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Round-Trip Delay Ranging with OFDM Signals -- Performance Evaluation with Outdoor Experiments

Staudinger, Emanuel und Dammann, Armin (2014) Round-Trip Delay Ranging with OFDM Signals -- Performance Evaluation with Outdoor Experiments. 11th IEEE Workshop on Positioning, Navigation and Communications, 2014-03-12 - 2014-03-13, Dresden, Germany. doi: 10.1109/WPNC.2014.6843299.

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Kurzfassung

Ranging accuracy and reliability is crucial for any cooperative- and non-cooperative positioning system applied for unmanned vehicle localization, and formation estimation. State of the art systems exploit received signal strength (RSS) from WiFi devices, or ultra-wide bandwidth (UWB) timing based range estimation. RSS proved to be unreliable in environments with multipath, and UWB combats multipath at the cost of high bandwidth and specialized hardware. We tackle this problem with round-trip delay (RTD) based range estimation with orthogonal frequency division multiplex (OFDM) modulated signals which are widely used in WiFi and 3GPP-LTE. In this paper, we present our developed prototype and two different outdoor environments with varying multipath conditions. Measurements along ground truth points are collected for each environment and post-processed. We apply four different estimators, two based on cross-correlation and interpolation, and two based on Maximumlikelihood (ML) multipath estimation. Our analysis reveals that a simple correlation based estimator with interpolation and smart thresholding is sufficient and a very good trade-off between computational complexity and accuracy compared to ML multipath estimators. These outdoor experiments show that our simple ranging technique is suitable for peer-to-peer distance estimation with low bandwidth, low transmit power, and can be exploited for localization and formation estimation in cyber-physical systems.

elib-URL des Eintrags:https://elib.dlr.de/88359/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Round-Trip Delay Ranging with OFDM Signals -- Performance Evaluation with Outdoor Experiments
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Staudinger, EmanuelEmanuel.Staudinger (at) dlr.dehttps://orcid.org/0000-0002-9601-2887NICHT SPEZIFIZIERT
Dammann, ArminArmin.Dammann (at) DLR.dehttps://orcid.org/0000-0002-7112-1833NICHT SPEZIFIZIERT
Datum:12 März 2014
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
DOI:10.1109/WPNC.2014.6843299
Status:veröffentlicht
Stichwörter:OFDM, correlation Receiver, channel estimation, synchronization, 3GPP-LTE, unmanned vehicles, measurements
Veranstaltungstitel:11th IEEE Workshop on Positioning, Navigation and Communications
Veranstaltungsort:Dresden, Germany
Veranstaltungsart:internationale Konferenz, Workshop
Veranstaltungsbeginn:12 März 2014
Veranstaltungsende:13 März 2014
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation und Navigation
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KN - Kommunikation und Navigation
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben GNSS2/Neue Dienste und Produkte (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Nachrichtensysteme
Hinterlegt von: Staudinger, Dr.-Ing. Emanuel
Hinterlegt am:16 Jul 2014 09:50
Letzte Änderung:24 Apr 2024 19:54

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