Analysis of hybrid FSO/RF communication system under the effects of combined atmospheric fading and pointing errors

Magidi, S.; Jabeena, A.

doi:10.1007/s11082-022-03586-y

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…Compared with radio frequency communication, it has the advantages of a high speed, wide bandwidth, and license-free spectrum. Therefore, this technology has gradually become a hotspot in communication [1][2].When the optical carrier transmits in the atmospheric channel, the turbulence gives rise to fluctuation in the intensity of the laser signal, which degrades the communication quality and even interrupts communication.…”

Section: Introductionmentioning

confidence: 99%

Optimal signal receiving technology based on APD in atmospheric laser communications

Zhao

2023

J. Phys.: Conf. Ser.

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The intensity fluctuation of atmospheric turbulence significantly affects the performance of the laser communication system. To suppress the turbulence effect, we propose an avalanche photodiode (APD) optimal gain formula under the turbulence channel, taking the real-time received signal-to-noise ratio (SNR) as the evaluation parameter of the turbulence channel’s state. Based on this formula, we design a model of the optimal optical signal receiver in the atmospheric channel, utilizing the Fuzzy-Pi control mechanism to adapt to the nonlinear properties caused by turbulence. The experimental results show the feasibility and advantages of the control mechanism. In addition, when turbulence is weak, as Rytov variance is equal to 0.145, the variance of light intensity flicker is lowered from 0.1353 to 0.103. As Rytov variance rise to 1.068, the variance of light intensity flicker decreased from 0.6547 to 0.32.

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Section: Introductionmentioning

confidence: 99%

Optimal signal receiving technology based on APD in atmospheric laser communications

Zhao

2023

J. Phys.: Conf. Ser.

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“…proposed in [20] to solve the shortcomings of the method in [19]. [21] analyzed the hybrid FSO/RF system under the combined influence of pointing errors and atmospheric turbulence. In addition, [22] and [23] also investigated parallel multi-hop hybrid relay systems, which are equipped with both FSO and RF transceivers at each hop.…”

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confidence: 99%

Performance Analysis of Hybrid FSO/RF-THz Relay Communication System

Liang,

Chen,

2024

IEEE Photonics J.

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In the connection between the last kilometer access network and the backbone network, the dual-hop hybrid freespace optical/radio frequency(FSO/RF) relay system is considered to be an effective solution to increase the capacity and coverage of the wireless communication system. However, the transmission performance of FSO link is greatly affected by atmospheric turbulence, pointing errors and weather such as fog and snow, and the RF access network has low rate and relatively high delay. To ensure communication quality, a hybrid FSO/RFterahertz(THz) relay system has been designed. Decode-andforward relay is selected, and the hybrid FSO/RF communication based on adaptive combining scheme is considered before the relay node, and THz link is used after the relay node to access the users. Using the statistical characteristics of different links obtained, expressions for the outage probability and average bit error rate of the system were derived. The effects of different parameters on the performance of hybrid FSO/RF-THz relay system is studied, and the first hop adaptive combining scheme is compared with the single-threshold switching scheme and the single-link FSO system. The analysis results indicate that the hybrid FSO/RF-THz relay system can provide better outage and bit error rate performance by using the adaptive combining scheme, which can improve the system communication rate while taking into account the communication reliability.

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Research Progress on OWC/RF Hybrid Communication Systems

2024

Handbook of Optical Wireless Communication

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Analysis of hybrid FSO/RF communication system under the effects of combined atmospheric fading and pointing errors

Cited by 7 publications

References 34 publications

Optimal signal receiving technology based on APD in atmospheric laser communications

Optimal signal receiving technology based on APD in atmospheric laser communications

Performance Analysis of Hybrid FSO/RF-THz Relay Communication System

Research Progress on OWC/RF Hybrid Communication Systems

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