Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination

Junyi Xi; Shefeng Yan; Lijun Xu; Jing Tian

doi:10.1109/ChinaSIP.2015.7230544

Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination

Junyi Xi, Shefeng Yan^*, Lijun Xu, Jing Tian

^*Corresponding author for this work

Chinese Academy of Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

The bidirectional fractionally-spaced decision feedback equalizer (DFE) based on the soft outputs combination is proposed. Without any channel estimation, the fractionally-spaced DFE effectively compensates for any phase distortion and suppresses the error propagation. Compared to conventional methods, the soft outputs combining scheme involving the log likelihood ratios (LLRs) of two DFEs outputs running in opposite directions achieves much better performance in diversity gain. The simulation results demonstrate that the proposed method outperforms the conventional bidirectional DFE by 2∼4 dB over Proakis B channel.

Original language	English
Title of host publication	2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	948-952
Number of pages	5
ISBN (Electronic)	9781479919482
DOIs	https://doi.org/10.1109/ChinaSIP.2015.7230544
Publication status	Published - 31 Aug 2015
Externally published	Yes
Event	IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Chengdu, China Duration: 12 Jul 2015 → 15 Jul 2015

Publication series

Name	2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings

Conference

Conference	IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015
Country/Territory	China
City	Chengdu
Period	12/07/15 → 15/07/15

Keywords

Bidirectional operation
decision feedback equalizer
fractionally-spaced
soft outputs combination
underwater acoustic communications

Access to Document

10.1109/ChinaSIP.2015.7230544

Cite this

Xi, J., Yan, S., Xu, L., & Tian, J. (2015). Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination. In 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings (pp. 948-952). Article 7230544 (2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ChinaSIP.2015.7230544

Xi, Junyi ; Yan, Shefeng ; Xu, Lijun et al. / Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination. 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 948-952 (2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings).

@inproceedings{29f280cd495544a3889905fe36802712,

title = "Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination",

abstract = "The bidirectional fractionally-spaced decision feedback equalizer (DFE) based on the soft outputs combination is proposed. Without any channel estimation, the fractionally-spaced DFE effectively compensates for any phase distortion and suppresses the error propagation. Compared to conventional methods, the soft outputs combining scheme involving the log likelihood ratios (LLRs) of two DFEs outputs running in opposite directions achieves much better performance in diversity gain. The simulation results demonstrate that the proposed method outperforms the conventional bidirectional DFE by 2∼4 dB over Proakis B channel.",

keywords = "Bidirectional operation, decision feedback equalizer, fractionally-spaced, soft outputs combination, underwater acoustic communications",

author = "Junyi Xi and Shefeng Yan and Lijun Xu and Jing Tian",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 ; Conference date: 12-07-2015 Through 15-07-2015",

year = "2015",

month = aug,

day = "31",

doi = "10.1109/ChinaSIP.2015.7230544",

language = "English",

series = "2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "948--952",

booktitle = "2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings",

address = "United States",

}

Xi, J, Yan, S , Xu, L & Tian, J 2015, Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination. in 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings., 7230544, 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 948-952, IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015, Chengdu, China, 12/07/15. https://doi.org/10.1109/ChinaSIP.2015.7230544

Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination. / Xi, Junyi; Yan, Shefeng ; Xu, Lijun et al.
2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2015. p. 948-952 7230544 (2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination

AU - Xi, Junyi

AU - Yan, Shefeng

AU - Xu, Lijun

AU - Tian, Jing

PY - 2015/8/31

Y1 - 2015/8/31

N2 - The bidirectional fractionally-spaced decision feedback equalizer (DFE) based on the soft outputs combination is proposed. Without any channel estimation, the fractionally-spaced DFE effectively compensates for any phase distortion and suppresses the error propagation. Compared to conventional methods, the soft outputs combining scheme involving the log likelihood ratios (LLRs) of two DFEs outputs running in opposite directions achieves much better performance in diversity gain. The simulation results demonstrate that the proposed method outperforms the conventional bidirectional DFE by 2∼4 dB over Proakis B channel.

AB - The bidirectional fractionally-spaced decision feedback equalizer (DFE) based on the soft outputs combination is proposed. Without any channel estimation, the fractionally-spaced DFE effectively compensates for any phase distortion and suppresses the error propagation. Compared to conventional methods, the soft outputs combining scheme involving the log likelihood ratios (LLRs) of two DFEs outputs running in opposite directions achieves much better performance in diversity gain. The simulation results demonstrate that the proposed method outperforms the conventional bidirectional DFE by 2∼4 dB over Proakis B channel.

KW - Bidirectional operation

KW - decision feedback equalizer

KW - fractionally-spaced

KW - soft outputs combination

KW - underwater acoustic communications

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U2 - 10.1109/ChinaSIP.2015.7230544

DO - 10.1109/ChinaSIP.2015.7230544

M3 - Conference contribution

AN - SCOPUS:84957607607

T3 - 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings

SP - 948

EP - 952

BT - 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015

Y2 - 12 July 2015 through 15 July 2015

ER -

Xi J, Yan S , Xu L, Tian J. Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination. In 2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2015. p. 948-952. 7230544. (2015 IEEE China Summit and International Conference on Signal and Information Processing, ChinaSIP 2015 - Proceedings). doi: 10.1109/ChinaSIP.2015.7230544

Bidirectional fractionally-spaced decision feedback equalizer based on soft outputs combination

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