Fig. 1. Block diagram of O-OFDM system based on the hybrid post equalizer

Fig. 2. The schematic diagram of the tradition Volterra series hybrid post equalizer

Fig. 3. The flow of the MPV hybrid equalizer to mitigate LED nonlinearity

Fig. 4. The performance of single stage equalizer with different tap numbers in ACO-OFDM system

Fig. 5. The performance of single stage equalizer with different tap numbers in DCO-OFDM system

Fig. 6. Effect of MPV equalizer tap numbers on hybrid equalizer performance in ACO-OFDM system

Fig. 7. Effect of MPV-DFE tap numbers on hybrid equalizer performance in ACO-OFDM system

Fig. 8. BER comparison of different equalizers in 4QAM ACO-OFDM system

Fig. 9. BER comparison of different equalizers in 16QAM ACO-OFDM system