS 2014 International Conference on Localization and GNSS, Jun 2014, Helsinki, Finland. IEEE, pp.1-6, 〈10.1109/ICL-GNSS.2014.6934167〉
Liste complète des métadonnées

Littérature citée [25 références]  Voir  Masquer  Télécharger
https://hal-enac.archives-ouvertes.fr/hal-01158737
Contributeur : Laurence Porte <>
Soumis le : lundi 1 juin 2015 - 19:54:24
Dernière modification le : mercredi 10 octobre 2018 - 10:02:02
Document(s) archivé(s) le : lundi 24 avril 2017 - 21:30:32

Fichier

3 - Delay Estimation for DVB-T...
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

ENAC | TELECOM | TELECOM-SIGNAV

Citation

Liang Chen, Elena Simona Lohan, Olivier Julien, Paul Thevenon, Christophe Macabiau, et al.. Delay Estimation for DVB-T Signals in Adverse Multipath Scenarios. ICL-GNSS 2014 International Conference on Localization and GNSS, Jun 2014, Helsinki, Finland. IEEE, pp.1-6, 〈10.1109/ICL-GNSS.2014.6934167〉. 〈hal-01158737〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

132

Téléchargements de fichiers

454

Picto

Contact  : publications@enac.fr