Orthogonal Time Frequency Space Modulation : Part I : Fundamentals and Challenges Ahead

Zhiqiang WEI; Shuangyang LI; Weijie YUAN; Robert SCHOBER; Giuseppe CAIRE

doi:10.1109/LCOMM.2022.3209689

Orthogonal Time Frequency Space Modulation : Part I : Fundamentals and Challenges Ahead

Zhiqiang WEI, Shuangyang LI^*, Weijie YUAN, Robert SCHOBER, Giuseppe CAIRE

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

21 Citations (Scopus)

Abstract

This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks. This letter introduces and compares two popular implementations of OTFS modulation, namely the symplectic finite Fourier transform (SFFT)- and discrete Zak transform (DZT)-based architectures. Based on these transceiver architectures, fundamental concepts of OTFS modulation, including the delay-Doppler (DD) domain, DD domain information multiplexing, and its potential benefits, are discussed. Finally, the challenges ahead for OTFS modulation are highlighted.

Original language	English
Pages (from-to)	4-8
Number of pages	5
Journal	IEEE Communications Letters
Volume	27
Issue number	1
Early online date	26 Sept 2022
DOIs	https://doi.org/10.1109/LCOMM.2022.3209689
Publication status	Published - Jan 2023
Externally published	Yes

Bibliographical note

This work is supported in part by National Natural Science Foundation of China under Grant 62101232, and in part by the Guangdong Provincial Natural Science Foundation under Grant 2022A1515011257. The work of Robert Schober and Giuseppe Caire is supported by BMBF Germany in the program of “Souverän. Digital. Vernetzt.” Joint Project 6G-RIC (Project IDs 16KISK030 and 16KISK023).

Keywords

delay-Doppler domain
DZT
OTFS
SFFT

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10.1109/LCOMM.2022.3209689

Cite this

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abstract = "This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks. This letter introduces and compares two popular implementations of OTFS modulation, namely the symplectic finite Fourier transform (SFFT)- and discrete Zak transform (DZT)-based architectures. Based on these transceiver architectures, fundamental concepts of OTFS modulation, including the delay-Doppler (DD) domain, DD domain information multiplexing, and its potential benefits, are discussed. Finally, the challenges ahead for OTFS modulation are highlighted.",

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AU - CAIRE, Giuseppe

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AB - This letter is the first part of a three-part tutorial on orthogonal time frequency space (OTFS) modulation, which is a promising candidate waveform for future wireless networks. This letter introduces and compares two popular implementations of OTFS modulation, namely the symplectic finite Fourier transform (SFFT)- and discrete Zak transform (DZT)-based architectures. Based on these transceiver architectures, fundamental concepts of OTFS modulation, including the delay-Doppler (DD) domain, DD domain information multiplexing, and its potential benefits, are discussed. Finally, the challenges ahead for OTFS modulation are highlighted.

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Orthogonal Time Frequency Space Modulation : Part I : Fundamentals and Challenges Ahead

Abstract

Bibliographical note

Keywords

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