Digital RFI suppression in DMT-based VDSL systems
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)
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
IdentifiersURN: urn:nbn:se:ltu:diva-37563Local ID: ba078420-dfbd-11dc-9e29-000ea68e967bOAI: oai:DiVA.org:ltu-37563DiVA: diva2:1011061
International Conference on Telecommunications : 01/06/1998 - 02/06/1998
Godkänd; 1998; 20080220 (ysko)2016-10-032016-10-03Bibliographically approved