Performance analysis of IM/DD vs. heterodyne detection techniques of an earth-satellite FSO link for next generation wireless communication

Johari, Shagun; Sundharam, Vaibhav

doi:10.1109/micc.2017.8311757

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…The corresponding parameters are summarized in Table IV. Accordingly, the geometrical attenuation can be given by using the Beer-Lambert law as I g H J G = exp(−ωL H J G ) where L H J G is the propagation distance between H J and G. Hence, the total atmospheric attenuation at ground level can be expressed by [27]…”

Section: B Haps-ground Station Communicationmentioning

confidence: 99%

HAPS Selection for Hybrid RF/FSO Satellite Networks

Yahia¹,

Erdoğan²,

Kurt³

et al. 2021

Preprint

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Non-terrestrial networks have been attracting much interest from the industry and academia. Satellites and high altitude platform station (HAPS) systems are expected to be the key enablers of next-generation wireless networks. In this paper, we introduce a novel downlink satellite communication (SatCom) model where free-space optical (FSO) communication is used between a satellite and HAPS node, and a hybrid FSO/radiofrequency (RF) transmission model is used between the HAPS node and ground station (GS). In the first phase of transmission, the satellite selects the HAPS node that provides the highest signal-to-noise ratio (SNR). In the second phase, the selected HAPS decodes and forwards the signal to the GS. To evaluate the performance of the proposed system, outage probability expressions are derived for exponentiated Weibull (EW) and shadowed-Rician fading models while considering the atmospheric turbulence, stratospheric attenuation, and attenuation due to scattering, path loss, and pointing errors. Furthermore, the impact of aperture averaging, temperature, and wind speed are investigated. Finally, we provide some important guidelines that can be helpful for the design of practical HAPS-aided SatCom.

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Section: B Haps-ground Station Communicationmentioning

confidence: 99%

HAPS Selection for Hybrid RF/FSO Satellite Networks

Yahia¹,

Erdoğan²,

Kurt³

et al. 2021

Preprint

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“…Outage probability (OP) can be defined as the probability that the SNR will fall below a predefined threshold, 𝛾 𝑡 ℎ , for acceptable communication quality. By substituting (12) into (19), with the aid of (18), the OP can be expressed as…”

Section: A Outage Probability Analysismentioning

confidence: 99%

“…Due to the advantages outlined above, optical satellites have become an important topic in the recent literature. In [18]- [21], the issue of optical ground-to-satellite (uplink) communication was considered, and important performance metrics, including outage probability, error probability, and link capacity, were obtained in the presence beam wandering, climatic effects, and atmospheric attenuation. By contrast, [16] and [22] focused on downlink SatCom, where the former investigated the impact of spatial diversity and aperture averaging, and the latter examined the throughput.…”

Section: Introductionmentioning

confidence: 99%

Site Diversity in Downlink Optical Satellite Networks Through Ground Station Selection

Erdoğan¹,

Altunbaş²,

Kurt³

et al. 2020

Preprint

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Recent advances have shown that satellite communication (SatCom) will be an important enabler for next generation terrestrial networks as it can provide numerous advantages, including global coverage, high speed connectivity, reliability, and instant deployment. An ideal alternative for radio frequency (RF) satellites is its free-space optical (FSO) counterpart. FSO or laser SatCom can mitigate the problems occurring in RF Sat-Com, while providing important advantages, including reduced mass, lower consumption, better throughput, and lower costs. Furthermore, laser SatCom is inherently resistant to jamming, interception, and interference. Owing to these benefits, this paper focuses on downlink laser SatCom, where the best ground station (GS) is selected among numerous candidates to provide reliable connectivity and maximum site diversity. To quantify the performance of the proposed scheme, we derive closed-form outage probability and ergodic capacity expressions for two different practical GS deployment scenarios. Furthermore, asymptotic analysis is conducted to obtain the overall site diversity gain, and aperture averaging is studied to illustrate the impact of aperture diameter on the overall performance. Finally, important design guidelines that can be useful in the design of practical laser SatComs are outlined.

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