Hybrid Message Passing Detection for OTFS Modulation

Xiang LI; Weijie YUAN; Zhongjie LI

doi:10.1109/WCNC55385.2023.10118784

Hybrid Message Passing Detection for OTFS Modulation

Xiang LI^*, Weijie YUAN, Zhongjie LI

^*Corresponding author for this work

Research output: Book Chapters | Papers in Conference Proceedings › Conference paper (refereed) › Research › peer-review

5 Citations (Scopus)

Abstract

Orthogonal time frequency space (OTFS) modulation which multiplexes data symbols in the delay Doppler (DD) domain has been proved to be an effective scheme for high-mobility scenarios. To realize the full time and frequency diversity promised, some promising detectors have been developed. The existence of fractional Doppler imposes new challenges to the performance and complexity of the detector. In this paper, we proposed a hybrid message passing detector for OTFS in the presence of the fractional OTFS. Based on the system model, we derive the probabilistic model of OTFS detector and represent it by a factor graph. For one Doppler index, we choose the path with the highest gain which is referred to as the main path. Then, a hybrid message passing (MP) scheme is developed, where we apply the non-approximate MP algorithm for the main paths while the Gaussian approximation-based MP algorithm is executed for the remaining paths.

Original language	English
Title of host publication	2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 : Proceedings
Publisher	IEEE
ISBN (Electronic)	9781665491228
DOIs	https://doi.org/10.1109/WCNC55385.2023.10118784
Publication status	Published - 2023
Externally published	Yes
Event	2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 - Glasgow, United Kingdom Duration: 26 Mar 2023 → 29 Mar 2023

Publication series

Name	IEEE Wireless Communications and Networking Conference, WCNC
Volume	2023-March
ISSN (Print)	1525-3511

Conference

Conference	2023 IEEE Wireless Communications and Networking Conference, WCNC 2023
Country/Territory	United Kingdom
City	Glasgow
Period	26/03/23 → 29/03/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Funding

This work is supported in part by National Natural Science Foundation of China under Grant 62101232, in part by Guangdong Provincial Natural Science Foundation under Grant 2022A1515011257, and in part by Shenzhen Science and Technology Program under Grant JCYJ20220530114412029.

Keywords

detector
fractional Doppler
message passing
orthogonal time frequency space (OTFS)

Access to Document

10.1109/WCNC55385.2023.10118784

Cite this

@inproceedings{25e2f6e8fbe44c27bcf0e4a80a4c7187,

title = "Hybrid Message Passing Detection for OTFS Modulation",

abstract = "Orthogonal time frequency space (OTFS) modulation which multiplexes data symbols in the delay Doppler (DD) domain has been proved to be an effective scheme for high-mobility scenarios. To realize the full time and frequency diversity promised, some promising detectors have been developed. The existence of fractional Doppler imposes new challenges to the performance and complexity of the detector. In this paper, we proposed a hybrid message passing detector for OTFS in the presence of the fractional OTFS. Based on the system model, we derive the probabilistic model of OTFS detector and represent it by a factor graph. For one Doppler index, we choose the path with the highest gain which is referred to as the main path. Then, a hybrid message passing (MP) scheme is developed, where we apply the non-approximate MP algorithm for the main paths while the Gaussian approximation-based MP algorithm is executed for the remaining paths.",

keywords = "detector, fractional Doppler, message passing, orthogonal time frequency space (OTFS)",

author = "Xiang LI and Weijie YUAN and Zhongjie LI",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 ; Conference date: 26-03-2023 Through 29-03-2023",

year = "2023",

doi = "10.1109/WCNC55385.2023.10118784",

language = "English",

series = "IEEE Wireless Communications and Networking Conference, WCNC",

publisher = "IEEE",

booktitle = "2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 : Proceedings",

}

LI, X, YUAN, W & LI, Z 2023, Hybrid Message Passing Detection for OTFS Modulation. in 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 : Proceedings. IEEE Wireless Communications and Networking Conference, WCNC, vol. 2023-March, IEEE, 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023, Glasgow, United Kingdom, 26/03/23. https://doi.org/10.1109/WCNC55385.2023.10118784

Hybrid Message Passing Detection for OTFS Modulation. / LI, Xiang; YUAN, Weijie; LI, Zhongjie.
2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 : Proceedings. IEEE, 2023. (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2023-March).

Research output: Book Chapters | Papers in Conference Proceedings › Conference paper (refereed) › Research › peer-review

TY - GEN

T1 - Hybrid Message Passing Detection for OTFS Modulation

AU - LI, Xiang

AU - YUAN, Weijie

AU - LI, Zhongjie

PY - 2023

Y1 - 2023

N2 - Orthogonal time frequency space (OTFS) modulation which multiplexes data symbols in the delay Doppler (DD) domain has been proved to be an effective scheme for high-mobility scenarios. To realize the full time and frequency diversity promised, some promising detectors have been developed. The existence of fractional Doppler imposes new challenges to the performance and complexity of the detector. In this paper, we proposed a hybrid message passing detector for OTFS in the presence of the fractional OTFS. Based on the system model, we derive the probabilistic model of OTFS detector and represent it by a factor graph. For one Doppler index, we choose the path with the highest gain which is referred to as the main path. Then, a hybrid message passing (MP) scheme is developed, where we apply the non-approximate MP algorithm for the main paths while the Gaussian approximation-based MP algorithm is executed for the remaining paths.

AB - Orthogonal time frequency space (OTFS) modulation which multiplexes data symbols in the delay Doppler (DD) domain has been proved to be an effective scheme for high-mobility scenarios. To realize the full time and frequency diversity promised, some promising detectors have been developed. The existence of fractional Doppler imposes new challenges to the performance and complexity of the detector. In this paper, we proposed a hybrid message passing detector for OTFS in the presence of the fractional OTFS. Based on the system model, we derive the probabilistic model of OTFS detector and represent it by a factor graph. For one Doppler index, we choose the path with the highest gain which is referred to as the main path. Then, a hybrid message passing (MP) scheme is developed, where we apply the non-approximate MP algorithm for the main paths while the Gaussian approximation-based MP algorithm is executed for the remaining paths.

KW - detector

KW - fractional Doppler

KW - message passing

KW - orthogonal time frequency space (OTFS)

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U2 - 10.1109/WCNC55385.2023.10118784

DO - 10.1109/WCNC55385.2023.10118784

M3 - Conference paper (refereed)

AN - SCOPUS:85159783475

T3 - IEEE Wireless Communications and Networking Conference, WCNC

BT - 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023 : Proceedings

PB - IEEE

T2 - 2023 IEEE Wireless Communications and Networking Conference, WCNC 2023

Y2 - 26 March 2023 through 29 March 2023

ER -

Hybrid Message Passing Detection for OTFS Modulation

Abstract

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Keywords

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