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A Dimmable Offline LED Driver With OOK-M-FSK Modulation for VLC Applications.
- Source :
-
IEEE Transactions on Industrial Electronics . Jul2019, Vol. 66 Issue 7, p5220-5230. 11p. - Publication Year :
- 2019
-
Abstract
- This paper proposes a visible light communication (VLC) system consisting of a single-stage buck–boost power factor correction converter operating in the discontinuous conduction mode with dimming capability. Additionally, this paper proposes the on–off M-frequency shift keying modulation for the VLC system. This modulation allows for the transmission of more than a single bit for each switching period without affecting the dimming characteristics of the light-emitting diode luminaire. The design of the whole system is discussed in detail, including both transmitter and receiver modules. A 20-W laboratory prototype was built in order to verify the proposed modulation scheme. The experimental evaluation showed a good performance of the transmitter, which was able to perform simultaneously the desired functions, namely power factor correction, dimming, and data transmission. The receiver also achieved the desired performance with a low bit error rate (BER). The results showed that the proposed system was able to transfer data between emitter and receiver with a bit rate of 1.11 Mb/s at a frequency of up to 375 kHz over a distance of 10 m, and with a BER lower than $10^{-3}$ under the influence of external lighting sources with illuminance levels up to 500 lx. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 66
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 135140733
- Full Text :
- https://doi.org/10.1109/TIE.2018.2868022