DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Compensation of the Impact of Interference Mitigation by Pulse Blanking in OFDM Systems

Brandes, Sinja und Epple, Ulrich und Schnell, Michael (2009) Compensation of the Impact of Interference Mitigation by Pulse Blanking in OFDM Systems. In: Proc. of IEEE Globecom 2009. IEEE Global Communications Conference (GlobeCom) 2009, 30.11. - 4.12.2009, Honolulu, HI, USA. ISBN 978-1-4244-4148-8. ISSN 1930-529X

[img] PDF - Nur angemeldete Benutzer - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


When pulsed interference is mitigated by means of pulse blanking, interference is reduced significantly. However, at the same time certain fractions of the useful orthogonal frequency-division multiplexing (OFDM) signal are erased. Consequently, only moderate improvements are achieved with pulse blanking. When representing the pulse blanking operation as multiplication with a rectangular window exhibiting notches at the positions where blanks are inserted, it becomes obvious, that pulse blanking mainly leads to inter-carrier interference (ICI). In this paper, the compensation of the impact of pulse blanking is proposed by reconstructing and subtracting ICI. The required shape of the subcarrier spectra is derived from the pulse blanking window. For an estimation of the transmitted data symbols and the channel coefficients of each subcarrier an iterative receiver structure is proposed. Simulation results at hand of a realistic interference scenario show that with perfect channel estimation and known data symbols the impact of pulse blanking can be reduced to a small loss in signal-to-noise ratio resulting from the energy loss due to erasing a certain fraction of the OFDM signal. With real channel estimation and estimated data symbols, the ideal case with perfect channel estimation and known data symbols is approached by 1.2 dB after only three iterations.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Compensation of the Impact of Interference Mitigation by Pulse Blanking in OFDM Systems
AutorenInstitution oder E-Mail-Adresse der Autoren
Datum:30 November 2009
Erschienen in:Proc. of IEEE Globecom 2009
Referierte Publikation:Ja
In ISI Web of Science:Nein
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
NICHT SPEZIFIZIERTThe Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Stichwörter:OFDM, pulse blanking, compensation
Veranstaltungstitel:IEEE Global Communications Conference (GlobeCom) 2009
Veranstaltungsort:Honolulu, HI, USA
Veranstaltungsdatum:30.11. - 4.12.2009
Veranstalter :IEEE
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:ATM und Flugbetrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Luftverkehrsmanagement und Flugbetrieb
DLR - Teilgebiet (Projekt, Vorhaben):L - Effiziente Flugführung und Flugbetrieb (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation
Hinterlegt von: Sinja Brandes
Hinterlegt am:11 Jan 2010 11:09
Letzte Änderung:12 Dez 2013 20:40

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Hilfe & Kontakt
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.