Dual-Hop RF/FSO Systems Over $\kappa$-$\mu$ Shadowed and Fisher-Snedecor ${\mathcal F}$ Fading Channels With Non-Zero Boresight Pointing Errors

Ding, Junrong; Xie, Xu; Tan, Liying; Ma, Jing; Kang, Dongpeng

doi:10.1109/jlt.2021.3120767

Cited by 20 publications

(19 citation statements)

References 41 publications

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“…The final expression of L 1 is given by (32). Following the similar approach, L 2 , L 3 and L 4 lead to (33), (34), and (35). Here, G n,m:m1,n1:m2,n2 q,p:p1,q1:p2,q2…”

Section: B Bit Error Rate (Ber)mentioning

confidence: 99%

“…We considered DF approach to achieve considerable better performance than AF at low SNR. In particular, hybrid RF/FSO communication systems [34], [35] are deployed in both the source-to-HAPS and the HAPS-to-destination links and selection combining (SC) scheme is applied at HAPS and destination node [36], [37]. FSO link has practical limitations like beam alignment, beam wander, scintillation, and changes caused by receiver's orientation deviations.…”

Section: Introductionmentioning

confidence: 99%

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On the Performance and Optimization of HAPS Assisted Dual-Hop Hybrid RF/FSO System

et al. 2022

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In this paper, we derive accurate outage probability and bit error rate expressions for a high altitude platform station (HAPS) assisted terrestrial communication system. In particular, HAPS is deployed as a relay node to assist two ground stations for data transmission. Each ground station-to-HAPS communication link works on a hybrid radio frequency (RF) and free space optics (FSO) mode. Selection combining is performed at the HAPS and the destination ground station to select either RF or FSO link based on the instantaneous channel signal-to-noise ratio (SNR). The accuracy of the derived outage probability and bit error rate expressions are validated with extensive computer simulations. We further develop an optimal power allocation scheme that optimizes the transmit power of source-ground-station and HAPS while satisfying practical energy consumption constraints. The derived expressions provide more insights on system design and assist analyzing HAPS-terrestrial integrated network supported by hybrid RF/FSO system.

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“…The final expression of L 1 is given by (32). Following the similar approach, L 2 , L 3 and L 4 lead to (33), (34), and (35). Here, G n,m:m1,n1:m2,n2 q,p:p1,q1:p2,q2…”

Section: B Bit Error Rate (Ber)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Performance and Optimization of HAPS Assisted Dual-Hop Hybrid RF/FSO System

et al. 2022

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“…Substituting ( 8) and ( 33) in (32), and applying the definition of Meijer's G-function, we get i −ai−ui)] 1+j . Thus, using I 1 in (34) and applying the definition of Meijer G-function, we get the combine PDF of F-turbulence with the non-zero boresight pointing error…”

Section: Appendix A: Lemma 1 (Long-range and Single-hop)mentioning

confidence: 99%

Multihop Optical Wireless Communication Over ${\cal{F}}$-Turbulence Channels and Generalized Pointing Errors with Fog-Induced Fading

Rahman¹,

Zafaruddin²,

Chaubey³

2022

Preprint

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Multihop relaying is a potential technique to mitigate channel impairments in optical wireless communications (OWC). In this paper, multiple fixed-gain amplify-and-forward (AF) relays are employed to enhance the OWC performance under the combined effect of atmospheric turbulence, pointing errors, and fog. We consider a long-range OWC link by modeling the atmospheric turbulence by the Fisher-Snedecor F distribution, pointing errors by the generalized non-zero boresight model, and random path loss due to fog. We also consider a short-range OWC system by ignoring the impact of atmospheric turbulence. We derive novel upper bounds on the probability density function (PDF) and cumulative distribution function (CDF) of the end-toend signal-to-noise ratio (SNR) for both short and long-range multihop OWC systems by developing exact statistical results for a single-hop OWC system under the combined effect of Fturbulence channels, non-zero boresight pointing errors, and foginduced fading. Based on these expressions, we present analytical expressions of outage probability (OP) and average bit-error-rate (ABER) performance for the considered OWC systems involving single-variate Fox's H and Meijer's G functions. Moreover, asymptotic expressions of the outage probability in high SNR region are developed using simpler Gamma functions to provide insights on the effect of channel and system parameters. The derived analytical expressions are validated through Monte-Carlo simulations, and the scaling of the OWC performance with the number of relay nodes is demonstrated with a comparison to the single-hop transmission.

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“…Our research focuses on the performance of dual-hop RF/FSO relaying systems (e.g., outage probability (OP), average bit error rate (BER), and ergodic capacity (EC)). In fact, many studies on the performance of the kind of systems have been reported [6]- [19]. For the FSO link, joint effects of atmospheric turbulence and pointing errors were studied.…”

Section: Introductionmentioning

confidence: 99%

Joint Effects of Co-Channel Interferences and Pointing Errors on Dual-Hop Mixed RF/FSO Fixed-Gain and Variable-Gain Relaying Systems

et al. 2023

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The performance of a dual-hop mixed radio frequency (RF)/free space optical (FSO) system with co-channel interferences (CCIs) is studied for both fixed-gain and variablegain amplify-and-forward(AF) relaying scenarios. The RF link and interference link undergo the κ-µ shadowed fading and the FSO link experiences the Fisher-Snedecor F distribution with pointing errors. For the considered system, we derive new closedform expressions for the probability density function (PDF), cumulative distribution function (CDF), and average bit error rate (BER) of the end-to-end signal-to-interference-plus-noise ratio (SINR). In addition, efficient numerical expressions for the ergodic capacity are also obtained. Moveover, the asymptotic expressions for the CDF and average BER are derived. Our results can be regarded as a generalization of the previous results. Finally, numerical and simulation results are presented to verify the correctness of the proposed expressions.

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Dual-Hop RF/FSO Systems Over $\kappa$-$\mu$ Shadowed and Fisher-Snedecor ${\mathcal F}$ Fading Channels With Non-Zero Boresight Pointing Errors

Cited by 20 publications

References 41 publications

On the Performance and Optimization of HAPS Assisted Dual-Hop Hybrid RF/FSO System

On the Performance and Optimization of HAPS Assisted Dual-Hop Hybrid RF/FSO System

Multihop Optical Wireless Communication Over ${\cal{F}}$-Turbulence Channels and Generalized Pointing Errors with Fog-Induced Fading

Joint Effects of Co-Channel Interferences and Pointing Errors on Dual-Hop Mixed RF/FSO Fixed-Gain and Variable-Gain Relaying Systems

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