Fig. 1. Model of indoor visible light communication system

Fig. 2. Structures of different receivers. (a) 2-FOV receiver; (b) ADR; (c) 2FOV-ADR; (d) PD coordinate system

Fig. 3. Model of channel

Fig. 4. Principle of MIMO ACO-OFDM system

Fig. 5. Plan-view of room

Fig. 6. BER at R1 position as a function of elevation angle of 2FOV-ADR receiver

Fig. 7. Channel gain at R1 position as a function of elevation angle of 2FOV-ADR receiver. (a) Channel gain between LED1 and receiver; (b) channel gain between LED2 and receiver

Fig. 8. Distributions of minSNR at output end of receiver with ZF equalizer. (a) 2-FOV receiver; (b) ADR receiver; (c) 2FOV-ADR receiver

Fig. 9. CRF distribution of minSNR at output end of receiver with ZF equalizer

Fig. 10. Contour plots of BER of receivers with ZF equalizer. (a) 2-FOV receiver; (b) ADR; (c) 2FOV-ADR

Fig. 11. BER as a function of R_EN at four typical positions. (a) 2-FOV receiver; (b) ADR; (c) 2FOV-ADR