Optimizing Power Normalization for G.fast Linear Precoder by Linear Programming
(2014) IEEE ICC 2014 - Selected Areas in Communications Symposium p.4060-4065- Abstract
- The use of vectoring for crosstalk cancellation in
the new ITU-T G.fast standard for next generation DSL systems
becomes essential for efficient utilization of the extended
bandwidth (up to 200 MHz). In VDSL2 (up to 30 MHz),
a zero-forcing-based linear precoder is used in downstream
which approaches single-line performance. However, at high
frequencies, the linear precoder may amplify the signal power
substantially since the crosstalk channel is much stronger
than at lower frequencies. Performance could be significantly
degraded by power normalization to keep the PSD below the
mask. In this work, we extended a per-line power normalization
... (More) - The use of vectoring for crosstalk cancellation in
the new ITU-T G.fast standard for next generation DSL systems
becomes essential for efficient utilization of the extended
bandwidth (up to 200 MHz). In VDSL2 (up to 30 MHz),
a zero-forcing-based linear precoder is used in downstream
which approaches single-line performance. However, at high
frequencies, the linear precoder may amplify the signal power
substantially since the crosstalk channel is much stronger
than at lower frequencies. Performance could be significantly
degraded by power normalization to keep the PSD below the
mask. In this work, we extended a per-line power normalization
scheme by linear programming (LP) optimization. By
simulations using measured cable data it is shown how the LPbased
scheme further improves the linear precoder and it is
also capable of balancing the data rate between lines. Further,
the simulations also show the non-linear Tomlinson-Harashima
precoder performs better than the linear precoders. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4450586
- author
- Müller, Francisco ; Lu, Chenguang ; Eriksson, Per-Erik ; Höst, Stefan LU and Klautau, Aldebaro
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 2014 IEEE International Conference on Communications, ICC 2014
- pages
- 4060 - 4065
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE ICC 2014 - Selected Areas in Communications Symposium
- conference location
- Sydney, Australia
- conference dates
- 2014-06-10 - 2014-06-14
- external identifiers
-
- scopus:84907001013
- ISBN
- 9781479920037
- DOI
- 10.1109/ICC.2014.6883973
- language
- English
- LU publication?
- yes
- id
- 8063d8ef-262a-49c5-8880-102012187442 (old id 4450586)
- date added to LUP
- 2016-04-04 13:48:42
- date last changed
- 2022-03-01 00:29:58
@inproceedings{8063d8ef-262a-49c5-8880-102012187442,
abstract = {{The use of vectoring for crosstalk cancellation in<br/><br>
the new ITU-T G.fast standard for next generation DSL systems<br/><br>
becomes essential for efficient utilization of the extended<br/><br>
bandwidth (up to 200 MHz). In VDSL2 (up to 30 MHz),<br/><br>
a zero-forcing-based linear precoder is used in downstream<br/><br>
which approaches single-line performance. However, at high<br/><br>
frequencies, the linear precoder may amplify the signal power<br/><br>
substantially since the crosstalk channel is much stronger<br/><br>
than at lower frequencies. Performance could be significantly<br/><br>
degraded by power normalization to keep the PSD below the<br/><br>
mask. In this work, we extended a per-line power normalization<br/><br>
scheme by linear programming (LP) optimization. By<br/><br>
simulations using measured cable data it is shown how the LPbased<br/><br>
scheme further improves the linear precoder and it is<br/><br>
also capable of balancing the data rate between lines. Further,<br/><br>
the simulations also show the non-linear Tomlinson-Harashima<br/><br>
precoder performs better than the linear precoders.}},
author = {{Müller, Francisco and Lu, Chenguang and Eriksson, Per-Erik and Höst, Stefan and Klautau, Aldebaro}},
booktitle = {{2014 IEEE International Conference on Communications, ICC 2014}},
isbn = {{9781479920037}},
language = {{eng}},
pages = {{4060--4065}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Optimizing Power Normalization for G.fast Linear Precoder by Linear Programming}},
url = {{http://dx.doi.org/10.1109/ICC.2014.6883973}},
doi = {{10.1109/ICC.2014.6883973}},
year = {{2014}},
}