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Title: Analysis on the performance of reconfigurable intelligent surface-aided free-space optical link under atmospheric turbulence and pointing errors
Authors: Duong, Huu Ai
Dang, Dai Tho
Nguyen, Vu Anh Quang
Nguyen, Van Loi
Keywords: free-space optical communications
log-normal turbulence channels
pointing error effects
quadrature amplitude modulation
reconfigurable intelligent surfaces
Issue Date: Aug-2023
Publisher: International Journal of Electrical and Computer Engineering (IJECE)
Abstract: Free-space optical (FSO) communication can provide the cost-efficient, secure, high data-rate communication links required for applications. For example, it provides broadband internet access and backhauling for the fifth-generation (5G) and the sixth-generation (6G) communication networks. However, previous solutions to deal with signal loss caused by obstructions and atmospheric turbulence. In these solutions, reconfigurable intelligent surfaces (RISs) are considered hardware technology to improve the performance of optical wireless communication systems. This study investigates the pointing error effects for RIS-aided FSO links under atmospheric turbulence channels. We analyze the performance of RIS-aided FSO links influenced by pointing errors, atmospheric attenuation, and turbulence for the subcarrier quadrature amplitude modulation (SC-QAM) technique. Atmospheric turbulence is modeled using log-normal distribution for weak atmospheric turbulence. Several numerical outcomes obtained for different transmitter beam waist radius and pointing error displacement standard deviation are shown to quantitatively illustrate the average symbol error rate (ASER)
Description: International Journal of Electrical and Computer Engineering (IJECE); Vol. 13, No. 4; pp. 4204-4211
URI: http://10.11591/ijece.v13i4.pp4204-4211
ISSN: 2088-8708
Appears in Collections:NĂM 2023

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