Xizheng Ke, Huan Zhang. Indoor Visible Light Uplink Communication System Based on Inverse Modulation[J]. Laser & Optoelectronics Progress, 2018, 55(2): 020601
- Laser & Optoelectronics Progress
- Vol. 55, Issue 2, 020601 (2018)
Fig. 1. Block diagram of visible light single-source full-duplex communication system
Fig. 2. Equivalent model of defocused cat eye inverse modulator
Fig. 3. Modulation signal diagram. (a) Primary modulation signal; (b) secondary modulation signal
Fig. 4. LED driver circuit
Fig. 5. Photoelectric receiving circuit
Fig. 6. Schematic of signal processing circuit
Fig. 7. Inverse modulated indoor visible light full-duplex communication system. (a) Reverse terminal; (b) active terminal
Fig. 8. Video transmission experiment
Fig. 9. Downlink communication signal. (a) Active terminal sending signal; (b) reverse terminal receiving signal
Fig. 10. Secondary modulation signal and power spectrum. (a) Secondary modulation signal; (b) signal power spectrum
Fig. 11. Uplink signal. (a) Signal of reverse terminal; (b) signal of active terminal
Fig. 12. Relation of BER and transmission distance
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