Anliang Liu, Hongzhi Li. Transmission Performance of Probabilistic Shaping Orthogonal Frequency Division Multiplexing Radio-over-Fiber Communication System Based on Low Density Parity Check Code[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0107002
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0107002 (2023)
Fig. 1. PS coding rules based on LDPC
Fig. 2. Constellation probability distribution diagram. (a) Normal 16QAM; (b) PS-16QAM
Fig. 3. Generation and demodulation schematic diagram of PS-OFDM signal
Fig. 4. Schematic of PS-OFDM-ROF system
Fig. 5. Optical spectra of MZM output signal
Fig. 6. Bit error rate (BER) versus transmit power
Fig. 7. Recovered constellation diagram of 16QAM-PS-OFDM signal. (a) Normal OFDM-RoF system; (b) PS-OFDM-RoF system
Fig. 8. PAPR curves of normal OFDM-RoF system and PS-OFDM-RoF system
Fig. 9. BER curves at different fiber lengths (L). (a) L=0; (b) L=10 km; (c) L=20 km
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