Xiongwei Yang, Feng Zhao, Linxian Zhao, Zhao Meng. Phase Recovery Algorithm for Adaptive Probabilistic Shaping Signal Based on K-means[J]. Acta Optica Sinica, 2022, 42(9): 0906001
- Acta Optica Sinica
- Vol. 42, Issue 9, 0906001 (2022)
Fig. 1. Flow chart of K-means clustering algorithm
Fig. 2. Schematic diagram of phase recovery algorithm
Fig. 3. Schematic diagram of system simulation
Fig. 4. Variation of normalized conversion factor with modulus variance
Fig. 5. Radius relocation results. (a) Information entropy is 3.78 bit·symbol-1; (b) information entropy is 3.56 bit·symbol-1; (c) information entropy is 3.30 bit·symbol-1
Fig. 6. BER and EVM after signal recovery under different OSNR. (a) BER; (b) EVM
Fig. 7. NGMI curves of 16QAM with different information entropy and different line width
Fig. 8. BER and EVM after signal recovery under different OSNR. (a) BER; (b) EVM
Fig. 9. NGMI curves of 64QAM with different information entropy for different line width
Fig. 10. Simulation results. (a)(b) 4 bit·symbol-1 16QAM; (c)(d) 2.8 bit·symbol-1 16QAM; (e)(f) 6 bit·symbol-1 64QAM; (g)(h) 4.71 bit·symbol-1 64QAM
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