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Digital RFI suppression in DMT-based VDSL systems

Sjoberg, F; Nilsson, R; Börjesson, Per Ola LU ; Ödling, Per LU ; Wiese, B and Bingham, JAC (2004) In IEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications 51(11). p.2300-2312
Abstract
In this paper, we propose a method for suppressing radio frequency interference (RFI) in discrete multitone (DMT) based very high bit rate digital subscriber line (VDSL) systems. The method operates in the frequency domain of a DMT system. First, we derive a model of how an unknown narrow-band RF signal is mapped onto the DMT carriers. Then, by measuring the RFI on a few unused DMT carriers we are able to subtract RFI estimates from every modulated subcarrier. Simulation results show. that this method, applied to an RFI signal with the same average power as the VDSL signal, suppresses the RFI with 40-50 dB, which reduces the average SNR loss from about 20 to less than 0.3 dB.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
subscriber loops, discrete multitone (DMT), radio frequency interference (RFI), very high bit rate digital subscriber line (VDSL)
in
IEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications
volume
51
issue
11
pages
2300 - 2312
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000225080800020
  • scopus:9744273279
ISSN
1057-7122
DOI
10.1109/TCSI.2004.836865
language
English
LU publication?
yes
id
6cd05400-da42-4fec-9953-667073902b77 (old id 260942)
date added to LUP
2007-10-31 16:10:08
date last changed
2017-01-01 07:15:06
@article{6cd05400-da42-4fec-9953-667073902b77,
  abstract     = {In this paper, we propose a method for suppressing radio frequency interference (RFI) in discrete multitone (DMT) based very high bit rate digital subscriber line (VDSL) systems. The method operates in the frequency domain of a DMT system. First, we derive a model of how an unknown narrow-band RF signal is mapped onto the DMT carriers. Then, by measuring the RFI on a few unused DMT carriers we are able to subtract RFI estimates from every modulated subcarrier. Simulation results show. that this method, applied to an RFI signal with the same average power as the VDSL signal, suppresses the RFI with 40-50 dB, which reduces the average SNR loss from about 20 to less than 0.3 dB.},
  author       = {Sjoberg, F and Nilsson, R and Börjesson, Per Ola and Ödling, Per and Wiese, B and Bingham, JAC},
  issn         = {1057-7122},
  keyword      = {subscriber loops,discrete multitone (DMT),radio frequency interference (RFI),very high bit rate digital subscriber line (VDSL)},
  language     = {eng},
  number       = {11},
  pages        = {2300--2312},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications},
  title        = {Digital RFI suppression in DMT-based VDSL systems},
  url          = {http://dx.doi.org/10.1109/TCSI.2004.836865},
  volume       = {51},
  year         = {2004},
}