Shuangling GU, Feng ZHANG, Xia PENG, Li ZHAO. Virtual time reversal method for channel equalization in non-orthogonal multiple access optical communication systems[J]. Journal of Applied Optics, 2024, 45(2): 475
- Journal of Applied Optics
- Vol. 45, Issue 2, 475 (2024)
Fig. 1. NOMA-VLC system
Fig. 2. Multi-user VLC system and light source radiation model
Fig. 3. Block diagram of virtual time-reversal principle of visible light channel
Fig. 4. Multipath fading model channel gains
Fig. 5. NOMA-VLC communication measurement platform with VTRM equalization
Fig. 6. Constellation diagram of user 1 and user 2 after demodulation
Fig. 7. BER performance analysis of algorithm
Fig. 8. BER performance analysis of different channel equalization methods
Fig. 9. BER performance of different multipath channels
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Table 1. Parameters setting
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Table 2. SNR performance analysis under different channel equalization methods
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