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Adaptive Interference Cancellation Using Common-Mode Information in DSL

Magesacher, Thomas LU ; Ödling, Per LU and Börjesson, Per Ola LU (2005) 13th European Signal Processing Conference EUSIPCO, 2005 In Proc. European Signal Processing Conference 2005
Abstract
Exploiting the common-mode (CM) receive signal in wireline communication can yield significant improvements in terms of channel capacity compared to using only the differential-mode (DM) signal. Recently published, independent, scientific work proposed the employment of an adaptive CM-reference based interference canceller

and reported performance improvements based on simulation

results. Adaptive processing of correlated receive signals, however, bears the potential danger of cancelling the useful component—an undesired effect we will address. We present an analysis of the linear adaptive cancellation approach in this application. For a large class of practically relevant cases, it can be shown that a canceller, whose... (More)
Exploiting the common-mode (CM) receive signal in wireline communication can yield significant improvements in terms of channel capacity compared to using only the differential-mode (DM) signal. Recently published, independent, scientific work proposed the employment of an adaptive CM-reference based interference canceller

and reported performance improvements based on simulation

results. Adaptive processing of correlated receive signals, however, bears the potential danger of cancelling the useful component—an undesired effect we will address. We present an analysis of the linear adaptive cancellation approach in this application. For a large class of practically relevant cases, it can be shown that a canceller, whose coefficients are adapted while the far-end transmitter is silent, yields a signal-tonoise-and-interference power ratio (SNIR) which is higher than the SNIR of the DM-only channel output. Moreover, the performance of a canceller with this tap-setting is close to the performance of the front-end that is optimum in the sense of maximising the SNIR at its

output. Adaptation while the useful far-end signal is present yields a front-end whose output SNIR is considerably lower compared to the SNIR of the DM channel output. The results and their practical impact are demonstrated by an example. (Less)
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Proc. European Signal Processing Conference 2005
conference name
13th European Signal Processing Conference EUSIPCO, 2005
external identifiers
  • Scopus:84863702215
language
English
LU publication?
yes
id
def1c024-0cfb-4d2e-a741-fb45cb63aa71 (old id 603369)
date added to LUP
2007-12-04 13:33:20
date last changed
2016-10-13 04:57:07
@misc{def1c024-0cfb-4d2e-a741-fb45cb63aa71,
  abstract     = {Exploiting the common-mode (CM) receive signal in wireline communication can yield significant improvements in terms of channel capacity compared to using only the differential-mode (DM) signal. Recently published, independent, scientific work proposed the employment of an adaptive CM-reference based interference canceller<br/><br>
and reported performance improvements based on simulation<br/><br>
results. Adaptive processing of correlated receive signals, however, bears the potential danger of cancelling the useful component—an undesired effect we will address. We present an analysis of the linear adaptive cancellation approach in this application. For a large class of practically relevant cases, it can be shown that a canceller, whose coefficients are adapted while the far-end transmitter is silent, yields a signal-tonoise-and-interference power ratio (SNIR) which is higher than the SNIR of the DM-only channel output. Moreover, the performance of a canceller with this tap-setting is close to the performance of the front-end that is optimum in the sense of maximising the SNIR at its<br/><br>
output. Adaptation while the useful far-end signal is present yields a front-end whose output SNIR is considerably lower compared to the SNIR of the DM channel output. The results and their practical impact are demonstrated by an example.},
  author       = {Magesacher, Thomas and Ödling, Per and Börjesson, Per Ola},
  language     = {eng},
  series       = {Proc. European Signal Processing Conference 2005},
  title        = {Adaptive Interference Cancellation Using Common-Mode Information in DSL},
  year         = {2005},
}