Digital RFI suppression in DMT-based VDSL systems
(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:
https://lup.lub.lu.se/record/260942
- author
- Sjoberg, F ; Nilsson, R ; Börjesson, Per Ola LU ; Ödling, Per LU ; Wiese, B and Bingham, JAC
- organization
- publishing date
- 2004
- 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
- 2016-04-01 16:47:00
- date last changed
- 2022-03-22 21:03:10
@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}}, keywords = {{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}}, doi = {{10.1109/TCSI.2004.836865}}, volume = {{51}}, year = {{2004}}, }