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

Show simple item record Ouyang, Xing Dobre, Octavia A. Guan, Yong Liang Zhao, Jian 2017-12-15T12:22:43Z 2017-12-15T12:22:43Z 2017-08-08
dc.identifier.citation Ouyang, 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.2017.2737596 en
dc.identifier.volume 24 en
dc.identifier.issued 10 en
dc.identifier.startpage 1488 en
dc.identifier.endpage 1492 en
dc.identifier.issn 1070-9908
dc.identifier.issn 1558-2361
dc.identifier.doi 10.1109/LSP.2017.2737596
dc.description.abstract With 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.sponsorship Natural Science and Engineering Research Council of Canada (Discovery program); Economic Development Board - Singapore (Research grant S15-1105-RF-LLF URBAN) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Institute of Electrical and Electronics Engineers 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.uri standards/publications/rights/index.html en
dc.subject IoT en
dc.subject Chirp en
dc.subject Diffraction en
dc.subject Modulation en
dc.subject CSS en
dc.subject Fresnel transform en
dc.subject LoRa en
dc.subject Nyquist en
dc.subject Internet-of-Things en
dc.subject Orthogonal chirp-division multiplexing en
dc.subject OCDM en
dc.subject Cascading style sheets en
dc.subject Bandwidth en
dc.title Chirp spread spectrum toward the Nyquist signaling rate - orthogonality condition and applications en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Jian Zhao, Tyndall Photonics, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2017-11-24T12:20:57Z
dc.description.version Accepted Version en
dc.internal.rssid 419811057
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Natural Sciences and Engineering Research Council of Canada en
dc.contributor.funder Economic Development Board - Singapore en
dc.description.status Peer reviewed en
dc.identifier.journaltitle IEEE Signal Processing Letters en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Career Development Award/15/CDA/3652/IE/Technologies towards Flexible High-Capacity Optical Networks/ en

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