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	2019
dc.identifier.citation	Raviteja P, Hong Y, Viterbo E, Biglieri E. Effective diversity of OTFS modulation. IEEE Wireless Communications Letters. 2019. DOI: 10.1109/LWC.2019.2951758
dc.identifier.citation	2162-2337
dc.identifier.citation	http://dx.doi.org/10.1109/LWC.2019.2951758
dc.identifier.uri	http://hdl.handle.net/10230/43231
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation	IEEE Wireless Communications Letters. 2019.
dc.relation	info:eu-repo/grantAgreement/EC/H2020/694974
dc.rights	info:eu-repo/semantics/embargoedAccess
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.subject	Delay–Doppler channel
dc.subject	Diversity
dc.subject	OTFS
dc.title	Effective diversity of OTFS modulation
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/acceptedVersion
dc.description.abstract	Data de publicació electrònica: 06-11-2019
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.abstract	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.

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