Coefficients--Delay Simultaneous Adaptation Scheme for Linear Equalization of Nonminimum Phase Channels

Yusuke TSUDA; Jonah GAMBA; Tetsuya SHIMAMURA

doi:10.1093/ietfec/e89-a.1.248

Coefficients--Delay Simultaneous Adaptation Scheme for Linear Equalization of Nonminimum Phase Channels

Yusuke TSUDA, Jonah GAMBA, Tetsuya SHIMAMURA

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An efficient adaptation technique of the delay is introduced for accomplishing more accurate adaptive linear equalization of nonminimum phase channels. It is focused that the filter structure and adaptation procedure of the adaptive Butler-Cantoni (ABC) equalizer is very suitable to deal with a variable delay for each iteration, compared with a classical adaptive linear transversal equalizer (LTE). We derive a cost function by comparing the system mismatch of an optimum equalizer coefficient vector with an equalizer coefficient vector with several delay settings. The cost function is square of difference of absolute values of the first element and the last element for the equalizer coefficient vector. The delay adaptation method based on the cost function is developed, which is involved with the ABC equalizer. The delay is adapted by checking the first and last elements of the equalizer coefficient vector and this results in an LTE providing a lower mean square error level than the other LTEs with the same order. We confirm the performance of the ABC equalizer with the delay adaptation method through computer simulations.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.1 pp.248-259

Publication Date: 2006/01/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e89-a.1.248

Type of Manuscript: PAPER

Category: Digital Signal Processing

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Yusuke TSUDA, Jonah GAMBA, Tetsuya SHIMAMURA, "Coefficients--Delay Simultaneous Adaptation Scheme for Linear Equalization of Nonminimum Phase Channels" in IEICE TRANSACTIONS on Fundamentals, vol. E89-A, no. 1, pp. 248-259, January 2006, doi: 10.1093/ietfec/e89-a.1.248.
Abstract: An efficient adaptation technique of the delay is introduced for accomplishing more accurate adaptive linear equalization of nonminimum phase channels. It is focused that the filter structure and adaptation procedure of the adaptive Butler-Cantoni (ABC) equalizer is very suitable to deal with a variable delay for each iteration, compared with a classical adaptive linear transversal equalizer (LTE). We derive a cost function by comparing the system mismatch of an optimum equalizer coefficient vector with an equalizer coefficient vector with several delay settings. The cost function is square of difference of absolute values of the first element and the last element for the equalizer coefficient vector. The delay adaptation method based on the cost function is developed, which is involved with the ABC equalizer. The delay is adapted by checking the first and last elements of the equalizer coefficient vector and this results in an LTE providing a lower mean square error level than the other LTEs with the same order. We confirm the performance of the ABC equalizer with the delay adaptation method through computer simulations.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.1.248/_p

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@ARTICLE{e89-a_1_248,
author={Yusuke TSUDA, Jonah GAMBA, Tetsuya SHIMAMURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Coefficients--Delay Simultaneous Adaptation Scheme for Linear Equalization of Nonminimum Phase Channels},
year={2006},
volume={E89-A},
number={1},
pages={248-259},
abstract={An efficient adaptation technique of the delay is introduced for accomplishing more accurate adaptive linear equalization of nonminimum phase channels. It is focused that the filter structure and adaptation procedure of the adaptive Butler-Cantoni (ABC) equalizer is very suitable to deal with a variable delay for each iteration, compared with a classical adaptive linear transversal equalizer (LTE). We derive a cost function by comparing the system mismatch of an optimum equalizer coefficient vector with an equalizer coefficient vector with several delay settings. The cost function is square of difference of absolute values of the first element and the last element for the equalizer coefficient vector. The delay adaptation method based on the cost function is developed, which is involved with the ABC equalizer. The delay is adapted by checking the first and last elements of the equalizer coefficient vector and this results in an LTE providing a lower mean square error level than the other LTEs with the same order. We confirm the performance of the ABC equalizer with the delay adaptation method through computer simulations.},
keywords={},
doi={10.1093/ietfec/e89-a.1.248},
ISSN={1745-1337},
month={January},}

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TY - JOUR
TI - Coefficients--Delay Simultaneous Adaptation Scheme for Linear Equalization of Nonminimum Phase Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 248
EP - 259
AU - Yusuke TSUDA
AU - Jonah GAMBA
AU - Tetsuya SHIMAMURA
PY - 2006
DO - 10.1093/ietfec/e89-a.1.248
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 1
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - January 2006
AB - An efficient adaptation technique of the delay is introduced for accomplishing more accurate adaptive linear equalization of nonminimum phase channels. It is focused that the filter structure and adaptation procedure of the adaptive Butler-Cantoni (ABC) equalizer is very suitable to deal with a variable delay for each iteration, compared with a classical adaptive linear transversal equalizer (LTE). We derive a cost function by comparing the system mismatch of an optimum equalizer coefficient vector with an equalizer coefficient vector with several delay settings. The cost function is square of difference of absolute values of the first element and the last element for the equalizer coefficient vector. The delay adaptation method based on the cost function is developed, which is involved with the ABC equalizer. The delay is adapted by checking the first and last elements of the equalizer coefficient vector and this results in an LTE providing a lower mean square error level than the other LTEs with the same order. We confirm the performance of the ABC equalizer with the delay adaptation method through computer simulations.
ER -