Details

Autor(en) / Beteiligte

• Wang, Hao-Yu
• Wu, Jhao-Ting
• Chow, Chi-Wai
• Liu, Yang
• Yeh, Chien-Hung
• Liao, Xin-Lan
• Lin, Kun-Hsien
• Wu, Wei-Liang
• Chen, Yi-Yuan

Titel

Using pre-distorted PAM-4 signal and parallel resistance circuit to enhance the passive solar cell based visible light communication

Ist Teil von

• Optics communications, 2018-01, Vol.407, p.245-249

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Using solar cell (or photovoltaic cell) for visible light communication (VLC) is attractive. Apart from acting as a VLC receiver (Rx), the solar cell can provide energy harvesting. This can be used in self-powered smart devices, particularly in the emerging “Internet of Things (IoT)” networks. Here, we propose and demonstrate for the first time using pre-distortion pulse-amplitude-modulation (PAM)-4 signal and parallel resistance circuit to enhance the transmission performance of solar cell Rx based VLC. Pre-distortion is a simple non-adaptive equalization technique that can significantly mitigate the slow charging and discharging of the solar cell. The equivalent circuit model of the solar cell and the operation of using parallel resistance to increase the bandwidth of the solar cell are discussed. By using the proposed schemes, the experimental results show that the data rate of the solar cell Rx based VLC can increase from 20 kbit/s to 1.25 Mbit/s (about 60 times) with the bit error-rate (BER) satisfying the 7% forward error correction (FEC) limit. •Visible light communication (VLC) provides lighting and communication.•Solar cell can act as VLC receiver and energy harvesting.•Pre-distortion PAM-4 and parallel resistor can enhance VLC performance.•The equivalent circuit model of solar cell are simulated and discussed.•60 times increase in data rate can be experimentally achieved.