المؤلف
Elamassie, Mohammed, Uysal, Murat
تاريخ النشر
2021-09
مكان النشر
-
IEEE
الموضوع
Free space optical communication, Atmospheric turbulence-induced fading, Weak turbulence conditions, Feedback-free adaptive transmission
النوع
دورية
اللغة
الإنجليزية
رقمي
نعم
مخطوط
لا
المكتبة
جامعة اوزيجين
معرف أصل المكتبة
2162-2337
رقم السجل
bf92afc2-0d59-4d42-82f3-2cc5b32b12a1
موقع المكتبة
Electrical & Electronics Engineering
التاريخ
2021-09
نص عينة
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 In practice, incomplete/outdated CSI may prevent the complete extraction of the theoretical gain expected from adaptive systems.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.
DOI
10.1109/LWC.2021.3088871
Cilt
10
