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- W2808064617 abstract "Abstract In this paper, we investigate the performance of a high-altitude platform (HAP)-based relaying free-space optical communication (FSO) system, where HAP plays a role as a relay node that employs detect-and-forward relaying scheme to connect between two ground stations (GSs). <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mi>M</m:mi> </m:math> $M$ -ary pulse-position modulation (PPM), spatial diversity, and heterodyne detection receiver are used to improve the system’s performance. Instead of using multiple-input multiple-output (MIMO), which makes the HAP complex, multiple-input single-output (MISO) is applied to the uplink while single-input multiple-output (SIMO) is utilized for the downlink. Consequently, the HAP only needs a couple of transmit and receive aperture. The expression for the bit error rate (BER) of the proposed FSO system is derived considering the impact of atmospheric attenuation and turbulence. The achievable BER with low values has proved the feasibility of our proposed system. In addition, the advantages of using <m:math xmlns:m=http://www.w3.org/1998/Math/MathML> <m:mi>M</m:mi> </m:math> $M$ -PPM, spatial diversity, and heterodyne detection are demonstrated in terms of the power gain and the geometric distance between two GSs. Other useful information for system design regarding the required transmitted power, the number of transmit/receive apertures, the modulation level, and the local oscillator power is also provided in this paper." @default.
- W2808064617 created "2018-06-21" @default.
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- W2808064617 date "2018-06-13" @default.
- W2808064617 modified "2023-09-25" @default.
- W2808064617 title "Performance Enhancement of HAP-Based Relaying M-PPM FSO System Using Spatial Diversity and Heterodyne Detection Receiver" @default.
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- W2808064617 doi "https://doi.org/10.1515/joc-2018-0033" @default.
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