Abstract
Free space optical (FSO) communication systems are getting popularity because of high capacity and addressing high bandwidth but face some typical challenges during data transmission through free space. This paper represents an analysis of terrestrial FSO network under the impact of adverse weather conditions for a wavelength of 1.55 µm. The evaluation of pointing error for practical bit error rate (BER) is carried out through two-dimensional (2-D) wavelength-hopping/time-spreading (WH/TS) optical code division multiple access (OCDMA) technique. This approach enhances the capability of carrying a large number of simultaneous users. The BER performance is investigated in terms of proposed system parameters in the presence of an unavoidable effect of pointing error. Additionally, the optical link budget and the loss margins of the proposed system are evaluated with different pointing errors assuming it symmetrical for receivers and transmitters. It has been observed that the BER performance is highly dependent on the radial pointing errors of transmitter and receiver.
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Mitra, B., Islam, M.J., Hammadi, M.M.A. (2020). Impact of Pointing Error on the Performance of 2-D WH/TS OCDMA in FSO. In: Saini, H.S., Singh, R.K., Tariq Beg, M., Sahambi, J.S. (eds) Innovations in Electronics and Communication Engineering. Lecture Notes in Networks and Systems, vol 107. Springer, Singapore. https://doi.org/10.1007/978-981-15-3172-9_9
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DOI: https://doi.org/10.1007/978-981-15-3172-9_9
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