Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154443
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dc.contributor.authorYang, Y.en_US
dc.contributor.authorLuo, Junen_US
dc.date.accessioned2021-12-22T08:28:35Z-
dc.date.available2021-12-22T08:28:35Z-
dc.date.issued2020-
dc.identifier.citationYang, Y. & Luo, J. (2020). Composite amplitude-shift keying for effective LED-camera VLC. IEEE Transactions On Mobile Computing, 19(3), 528-539. https://dx.doi.org/10.1109/TMC.2019.2897101en_US
dc.identifier.issn1536-1233en_US
dc.identifier.urihttps://hdl.handle.net/10356/154443-
dc.description.abstractLED-Camera Visible Light Communication (VLC) is gaining increasing attention, thanks to its readiness to be implemented with Commercial Off-The-Shelf devices and its potential to deliver pervasive data services indoors. Nevertheless, existing LED-Camera VLC systems employ mainly low-order modulations such as On-Off Keying (OOK) given the simplicity of their implementation, yet such rudimentary modulations cannot yield a high throughput. In this paper, we investigate various opportunities of using a high-order modulation to boost the throughput of LED-Camera VLC systems, and we decide that Amplitude-Shift Keying (ASK) is the most suitable scheme given the limited operating frequency of such systems. However, directly driving an LED to emit different levels of luminance may suffer heavy distortions caused by the nonlinear behavior of LED. As a result, we innovatively propose to generate ASK using the composition of light emission. In other words, we digitally control the On-Off states of several groups of LED chips, so that their light emissions compose in the air to produce various ASK symbols. We build a prototype of this novel ASK-based VLC system and demonstrate its superior performance over existing systems: it achieves a rate of 2 kbps at a 1 m distance with only a single LED luminaire for static users and more than 1 kbps for mobile users.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.language.isoenen_US
dc.relationMOE2016-T2-2-022en_US
dc.relation.ispartofIEEE Transactions on Mobile Computingen_US
dc.rights© 2019 IEEE. All rights reserved.en_US
dc.subjectEngineering::Computer science and engineeringen_US
dc.titleComposite amplitude-shift keying for effective LED-camera VLCen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Computer Science and Engineeringen_US
dc.identifier.doi10.1109/TMC.2019.2897101-
dc.identifier.scopus2-s2.0-85078508797-
dc.identifier.issue3en_US
dc.identifier.volume19en_US
dc.identifier.spage528en_US
dc.identifier.epage539en_US
dc.subject.keywordsVisible Light Communicationen_US
dc.subject.keywordsMobile Computingen_US
dc.description.acknowledgementThe authors would like to thank the anonymous reviewers for their constructive feedback and valuable input. This work was supported in part by the Fundamental Research Funds for the central Universities under Grant No. 20822041B4232, National Natural Science Foundation of China under Grant No. 61373091, Sichuan Science and Technology Program under Grant No. 19ZDYF0045 and 19CXTD0005, the AcRF Tier 2 Grant MOE2016-T2-2-022, and the DSAIR Center at NTU.en_US
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