Yong Chen, Zhiqian Wu, Huanlin Liu, Chenyi Hu, Jinlan Wu, Chuangshi Wang. Neural-Network-Based Channel Estimation Method for Visible Light Communication Systems[J]. Acta Optica Sinica, 2023, 43(7): 0706004
- Acta Optica Sinica
- Vol. 43, Issue 7, 0706004 (2023)
Fig. 1. Structure diagram of ACO-OFDM VLC system
Fig. 2. Channel estimation scheme of ACO-OFDM based on DNN
Fig. 3. Overall structure of DNN
Fig. 4. Schematic of GC optimization process. (a) Schematic of GC optimization; (b) visualization of the effect of GC method
Fig. 5. Optimization process of GC-RMSprop
Fig. 6. MSE of different DNN models varying with the iterations
Fig. 7. BER of different methods at 8 and 64 pilots. (a) 8 pilots; (b) 64 pilots
Fig. 8. MSE of different methods at 8 and 64 pilots. (a) 8 pilots; (b) 64 pilots
Fig. 9. BER and MSE performance of GC-DNN method under different number of pilots. (a) BER; (b) MSE
Fig. 10. BER of different methods with or without CP
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Table 1. Parameter setting of LOS Lambertian communication model
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Table 2. Parameter setting of GC-DNN training phase
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