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- W3171048953 abstract "Free space optical (FSO) communication systems experience turbulence-induced fading. As a possible solution to mitigate the effects of fading, adaptive transmission that allows the adjustment of transmission parameters such as transmit power and modulation size can be used. Most of the existing works on adaptive FSO systems assume the presence of full channel state information (CSI) at the transmitter side. In practice, incomplete/outdated CSI may prevent the complete extraction of the theoretical gain expected from adaptive systems. In this letter, to avoid the difficulties associated with feedback, we propose a feedback-free adaptive modulation selection algorithm for FSO systems. We formulate the design as an optimization problem where average throughput is maximized by selecting the largest modulation order under the constraint that the required transmit power for a targeted bit error rate (BER) value does not exceed the maximum transmit power. We further present numerical results to confirm the superiority of the proposed adaptive algorithm." @default.
- W3171048953 created "2021-06-22" @default.
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- W3171048953 date "2021-09-01" @default.
- W3171048953 modified "2023-10-13" @default.
- W3171048953 title "Feedback-Free Adaptive Modulation Selection Algorithm for FSO Systems" @default.
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- W3171048953 doi "https://doi.org/10.1109/lwc.2021.3088871" @default.
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