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Impact of crosstalk channel estimation on the DSM performance for DSL networks

Lindqvist, Neiva LU ; Lindqvist, Fredrik LU ; Monteiro, Marcio; Dortschy, Boris; Pelaes, Evaldo and Klautau, Aldebaro (2010) In Eurasip Journal on Advances in Signal Processing
Abstract
The development and assessment of spectrum management methods for the copper access network are usually conducted under the assumption of accurate channel information. Acquiring such information implies, in practice, estimation of the crosstalk coupling functions between the twisted-pair lines in the access network. This type of estimation is not supported or required by current digital subscriber line (DSL) standards. In this work, we investigate the impact of the inaccuracies in crosstalk estimation on the performance of dynamic spectrum management (DSM) algorithms. A recently proposed crosstalk channel estimator is considered and a statistical sensitivity analysis is conducted to investigate the effects of the crosstalk estimation error... (More)
The development and assessment of spectrum management methods for the copper access network are usually conducted under the assumption of accurate channel information. Acquiring such information implies, in practice, estimation of the crosstalk coupling functions between the twisted-pair lines in the access network. This type of estimation is not supported or required by current digital subscriber line (DSL) standards. In this work, we investigate the impact of the inaccuracies in crosstalk estimation on the performance of dynamic spectrum management (DSM) algorithms. A recently proposed crosstalk channel estimator is considered and a statistical sensitivity analysis is conducted to investigate the effects of the crosstalk estimation error on the bitloading and on the achievable data rate for a transmission line. The DSM performance is then evaluated based on the achievable data rates obtained through experiments with DSL setups and computer simulations. Since these experiments assume network scenarios consisting of real twisted-pair cables, both crosstalk channel estimates and measurements (for a reference comparison) are considered. The results indicate that the error introduced by the adopted estimation procedure does not compromise the performance of the DSM techniques, that is, the considered crosstalk channel estimator provides enough means for a practical implementation of DSM. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Eurasip Journal on Advances in Signal Processing
publisher
Hindawi Publishing Corporation
external identifiers
  • wos:000277684100001
  • scopus:77951576365
ISSN
1687-6172
DOI
10.1155/2010/935076
language
English
LU publication?
yes
id
d5f8a40a-38f3-4450-8037-7fd41e1009d2 (old id 1617910)
date added to LUP
2010-06-21 16:21:56
date last changed
2018-05-29 11:02:24
@article{d5f8a40a-38f3-4450-8037-7fd41e1009d2,
  abstract     = {The development and assessment of spectrum management methods for the copper access network are usually conducted under the assumption of accurate channel information. Acquiring such information implies, in practice, estimation of the crosstalk coupling functions between the twisted-pair lines in the access network. This type of estimation is not supported or required by current digital subscriber line (DSL) standards. In this work, we investigate the impact of the inaccuracies in crosstalk estimation on the performance of dynamic spectrum management (DSM) algorithms. A recently proposed crosstalk channel estimator is considered and a statistical sensitivity analysis is conducted to investigate the effects of the crosstalk estimation error on the bitloading and on the achievable data rate for a transmission line. The DSM performance is then evaluated based on the achievable data rates obtained through experiments with DSL setups and computer simulations. Since these experiments assume network scenarios consisting of real twisted-pair cables, both crosstalk channel estimates and measurements (for a reference comparison) are considered. The results indicate that the error introduced by the adopted estimation procedure does not compromise the performance of the DSM techniques, that is, the considered crosstalk channel estimator provides enough means for a practical implementation of DSM.},
  articleno    = {935076},
  author       = {Lindqvist, Neiva and Lindqvist, Fredrik and Monteiro, Marcio and Dortschy, Boris and Pelaes, Evaldo and Klautau, Aldebaro},
  issn         = {1687-6172},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Eurasip Journal on Advances in Signal Processing},
  title        = {Impact of crosstalk channel estimation on the DSM performance for DSL networks},
  url          = {http://dx.doi.org/10.1155/2010/935076},
  year         = {2010},
}