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Digital RFI suppression in DMT-based VDSL systems
Luleå tekniska universitet.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0003-0413-4826
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.ORCID iD: 0000-0001-7620-9386
Luleå tekniska universitet.
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1998 (English)In: ICT '98: International Conference on Telecommunications : bridging east & west through telecommunications : 21-25 June 1998, Porto Carras, Greece / [ed] F-N. Pavlidou, 1998, Vol. 2, 189-193 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we describe a method for supressing Radio Frequency Interference (RFI) in Discrete Multitone (DMT) based Very High bit rate Digital Subscriber Line systems. The method operates in the frequency domain of a DMT-system. It is based on a Taylor-expanded transfer function which maps the disturbance from the RF-signal onto the DMT-carriers. By measuring the RF-disturbance on a few unmodulated DMT-carriers we are able to subtract estimates of the disturbance from every modulated DMT-carrier. The RF-signal is assumed to be an unknown narrowband signal. Simulation results show that this method, applied to an RFI-signal with the same average power as the VDSL-signal, reduces the SNR-loss from about 20 dB to less than 1 dB.

Place, publisher, year, edition, pages
1998. Vol. 2, 189-193 p.
National Category
Signal Processing Mathematical Analysis
Research subject
Signal Processing; Mathematics
Identifiers
URN: urn:nbn:se:ltu:diva-37563Local ID: ba078420-dfbd-11dc-9e29-000ea68e967bOAI: oai:DiVA.org:ltu-37563DiVA: diva2:1011061
Conference
International Conference on Telecommunications : 01/06/1998 - 02/06/1998
Note
Godkänd; 1998; 20080220 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-12-08Bibliographically approved

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