Mi Le, Hu Siqi, Zhou Tianhua, Chen Weibiao. Long Distance Underwater Laser Communication System Based on Low-Density Parity Check Codes and Pulse-Position Modulation[J]. Chinese Journal of Lasers, 2018, 45(10): 1006002
- Chinese Journal of Lasers
- Vol. 45, Issue 10, 1006002 (2018)
Fig. 1. Variation of received power and pulse broadening with transmission distance under three different water quality parameters. (a) Received power versus transmission distance; (b) pulse broadening versus transmission distance
Fig. 2. Processing flow chart of system signal
Fig. 3. BER versus SNR under different code rates
Fig. 4. Installation of underwater laser communication system
Fig. 5. Sampling map for analog detection signal at 130 m
Fig. 6. SNR and BER curves. (a) SNR versus underwater transmission distance; (b) measured BER versus SNR by different ways of coding
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Table 1. Typical water quality parameters of Jerlov
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Table 2. Parameters of experimental system
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Table 3. Measured SNR and BER at different transmission distances
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