Performance and Channel Modeling Optimization for Hovering UAV-Assisted FSO Links

Guo, Wenjng; Zhan, Yueying; Tsiftsis, Theodoros A.; Yang, Lüxi

doi:10.1109/jlt.2022.3176352

Cited by 12 publications

(2 citation statements)

References 47 publications

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“…The misalignment errors in [9], which are assumed to be identical in both vertical and horizontal axes, are represented by Rayleigh distribution. A similar approach was used for a UAV-relayed FSO communication system in the Lognormal distributed turbulent channel in [10]. A compherensive survey was published to emphasize the opportunities, challenges, and unexplored potentials of the HAPS and their future deployments [11].…”

Section: Introductionmentioning

confidence: 99%

Performance of Integrated Ground-Air-Space FSO Links Over Various Turbulent Environments

Ata

Alouini

2022

IEEE Photonics J.

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We analyze the outage probability of integrated ground-air-space free-space optical (FSO) communication links for different atmospheric turbulence channel models. The performance of ground to high altitude platforms (HAPS), HAPS to geostationay Earth orbit (GEO) satellite, HAPS to HAPS and ground to GEO satellite is investigated for various link configurations (downlink, horizontal, and uplink) and parameters such as zenith angle, channel state, horizontal and vertical deviations, altitude, beam waist, receiver aperture diameter, wind speed, and visibility. The atmospheric attenuation (the effects of fog, cloud and volcanic activities), atmospheric turbulence, angle of arrival (AOA) fluctuations and pointing error are included in the considered model. Closed-form expressions for the probability density function (PDF) and cumulative distribution function (CDF) are obtained for Lognormal, Gamma and exponentiated Weibull distributed channel models. The benefit of using HAPS is shown by comparison of outage probabilities for direct ground to GEO satellite and HAPS assisted ground to GEO satellite links.Index Terms-free-space optical communication, probability of outage, slant path and horizontal links, high altitude platforms, satellite communications.

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Section: Introductionmentioning

confidence: 99%

Performance of Integrated Ground-Air-Space FSO Links Over Various Turbulent Environments

Ata

Alouini

2022

IEEE Photonics J.

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“…A detailed analysis of the outage performance for uplink HAPS FSO was investigated in various aspects and an optimization of the transmitted laser beam and the field-of-view (FoV) of the receiver was studied to provide minimum error probability in [5]. Then an extended study was performed [6] by adding average bit-error-rate (BER) and ergodic capacity and the performance optimization by properly designing the angle of FoV, the receiver aperture size, and the beam divergence angle was emphasized. The hybrid radio frequency (RF)-FSO ground-satellite communication through HAPS relay was also investigated in [8] and it was shown that the selection of HAPS enhances the performance of ground-satellite link remarkably.…”

mentioning

confidence: 99%

Improving Performance of Integrated Ground-HAPS FSO Communication Links With MIMO Application

Zedini,

Ata,

Alouini

2024

IEEE Photonics J.

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In this paper, we investigate the performance of multiple-input multiple-output (MIMO) free-space optical (FSO) communication systems, encompassing both slant path (downlink and uplink) and horizontal links. The FSO links span groundto-high altitude platform system (HAPS), HAPS-to-ground, and HAPS-to-HAPS configurations. To model the atmospheric turbulence-induced fading, pointing error impairments, and angle-of-arrival (AOA) fluctuations, we employ the Gamma-Gamma distribution, Hoyt distribution, and Rayleigh distribution, respectively. We then derive the probability density function (PDF) of the end-to-end signal-to-noise ratio (SNR) under the combined effect of turbulence, AOA fluctuations, attenuation due to absorption and scattering, and generalized pointing error impairments. Capitalizing on this PDF expression, we present novel results for fundamental performance metrics, including outage probability, average bit-error rate (BER) of on-off keying (OOK) modulation scheme, and ergodic capacity expressed in terms of the Meijer's G function. Additionally, we provide highly accurate asymptotic results for the outage probability and the average BER at high SNR, obtained in terms of simpler functions. Furthermore, we demonstrate that the integration of MIMO configurations in either the transmitter, receiver, or both significantly enhances the performance of FSO communication links. To validate our analytical results, computer-based Monte-Carlo simulations are conducted, affirming the reliability of our findings.

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Fine-Grained Particle Swarm Optimization for UAV Trajectory Design in FSO Relay Communication

Feng,

Zhao,

Kai

et al. 2024

2024 IEEE/CIC International Conference on Communications in China (ICCC)

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Performance and Channel Modeling Optimization for Hovering UAV-Assisted FSO Links

Cited by 12 publications

References 47 publications

Performance of Integrated Ground-Air-Space FSO Links Over Various Turbulent Environments

Performance of Integrated Ground-Air-Space FSO Links Over Various Turbulent Environments

Improving Performance of Integrated Ground-HAPS FSO Communication Links With MIMO Application

Fine-Grained Particle Swarm Optimization for UAV Trajectory Design in FSO Relay Communication

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