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Sidelobe Suppression with Cancellation Carriers for OFDM Based Overlay Systems

Brandes, Sinja and Schnell, Michael (2005) Sidelobe Suppression with Cancellation Carriers for OFDM Based Overlay Systems. In: Proceedings of the 10th International OFDM-Workshop (InOWo '05), pp. 235-239. 10th International OFDM-Workshop (InOWo '05), 2005-08-30 - 2005-09-01, Hamburg, Germany.

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Orthogonal frequency-division multiplexing (OFDM) systems exhibit significant out-of-band radiation caused by high sidelobes of the modulated subcarriers. Especially in OFDM based overlay systems the suppression of these sidelobes is one of the most important issues in order to enable the coexistence of two systems in the same frequency band. In this paper, we propose a new technique for sidelobe suppression characterized by the insertion of a few so-called cancellation carriers (CCs) on the left and right hand side of the used OFDM spectrum. These special subcarriers are not employed for data transmission, but carry complex weighting factors which are determined such that the sidelobes of transmission signal and CCs cancel each other. Simulation results show that with the proposed method a significant sidelobe suppression is achieved with only a small loss in bit error rate performance. This loss can be minimized by a slight modification of the receiver.

Item URL in elib:https://elib.dlr.de/22731/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Sidelobe Suppression with Cancellation Carriers for OFDM Based Overlay Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:August 2005
Journal or Publication Title:Proceedings of the 10th International OFDM-Workshop (InOWo '05)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 235-239
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:OFDM, overlay systems, cancellation carriers
Event Title:10th International OFDM-Workshop (InOWo '05)
Event Location:Hamburg, Germany
Event Type:international Conference
Event Start Date:30 August 2005
Event End Date:1 September 2005
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation (old)
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Effiziente Flugführung und Flugbetrieb (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Brandes, Sinja
Deposited On:15 Mar 2006
Last Modified:24 Apr 2024 19:04

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