Fast Mitigation of Sudden Termination Changes in Wideband Wireline Systems
(2016) In IEEE Transactions on Communications 64(6). p.2610-2621- Abstract
- Vectoring enables cooperative crosstalk mitigation in wideband wireline systems. A sudden termination change within a vectored group alters the entire perceived channel matrix and thus disturbs the vectoring operation since the precoder, which is tuned to the channel before the change, is no longer up to date. We analyze the resulting residual crosstalk and its impact on performance degradation during showtime for both linear and non-linear precoding systems. To cover, a new channel matrix must be estimated to update the precoder accordingly. We use a model-based approach to track a vector instead of estimating the full matrix. Based on this vector, simplified precoder updating methods for both precoding systems are presented accounting... (More)
- Vectoring enables cooperative crosstalk mitigation in wideband wireline systems. A sudden termination change within a vectored group alters the entire perceived channel matrix and thus disturbs the vectoring operation since the precoder, which is tuned to the channel before the change, is no longer up to date. We analyze the resulting residual crosstalk and its impact on performance degradation during showtime for both linear and non-linear precoding systems. To cover, a new channel matrix must be estimated to update the precoder accordingly. We use a model-based approach to track a vector instead of estimating the full matrix. Based on this vector, simplified precoder updating methods for both precoding systems are presented accounting for a sudden line deactivation or (re)activation in a vectored group. As an alternative to the state-of-the-art methods, the proposed procedures significantly reduce the complexity of both channel estimation and precoder updating and minimize the disturbed period for active users. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/a872c202-79d1-4f39-9bd9-5caf40927fa1
- author
- Huang, Yezi LU ; Magesacher, Thomas LU ; Lu, Chenguang and Ödling, Per LU
- organization
- publishing date
- 2016-05-02
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Communications
- volume
- 64
- issue
- 6
- pages
- 12 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:84976482723
- wos:000384303400027
- ISSN
- 0090-6778
- DOI
- 10.1109/TCOMM.2016.2561292
- language
- English
- LU publication?
- yes
- id
- a872c202-79d1-4f39-9bd9-5caf40927fa1
- date added to LUP
- 2016-05-31 13:10:10
- date last changed
- 2022-01-30 03:48:34
@article{a872c202-79d1-4f39-9bd9-5caf40927fa1,
abstract = {{Vectoring enables cooperative crosstalk mitigation in wideband wireline systems. A sudden termination change within a vectored group alters the entire perceived channel matrix and thus disturbs the vectoring operation since the precoder, which is tuned to the channel before the change, is no longer up to date. We analyze the resulting residual crosstalk and its impact on performance degradation during showtime for both linear and non-linear precoding systems. To cover, a new channel matrix must be estimated to update the precoder accordingly. We use a model-based approach to track a vector instead of estimating the full matrix. Based on this vector, simplified precoder updating methods for both precoding systems are presented accounting for a sudden line deactivation or (re)activation in a vectored group. As an alternative to the state-of-the-art methods, the proposed procedures significantly reduce the complexity of both channel estimation and precoder updating and minimize the disturbed period for active users.}},
author = {{Huang, Yezi and Magesacher, Thomas and Lu, Chenguang and Ödling, Per}},
issn = {{0090-6778}},
language = {{eng}},
month = {{05}},
number = {{6}},
pages = {{2610--2621}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Transactions on Communications}},
title = {{Fast Mitigation of Sudden Termination Changes in Wideband Wireline Systems}},
url = {{http://dx.doi.org/10.1109/TCOMM.2016.2561292}},
doi = {{10.1109/TCOMM.2016.2561292}},
volume = {{64}},
year = {{2016}},
}