UAV-Assisted RF/FSO Relay System for Space-Air-Ground Integrated Network: A Performance Analysis

Qu, Lin; Xu, Guanjun; Zeng, Zhi; Zhang, Ning; Zhang, Qinyu

doi:10.1109/twc.2022.3147823

Cited by 68 publications

(32 citation statements)

References 47 publications

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“…It is also to be noted by considering UAV, the combined channel gain and its statistics such as probability density function (PDF) and cumulative distribution function (CDF) will be entirely different. • Moreover, in recent works [28], [29] related to UAVbased mixed FSO/RF communication systems, non-zero boresight pointing error and the link interruption due to AoA fluctuations have been ignored in the FSO channel model and analysis. • Further, it is of practical significance to carry out the asymptotic analysis to derive the diversity gain and get more insights into the system performance.…”

Section: A Motivationsmentioning

confidence: 99%

“…In [27], the performance of a UAV-based FSO system employing prepare and measure continuous-variable quantum key distribution (CV-QKD) protocol based on Gaussian modulation of quantum coherent states (GMCS) under collective attacks was investigated in terms of outage probability, quantum bit error rate (QBER), and secret key rate (SKR). In [28] and [29], the authors carried out the comprehensive performance analysis of UAV-based mixed FSO/RF system models for internet of vehicles (IoV) and space ground integrated network (SAGIN) scenarios, respectively. The atmospheric turbulence of FSO link in [28] and [29] is modeled using Málaga distribution and the RF link is modeled using κ-µ and shadowed Rician distributions, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…In [28] and [29], the authors carried out the comprehensive performance analysis of UAV-based mixed FSO/RF system models for internet of vehicles (IoV) and space ground integrated network (SAGIN) scenarios, respectively. The atmospheric turbulence of FSO link in [28] and [29] is modeled using Málaga distribution and the RF link is modeled using κ-µ and shadowed Rician distributions, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Comprehensive Performance Analysis of Hovering UAV-Based FSO Communication System

Singh

Swaminathan

2022

IEEE Photonics J.

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Unmanned-aerial-vehicle (UAV)-based communications are expected to play an important role in the future generation wireless communication networks. It is a promising solution to enhance the wireless connectivity of devices without infrastructure. As compared to the terrestrial communications, UAVs offer various advantages such as line-of-sight (LoS) connectivity, dynamic deployment and flexible reconfiguration. Further, free space optics (FSO) communication is considered as a possible solution to enable UAV-based communication links due to its cost effective and high bandwidth nature. However, despite offering large bandwidth, UAV-based FSO links are marred by atmospheric path loss, atmospheric turbulence, non-zero boresight pointing errors, and angle-of-arrival (AoA) fluctuations. In this paper, the performance of a hovering UAV-based FSO communication system is investigated. The closed-form expressions for outage probability, average symbol error rate (SER), and ergodic capacity are derived taking into account both heterodyne (HD) and direct detection (DD) techniques for ground-to-UAV (G2U), UAV-to-UAV (U2U), and UAV-to-ground (U2G) links over the generalized Málaga distribution. Moreover, the asymptotic expressions for the above performance metrics are also derived to get the diversity gain of the system.

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Section: A Motivationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comprehensive Performance Analysis of Hovering UAV-Based FSO Communication System

Singh

Swaminathan

2022

IEEE Photonics J.

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“…Aerial communication systems [13] have been proposed by third generation partnership project (3GPP) in its release 17 to be adopted in cellular communication systems for fifth generation (5G) or beyond 5G (B5G) systems in order to provide an ad-hoc coverage to ensure the seamless or on-demand emergency communications [14]. Aerial networks can be configured with low altitude platform station/unmanned aerial vehicle (UAV) [15], [16] or highaltitude platform station (HAPS) [17]. In particular, HAPS has generated significant attention in recent years to provide connectivity services both in rural and urban areas and for achieving disaster-tolerant network applications [18]- [20].…”

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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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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“…Optical wireless communication (OWC), also known as free-space optical communication, is an attractive technology that enjoys the features such as high data rate, cost-effective, license-free spectrum, ease of deployability, low power consumption and inherently more secure than traditional RF communications [1]- [3]. These unique features has recently gained considerable attentions within the research and industry communities, for a variety of systems ans applications such as 5G and beyond 5G [4], [5], cooperative relaying [6], inter-satellite communications [7], unmanned aerial vehicle (UAV)-assisted [8], intelligent reflecting surface (IRS) assisted OWC [9], [10], and in the Industry 4.0, where a long-standing challenge is present to transfer real-time broadband data (e.g., video monitoring data) among machines [11]. However, despite the remarkable benefits, the pervasive deployment of optical wireless systems is subjected to high vulnerability to damaging atmospheric conditions [12].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Transmission for Two-Way Relaying Optical Wireless Communications

Ahmadi¹,

Kuhestani²,

Ghasemi-Sami³

2022

Preprint

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<p>This paper proposes an adaptive transmission scheme for two-way amplify-and-forward (AF) relaying over optical wireless communications. The two terminals utilize sub- carrier phase shift keying (S-PSK) intensity modulation for data transmission, and the atmospheric turbulence impacts on the transmitted signals. The proposed transmission scheme exploits efficient utilization of the optical wireless channel capacity by adjusting the modulation order of S-PSK. While meeting pre-determined bit error rate (BER) requirements for each terminal, the selected modulation order of each terminal corresponds to the instantaneous condition of turbulence-induced fading. A new expression is derived for the spectral efficiency of the proposed two-way relaying scheme and then performance investigations are carried out under various turbulence conditions. Numerical examples illustrate that the proposed two-way relaying scheme enjoys better spectral efficiency compared with the traditional direct transmission scheme in a high signal-to-noise-ratio regime.</p>

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UAV-Assisted RF/FSO Relay System for Space-Air-Ground Integrated Network: A Performance Analysis

Cited by 68 publications

References 47 publications

Comprehensive Performance Analysis of Hovering UAV-Based FSO Communication System

Comprehensive Performance Analysis of Hovering UAV-Based FSO Communication System

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

Adaptive Transmission for Two-Way Relaying Optical Wireless Communications

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