Xi Li, Chunlei Zhang, Huan Wang. 16QAM/OFDM-RoF System Based on Probabilistic Shaping[J]. Laser & Optoelectronics Progress, 2021, 58(9): 0906008
- Laser & Optoelectronics Progress
- Vol. 58, Issue 9, 0906008 (2021)
Fig. 1. Block diagram of BICM-PS program
Fig. 2. Mapping rule diagram of 16QAM probabilistic shaping coding scheme
Fig. 3. PS-based RoF system
Fig. 4. Probability distribution of PS-16QAM
Fig. 5. 80 GHz OFDM optical and electrical spectrogram. (a) Spectrogram; (b) electrical spectrogram
Fig. 6. Constellation diagrams of 16QAM/OFDM signal transmitted through optical fibers with different lengths. (a) 0 km; (b) 10 km; (c) 20 km
Fig. 7. Constellation diagrams of PS-16QAM/OFDM signal transmitted through optical fibers with different lengths. (a) 0 km; (b) 10 km; (c) 20 km
Fig. 8. Comparison of bit error rate and transmitting optical power between probability shaping and traditional 16QAM/OFDM
Fig. 9. Constellation diagrams of PS-16QAM/OFDM signal transmitted through optical fibers with different lengths. (a) 0 km; (b) 10 km; (c) 20 km
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