Chirp spread spectrum toward the Nyquist signaling rate - orthogonality condition and applications

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dc.contributor.authorOuyang, Xing
dc.contributor.authorDobre, Octavia A.
dc.contributor.authorGuan, Yong Liang
dc.contributor.authorZhao, Jian
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderNatural Sciences and Engineering Research Council of Canadaen
dc.contributor.funderEconomic Development Board - Singaporeen
dc.date.accessioned2017-12-15T12:22:43Z
dc.date.available2017-12-15T12:22:43Z
dc.date.issued2017-08-08
dc.date.updated2017-11-24T12:20:57Z
dc.description.abstractWith the proliferation of Internet-of-Things (IoT), the chirp spread spectrum (CSS) technique is re-emerging for communications. Although CSS can offer high processing gain, its poor spectral efficiency and the lack of orthogonality among different chirps tend to limit its potential. In this paper, we derive the condition to orthogonally multiplex an arbitrary number of linear chirps. For the first time in the literature, we show that the maximum modulation rate of the linear continuous-time chirps satisfying the orthogonality condition can approach the Nyquist signaling rate, the same as single-carrier waveforms with Nyquist signaling or orthogonal frequency-division multiplexing signals. The performance of the proposed orthogonal CSS is analyzed in comparison to the emerging LoRa systems for IoT applications with power constraint, and its capability for high-speed communications is also demonstrated in the sense of Nyquist signaling.en
dc.description.sponsorshipNatural Science and Engineering Research Council of Canada (Discovery program); Economic Development Board - Singapore (Research grant S15-1105-RF-LLF URBAN)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationOuyang, X., Dobre, O. A., Guan, Y. L. and Zhao, J. (2017) 'Chirp spread spectrum toward the Nyquist signaling rate - orthogonality condition and applications', IEEE Signal Processing Letters, 24(10), pp.1488-1492. doi: 10.1109/LSP.2017.2737596en
dc.identifier.doi10.1109/LSP.2017.2737596
dc.identifier.endpage1492en
dc.identifier.issn1070-9908
dc.identifier.issn1558-2361
dc.identifier.issued10en
dc.identifier.journaltitleIEEE Signal Processing Lettersen
dc.identifier.startpage1488en
dc.identifier.urihttps://hdl.handle.net/10468/5181
dc.identifier.volume24en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineersen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Career Development Award/15/CDA/3652/IE/Technologies towards Flexible High-Capacity Optical Networks/en
dc.rights© 2017, 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.en
dc.rights.urihttp://www.ieee.org/publications standards/publications/rights/index.htmlen
dc.subjectIoTen
dc.subjectChirpen
dc.subjectDiffractionen
dc.subjectModulationen
dc.subjectCSSen
dc.subjectFresnel transformen
dc.subjectLoRaen
dc.subjectNyquisten
dc.subjectInternet-of-Thingsen
dc.subjectOrthogonal chirp-division multiplexingen
dc.subjectOCDMen
dc.subjectCascading style sheetsen
dc.subjectBandwidthen
dc.titleChirp spread spectrum toward the Nyquist signaling rate - orthogonality condition and applicationsen
dc.typeArticle (peer-reviewed)en
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