Abstract
A digital predistortion waveform shaping scheme combined with a blue filter is proposed to optimize both the rise and fall times of a light-emitting diode (LED) and the optical receiver current of the signal of the real-time visible light communication (VLC) system. The proposed scheme is implemented on a field-programmable gate array (FPGA) and a digital-to-analog converter based test bed, which is flexible and reconfigurable by programming the FPGA to match different LED characteristics and varied data rates. A 262-Mb/s non-return-to-zero on-off keying modulation based real-time VLC link with a bit error rate of less than 1.0×10−6 is achieved over a transmission distance of 5.0 m, which uses a single white phosphorous LED with a limited power of 0.1 W.
Original language | English |
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Pages (from-to) | 1-10 |
Journal | IEEE Photonics Journal |
Volume | 10 |
Issue number | 3 |
Early online date | 27 Apr 2018 |
DOIs | |
Publication status | Published - 1 Jun 2018 |
Keywords
- Digital pre-distortion waveform shaping (DPDWS)
- real-time visible light communication (VLC)
- rise and fall times
- white phosphorous LED