Orthogonal time sequency multiplexing modulation

Tharaj Thaj; Emanuele Viterbo

doi:10.1109/WCNC49053.2021.9417451

Orthogonal time sequency multiplexing modulation

Tharaj Thaj, Emanuele Viterbo

Electrical and Computer Systems Engineering

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

48 Citations (Scopus)

Abstract

This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme based on the well known Walsh-Hadamard transform (WHT) combined with row-column interleaving, and zero padding (ZP) between blocks in the time-domain. The information symbols in OTSM are multiplexed in the delay and sequency domain using a cascade of time-division and Walsh-Hadamard (sequency) multiplexing. By using the WHT for transmission and reception, the modulation and demodulation steps do not require any complex multiplications. We then propose two low-complexity detectors: (i) a simpler non-iterative detector based on a single tap minimum mean square time-frequency domain equalizer and (ii) an iterative time-domain detector. We demonstrate, via numerical simulations, that the proposed modulation scheme offers high performance gains over orthogonal frequency division multiplexing (OFDM) and exhibits the same performance of orthogonal time frequency space (OTFS) modulation, but with lower complexity. In proposing OTSM, along with simple detection schemes, we offer the lowest complexity solution to achieving reliable communication in high mobility wireless channels, as compared to the available schemes published so far in the literature.

Original language	English
Title of host publication	2021 IEEE Wireless Communications and Networking Conference (WCNC)
Editors	Mutlu Koca
Place of Publication	Piscataway NJ USA
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Number of pages	7
ISBN (Electronic)	9781728195056
ISBN (Print)	9781728195063
DOIs	https://doi.org/10.1109/WCNC49053.2021.9417451
Publication status	Published - 2021
Event	IEEE Wireless Communications and Networking Conference 2021 - Online, Nanjing, China Duration: 29 Mar 2021 → 1 Apr 2021 https://ieeexplore.ieee.org/xpl/conhome/9417241/proceeding (Proceedings) https://wcnc2021.ieee-wcnc.org/ (Website)

Publication series

Name	IEEE Wireless Communications and Networking Conference, WCNC
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Volume	2021-March
ISSN (Print)	1525-3511
ISSN (Electronic)	1558-2612

Conference

Conference	IEEE Wireless Communications and Networking Conference 2021
Abbreviated title	WCNC 2021
Country/Territory	China
City	Nanjing
Period	29/03/21 → 1/04/21
Internet address	https://ieeexplore.ieee.org/xpl/conhome/9417241/proceeding (Proceedings) https://wcnc2021.ieee-wcnc.org/ (Website)

Keywords

Delay–Doppler Channel
Delay–Sequency
Detector
Gauss Seidel
Matched Filtering
Orthogonal Time Sequency Multiplexing
OTFS
OTSM
Walsh Hadamard Transform

Access to Document

10.1109/WCNC49053.2021.9417451

Cite this

@inproceedings{54a679f871514395a3e0653f01a1d570,

title = "Orthogonal time sequency multiplexing modulation",

abstract = "This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme based on the well known Walsh-Hadamard transform (WHT) combined with row-column interleaving, and zero padding (ZP) between blocks in the time-domain. The information symbols in OTSM are multiplexed in the delay and sequency domain using a cascade of time-division and Walsh-Hadamard (sequency) multiplexing. By using the WHT for transmission and reception, the modulation and demodulation steps do not require any complex multiplications. We then propose two low-complexity detectors: (i) a simpler non-iterative detector based on a single tap minimum mean square time-frequency domain equalizer and (ii) an iterative time-domain detector. We demonstrate, via numerical simulations, that the proposed modulation scheme offers high performance gains over orthogonal frequency division multiplexing (OFDM) and exhibits the same performance of orthogonal time frequency space (OTFS) modulation, but with lower complexity. In proposing OTSM, along with simple detection schemes, we offer the lowest complexity solution to achieving reliable communication in high mobility wireless channels, as compared to the available schemes published so far in the literature.",

keywords = "Delay–Doppler Channel, Delay–Sequency, Detector, Gauss Seidel, Matched Filtering, Orthogonal Time Sequency Multiplexing, OTFS, OTSM, Walsh Hadamard Transform",

author = "Tharaj Thaj and Emanuele Viterbo",

note = "Funding Information: This work was supported by the Australian Research Council through the Discovery Project under Grant DP200100096. Publisher Copyright: {\textcopyright}2021 IEEE.; IEEE Wireless Communications and Networking Conference 2021, WCNC 2021 ; Conference date: 29-03-2021 Through 01-04-2021",

year = "2021",

doi = "10.1109/WCNC49053.2021.9417451",

language = "English",

isbn = "9781728195063",

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

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

editor = "Mutlu Koca",

booktitle = "2021 IEEE Wireless Communications and Networking Conference (WCNC)",

address = "United States of America",

url = "https://ieeexplore.ieee.org/xpl/conhome/9417241/proceeding, https://wcnc2021.ieee-wcnc.org/",

}

Thaj, T & Viterbo, E 2021, Orthogonal time sequency multiplexing modulation. in M Koca (ed.), 2021 IEEE Wireless Communications and Networking Conference (WCNC). IEEE Wireless Communications and Networking Conference, WCNC, vol. 2021-March, IEEE, Institute of Electrical and Electronics Engineers, Piscataway NJ USA, IEEE Wireless Communications and Networking Conference 2021, Nanjing, China, 29/03/21. https://doi.org/10.1109/WCNC49053.2021.9417451

Orthogonal time sequency multiplexing modulation. / Thaj, Tharaj; Viterbo, Emanuele.
2021 IEEE Wireless Communications and Networking Conference (WCNC). ed. / Mutlu Koca. Piscataway NJ USA: IEEE, Institute of Electrical and Electronics Engineers, 2021. (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2021-March).

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

TY - GEN

T1 - Orthogonal time sequency multiplexing modulation

AU - Thaj, Tharaj

AU - Viterbo, Emanuele

PY - 2021

Y1 - 2021

N2 - This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme based on the well known Walsh-Hadamard transform (WHT) combined with row-column interleaving, and zero padding (ZP) between blocks in the time-domain. The information symbols in OTSM are multiplexed in the delay and sequency domain using a cascade of time-division and Walsh-Hadamard (sequency) multiplexing. By using the WHT for transmission and reception, the modulation and demodulation steps do not require any complex multiplications. We then propose two low-complexity detectors: (i) a simpler non-iterative detector based on a single tap minimum mean square time-frequency domain equalizer and (ii) an iterative time-domain detector. We demonstrate, via numerical simulations, that the proposed modulation scheme offers high performance gains over orthogonal frequency division multiplexing (OFDM) and exhibits the same performance of orthogonal time frequency space (OTFS) modulation, but with lower complexity. In proposing OTSM, along with simple detection schemes, we offer the lowest complexity solution to achieving reliable communication in high mobility wireless channels, as compared to the available schemes published so far in the literature.

AB - This paper proposes orthogonal time sequency multiplexing (OTSM), a novel single carrier modulation scheme based on the well known Walsh-Hadamard transform (WHT) combined with row-column interleaving, and zero padding (ZP) between blocks in the time-domain. The information symbols in OTSM are multiplexed in the delay and sequency domain using a cascade of time-division and Walsh-Hadamard (sequency) multiplexing. By using the WHT for transmission and reception, the modulation and demodulation steps do not require any complex multiplications. We then propose two low-complexity detectors: (i) a simpler non-iterative detector based on a single tap minimum mean square time-frequency domain equalizer and (ii) an iterative time-domain detector. We demonstrate, via numerical simulations, that the proposed modulation scheme offers high performance gains over orthogonal frequency division multiplexing (OFDM) and exhibits the same performance of orthogonal time frequency space (OTFS) modulation, but with lower complexity. In proposing OTSM, along with simple detection schemes, we offer the lowest complexity solution to achieving reliable communication in high mobility wireless channels, as compared to the available schemes published so far in the literature.

KW - Delay–Doppler Channel

KW - Delay–Sequency

KW - Detector

KW - Gauss Seidel

KW - Matched Filtering

KW - Orthogonal Time Sequency Multiplexing

KW - OTFS

KW - OTSM

KW - Walsh Hadamard Transform

UR - https://www.scopus.com/pages/publications/85106098139

U2 - 10.1109/WCNC49053.2021.9417451

DO - 10.1109/WCNC49053.2021.9417451

M3 - Conference Paper

AN - SCOPUS:85106098139

SN - 9781728195063

T3 - IEEE Wireless Communications and Networking Conference, WCNC

BT - 2021 IEEE Wireless Communications and Networking Conference (WCNC)

A2 - Koca, Mutlu

PB - IEEE, Institute of Electrical and Electronics Engineers

CY - Piscataway NJ USA

T2 - IEEE Wireless Communications and Networking Conference 2021

Y2 - 29 March 2021 through 1 April 2021

ER -

Orthogonal time sequency multiplexing modulation

Abstract

Publication series

Conference

Keywords

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