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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.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
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 (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.
Research subject
Signal Processing; Mathematics
URN: urn:nbn:se:ltu:diva-37563Local ID: ba078420-dfbd-11dc-9e29-000ea68e967bOAI: diva2:1011061
International Conference on Telecommunications : 01/06/1998 - 02/06/1998
Godkänd; 1998; 20080220 (ysko)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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