On the spectral efficiency of MMSE-based MIMO OTFS systems

Ruoxi Chong; Mohammadali Mohammadi; Hien Quoc Ngo; Simon L. Cotton; Michail Matthaiou

doi:10.1109/ISWCS56560.2022.9940403

On the spectral efficiency of MMSE-based MIMO OTFS systems

Ruoxi Chong^*, Mohammadali Mohammadi, Hien Quoc Ngo, Simon L. Cotton, Michail Matthaiou

^*Corresponding author for this work

School of Electronics, Electrical Engineering and Computer Science

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

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Abstract

We investigate the spectral efficiency (SE) of an uplink multi-user multiple-input multiple-output (MIMO) system with orthogonal time frequency space (OTFS) modulation. Two multiple access schemes are considered hereafter, namely, delay division multiple access (DDMA) and Doppler division multiple access (DoDMA). To avoid multi-user interference (MUI), we separate the delay Doppler (DD) domain resource blocks assigned to different users by guard bands. We design a minimum-meansquare-error (MMSE) receiver to combine the received signals for the detection of different users. We analyze the SE for the considered MIMO-OTFS system and quantify the performance gains achieved over a MIMO system with orthogonal frequency-division multiple access (OFDMA). Our simulation results demonstrate a noticeable improvement in the performance of MIMO-OTFS over MIMO-OFDMA.

Original language	English
Title of host publication	ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	6
ISBN (Electronic)	9781665455442
ISBN (Print)	9781665455459
DOIs	https://doi.org/10.1109/ISWCS56560.2022.9940403
Publication status	Published - 16 Nov 2022
Event	18th International Symposium on Wireless Communication Systems - Hangzou, China Duration: 19 Oct 2022 → 22 Oct 2022 http://iswcs.org/iswcs2022/index.html

Publication series

Name	International Symposium on Wireless Communication Systems (ISWCS)
Publisher	IEEE
ISSN (Electronic)	2154-0225

Conference

Conference	18th International Symposium on Wireless Communication Systems
Abbreviated title	ISWCS 2022
Country/Territory	China
City	Hangzou
Period	19/10/2022 → 22/10/2022
Internet address	http://iswcs.org/iswcs2022/index.html

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On the spectral efficiency of MMSE-based MIMO OTFS systems
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Chong, R., Mohammadi, M., Ngo, H. Q., Cotton, S. L., & Matthaiou, M. (2022). On the spectral efficiency of MMSE-based MIMO OTFS systems. In ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings (International Symposium on Wireless Communication Systems (ISWCS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISWCS56560.2022.9940403

Chong, Ruoxi ; Mohammadi, Mohammadali ; Ngo, Hien Quoc ; Cotton, Simon L. ; Matthaiou, Michail. / On the spectral efficiency of MMSE-based MIMO OTFS systems. ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. (International Symposium on Wireless Communication Systems (ISWCS)).

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title = "On the spectral efficiency of MMSE-based MIMO OTFS systems",

abstract = "We investigate the spectral efficiency (SE) of an uplink multi-user multiple-input multiple-output (MIMO) system with orthogonal time frequency space (OTFS) modulation. Two multiple access schemes are considered hereafter, namely, delay division multiple access (DDMA) and Doppler division multiple access (DoDMA). To avoid multi-user interference (MUI), we separate the delay Doppler (DD) domain resource blocks assigned to different users by guard bands. We design a minimum-meansquare-error (MMSE) receiver to combine the received signals for the detection of different users. We analyze the SE for the considered MIMO-OTFS system and quantify the performance gains achieved over a MIMO system with orthogonal frequency-division multiple access (OFDMA). Our simulation results demonstrate a noticeable improvement in the performance of MIMO-OTFS over MIMO-OFDMA.",

author = "Ruoxi Chong and Mohammadali Mohammadi and Ngo, {Hien Quoc} and Cotton, {Simon L.} and Michail Matthaiou",

year = "2022",

month = nov,

day = "16",

doi = "10.1109/ISWCS56560.2022.9940403",

language = "English",

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series = "International Symposium on Wireless Communication Systems (ISWCS)",

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

booktitle = "ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings",

note = "18th International Symposium on Wireless Communication Systems, ISWCS 2022 ; Conference date: 19-10-2022 Through 22-10-2022",

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Chong, R , Mohammadi, M , Ngo, HQ , Cotton, SL & Matthaiou, M 2022, On the spectral efficiency of MMSE-based MIMO OTFS systems. in ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings. International Symposium on Wireless Communication Systems (ISWCS), Institute of Electrical and Electronics Engineers Inc., 18th International Symposium on Wireless Communication Systems, Hangzou, China, 19/10/2022. https://doi.org/10.1109/ISWCS56560.2022.9940403

On the spectral efficiency of MMSE-based MIMO OTFS systems. / Chong, Ruoxi ; Mohammadi, Mohammadali ; Ngo, Hien Quoc ; Cotton, Simon L.; Matthaiou, Michail.

ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. (International Symposium on Wireless Communication Systems (ISWCS)).

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

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T1 - On the spectral efficiency of MMSE-based MIMO OTFS systems

AU - Chong, Ruoxi

AU - Mohammadi, Mohammadali

AU - Ngo, Hien Quoc

AU - Cotton, Simon L.

AU - Matthaiou, Michail

PY - 2022/11/16

Y1 - 2022/11/16

N2 - We investigate the spectral efficiency (SE) of an uplink multi-user multiple-input multiple-output (MIMO) system with orthogonal time frequency space (OTFS) modulation. Two multiple access schemes are considered hereafter, namely, delay division multiple access (DDMA) and Doppler division multiple access (DoDMA). To avoid multi-user interference (MUI), we separate the delay Doppler (DD) domain resource blocks assigned to different users by guard bands. We design a minimum-meansquare-error (MMSE) receiver to combine the received signals for the detection of different users. We analyze the SE for the considered MIMO-OTFS system and quantify the performance gains achieved over a MIMO system with orthogonal frequency-division multiple access (OFDMA). Our simulation results demonstrate a noticeable improvement in the performance of MIMO-OTFS over MIMO-OFDMA.

AB - We investigate the spectral efficiency (SE) of an uplink multi-user multiple-input multiple-output (MIMO) system with orthogonal time frequency space (OTFS) modulation. Two multiple access schemes are considered hereafter, namely, delay division multiple access (DDMA) and Doppler division multiple access (DoDMA). To avoid multi-user interference (MUI), we separate the delay Doppler (DD) domain resource blocks assigned to different users by guard bands. We design a minimum-meansquare-error (MMSE) receiver to combine the received signals for the detection of different users. We analyze the SE for the considered MIMO-OTFS system and quantify the performance gains achieved over a MIMO system with orthogonal frequency-division multiple access (OFDMA). Our simulation results demonstrate a noticeable improvement in the performance of MIMO-OTFS over MIMO-OFDMA.

U2 - 10.1109/ISWCS56560.2022.9940403

DO - 10.1109/ISWCS56560.2022.9940403

M3 - Conference contribution

SN - 9781665455459

T3 - International Symposium on Wireless Communication Systems (ISWCS)

BT - ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 18th International Symposium on Wireless Communication Systems

Y2 - 19 October 2022 through 22 October 2022

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Chong R , Mohammadi M , Ngo HQ , Cotton SL , Matthaiou M. On the spectral efficiency of MMSE-based MIMO OTFS systems. In ISWCS - 18th International Symposium on Wireless Communication Systems: Proceedings. Institute of Electrical and Electronics Engineers Inc. 2022. (International Symposium on Wireless Communication Systems (ISWCS)). https://doi.org/10.1109/ISWCS56560.2022.9940403

On the spectral efficiency of MMSE-based MIMO OTFS systems

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