Abstract
Free space optical (FSO) communication systems are an encouraging solution to very high-speed rates of data. It has become an attractive communication technology due to improvements in system design and transmission techniques. As the transmitted signal is propagated throughout the atmosphere, the major challenge of the system of FSO is to rationalize the different effects of atmosphere to achieve an optimal optical signal propagation. An analytical approach is adopted to find an effective solution for an FSO link that is affected by turbulence. In this paper, the BPSK, OOK, 8-PSK, QPSK, and 16-PSK schemes of modulation are considered. A comparison of the different modulation schemes operating over varying distances is presented. The log-normal distribution is used to model a weak atmospheric turbulence channel. The numerical evaluation has been carried out to identify the BER performance results and power penalties. Finally, we have analyzed the optimum link distance and PSK technique to achieve a reduced error rate and improved SNR.
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Hasan, S. et al. (2022). Performance Analysis of Modulation Techniques over a Smart City Optical Communication Channel Under Weak Atmospheric Turbulence. In: Rani, S., Sai, V., Maheswar, R. (eds) IoT and WSN based Smart Cities: A Machine Learning Perspective. EAI/Springer Innovations in Communication and Computing. Springer, Cham. https://doi.org/10.1007/978-3-030-84182-9_12
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