| QIAO Yuan-zhe,LU Ze-hui,YAN Bao-luo,LI Chang-jin,ZHANG Hao,LIN Wei,LIU Hai-feng,LIU Bo.Performance of differential phase shift keying maritime laser communication over log-normal distribution turbulence channel[J].Optoelectronics Letters,2021,17(2):90-95 |
| Performance of differential phase shift keying maritime laser communication over log-normal distribution turbulence channel |
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| Abstract: |
| Laser communication is essential part of maritime-terrestrial-air intelligent communication/sensor network. Among them, different modulation formats would play a unique role in specific applications. Based on Rytov theory, we discussed system performance of the maritime laser communication with repeated coding technology in several modulation schemes. The closed-form expression of average bit error rate (BER) from weak to moderate atmospheric turbulence described by log-normal distribution is given. Differential phase shift keying (DPSK) modulation, as a potential solution for future maritime laser communication, has attracted a lot of attention. We analyzed the effects of atmospheric turbulence parameters (visibility, refractive index structure coefficient, non-Kolmogorov spectral power-law exponent, turbulence inner scale) and DPSK system parameters (receiver aperture diameter, repeat time) on average BER in detail. Compared with the aperture-averaging effects, the system BER can be well suppressed through increasing repeat time. This work is anticipated to provide a theoretical reference for maritime laser communication systems. |
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