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 RIS-assisted FSO/QAM systems over weak atmospheric turbulence channels
Tác giả hoặc Nhóm tác giả: Duong Huu Ai, Tran The Son and Vuong Cong Dat
Nơi đăng: CITA 2022; Số: 978-604-84-6711-1;Từ->đến trang: 10-16;Năm: 2022
Lĩnh vực: Công nghệ thông tin; Loại: Bài báo khoa học; Thể loại: Trong nước
TÓM TẮT
Free-space optical (FSO) communication systems are where free
space acts as a communication channel between transceivers that are line-ofsight (LOS) for successful transmission of optical signals. FSO communication
are a promising candidate to support the high-speed connections requirements
of the fifth-generation (5G) and beyond wireless communication networks.
The FSO transmissions through the atmosphere, nevertheless, bring significant
challenges, besides the uncertainty of atmospheric channels, especially the signal fading due to the atmospheric turbulence, attenuation and pointing errors
caused by the random beam misalignments between transceivers, signal obstruction due to buildings or trees can prevent the transmitted message to reach
the destination. In this paper, we theoretically analyze the average symbol error rate (ASER) of reconfigurable intelligent surfaces (RIS) assisted FSO link
over log-normal turbulence channels. We study the RIS effect by taking into
account the influence of link distance, transmitted optical power and quadrature amplitude modulation (QAM) scheme on the ASER.
ABSTRACT
Free-space optical (FSO) communication systems are where free
space acts as a communication channel between transceivers that are line-ofsight (LOS) for successful transmission of optical signals. FSO communication
are a promising candidate to support the high-speed connections requirements
of the fifth-generation (5G) and beyond wireless communication networks.
The FSO transmissions through the atmosphere, nevertheless, bring significant
challenges, besides the uncertainty of atmospheric channels, especially the signal fading due to the atmospheric turbulence, attenuation and pointing errors
caused by the random beam misalignments between transceivers, signal obstruction due to buildings or trees can prevent the transmitted message to reach
the destination. In this paper, we theoretically analyze the average symbol error rate (ASER) of reconfigurable intelligent surfaces (RIS) assisted FSO link
over log-normal turbulence channels. We study the RIS effect by taking into
account the influence of link distance, transmitted optical power and quadrature amplitude modulation (QAM) scheme on the ASER.
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