Effective diversity of OTFS modulation
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- dc.contributor.author Raviteja, P.
- dc.contributor.author Hong, Yi
- dc.contributor.author Viterbo, Emanuele
- dc.contributor.author Biglieri, Ezio
- dc.date.accessioned 2019-12-24T12:06:31Z
- dc.date.issued 2020
- dc.description.abstract Orthogonal time frequency space (OTFS) modulation, which encodes information symbols in the delay–Doppler domain, offers a promising solution to the problem of high Doppler sensitivity of orthogonal frequency division multiplexing (OFDM) transmission. In this paper we study the diversity of OTFS assuming rectangular waveforms and a delay–Doppler channel with two paths. After introducing the concept of effective diversity (ED), which we argue to be more significant than “standard” diversity in the case of a large number of transmitted symbols, we examine the conditions under which OTFS achieves full ED for QAM symbols. We validate our analytical results through numerical simulations, which show that OTFS practically achieves full ED with sufficiently large signal constellations.
- dc.description.sponsorship The work of the first three authors was supported by the Australian Research Council through the Discovery Project under Grant DP160100528. The work of Ezio Biglieri was supported by the European Research Council under the H2020 Framework Programme/ERC grant agreement 694974.
- dc.format.mimetype application/pdf
- dc.identifier.citation Raviteja P, Hong Y, Viterbo E, Biglieri E. Effective diversity of OTFS modulation. IEEE Wireless Communications Letters. 2020 Feb;9(2):249-53. DOI: 10.1109/LWC.2019.2951758
- dc.identifier.doi http://dx.doi.org/10.1109/LWC.2019.2951758
- dc.identifier.issn 2162-2337
- dc.identifier.uri http://hdl.handle.net/10230/43231
- dc.language.iso eng
- dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
- dc.relation.ispartof IEEE Wireless Communications Letters. 2020 Feb;9(2):249-53
- dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/694974
- dc.rights © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. http://dx.doi.org/10.1109/LWC.2019.2951758
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.subject.keyword Delay–Doppler channel
- dc.subject.keyword Diversity
- dc.subject.keyword OTFS
- dc.title Effective diversity of OTFS modulation
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/acceptedVersion