Wireless Energy and Information Transmission in FSO and RF-FSO Links

Makki, Behrooz; Svensson, Tommy; Buisman, Koen; Pérez, Joaquín; Alouini, Mohamed‐Slim

doi:10.1109/lwc.2017.2755658

Cited by 31 publications

(20 citation statements)

References 7 publications

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“…Pan et al investigated the secrecy performance of a hybrid visible light communication (VLC)-RF system with light energy harvesting and derived analytical expressions for exact and asymptotic SOP in [26]. Makki et al analyzed the throughput and OP for the hybrid RF-FSO SWIPT systems and a power allocation scheme was proposed in [27]. But all these works considered the hybrid systems, in which the FSO/VLC and RF links were parallel and backup/backhaul.…”

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confidence: 99%

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Lei

Dai

Park

et al. 2018

IEEE Trans. Commun.

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107

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We analyze a secure dual-hop mixed radio frequency-free space optical (RF-FSO) downlink simultaneous wireless information and power transfer (SWIPT) systems. The FSO link and all RF links experience Gamma-Gamma, independent and identical Nakagami-m fading, respectively. We analyze the effects of atmospheric turbulence, pointing error, detection technology, path loss, and energy harvesting on secrecy performance. Signal-to-noise ratios at both legitimate and illegitimate receivers are not independent since they are both simultaneously influenced by the FSO link. We derive the closedform expression of the secrecy outage probability (SOP) as well as the asymptotic result for SOP when signal-to-noise ratios at relay and legitimate destinations tend to infinity. Monte-Carlo simulations are performed to verify the accuracy of our analysis. The results show that the secrecy diversity order (SDO) depends on the fading parameter of the relay-destination link and the number of the destination's antennas. Additionally, the SDO also depends on the fading parameters, the pointing error parameter, and the detection type of the FSO link. Index Terms-Physical layer security, mixed RF-FSO systems, Gamma-Gamma fading, Nakagami-m fading, simultaneous wireless information and power transfer, secrecy outage probability. I. INTRODUCTION A. Background and Related Works Dual-hop mixed radio frequency-free space optical (RF-FSO) systems are designed to overcome atmospheric turbulence and other factors limiting the applications of FSO systems. They can also effectively improve communication coverage, save spectrum resources, avoid relocating devices, and are considered as a powerful candidate for next generation Manuscript received.

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confidence: 99%

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Lei

Dai

Park

et al. 2018

IEEE Trans. Commun.

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107

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“…The transmission of M -ary symbols is considered and assuming a fading free AWGN channel with RF signal power P, the received RF noisy signal y, y = ρ g h P x + z (17) where x ∈ X is the transmitted RF symbols after puncturing using either the BPSK or QPSK, z is the AWGN with zero mean and unit variance. In (20) and (21) of [13], parameters, β and β are given, which are functions of the hybrid symbol period, FSO/RF total loss, RF noise spectral density and background irradiations. Therefore, the analysis involves the real link budget analysis of the FSO and RF communication system.…”

Section: B Rf Channel Modelmentioning

confidence: 99%

“…T sys T sys (21) whereas is the coupling efficiency, G tx and G rx are the transmit and receive FSO and RF gains respectively, d and d are the FSO and RF antenna/aperture diameters and T sys , D denotes the propagation path length and T sys denotes the FSO and RF system noise temperature respectively. The link budget is calculated using the following practical parameters defined in Table 4.…”

Section: Hybrid Fso-rf Link Budgetmentioning

confidence: 99%

Hybrid Optical-Radio Transmission System Link Quality: Link Budget Analysis

2020

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From the last few decades' radio frequency (RF) spectrum remained attractive for wireless/wire-line applications. RF spectrum becomes dense and occupied, which makes its availability difficult to other broadband channels. Free space optical (FSO) communication, which was used for messaging/indication in the ancient days, now becomes more popular and attractive in the new era. The popularity of FSO is due to its freely available large spectrum, inherited secure links and ease of deployment. However, FSO link has to face certain challenges, e.g., line-of-sight (LOS) requirement, link attenuation due to atmospheric turbulence and severe weather conditions. To overcome the issues of FSO communication, hybrid optical-radio transmission system is proposed by which we can get maximum benefits of both spectrum. Considering the proposed transmission system link quality, link budget analysis is done in the presented work. Link budget design of transmission system is important to analyze and give recommendations. INDEX TERMS Free space communication (FSO), link budget analysis (LBA), radio frequency (RF), signal dependent Gaussian noise (SDGN), signal independent Gaussian noise (SIGN).

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“…Up to now, the performance of different RF wireless systems with energy harvesting has been extensively studied in the literature [4]. However, to the best of the authors' knowledge, the performance of optical communication systems with energy harvesting only was reported in [5]- [9], for instance, optimal dual-hop visible light communication (VLC)-RF networks with energy harvesting [5], a secure hybrid VLC-RF system with light energy harvesting [6] [7], hybrid RF-FSO systems with simultaneous wireless information and power transfer (SWIPT) [8], and the secure performance for a dual-hop mixed RF-FSO system [9]. However, the performance of mixed dual-hop FSO-RF systems with energy harvesting is still not reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

A Novel Energy Harvesting Scheme for Mixed FSO-RF Relaying Systems

Chen

Yang

Wang

et al. 2019

IEEE Trans. Veh. Technol.

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In this paper, we consider the performance of a mixed free-space optical and radio frequency (FSO-RF) relaying system with energy harvesting in the existence of both atmospheric turbulence and pointing errors. More specially, we assume that the direct current (DC) component of the FSO signal, which is generally filtered out, can be used for energy harvesting at the relay. We derive the exact closed-form expression for the outage probability of this setup in terms of the bivariate Fox-H function. We also provide the asymptotic analysis to obtain the diversity order. Finally, Monte-Carlo simulations are carried out to verify the correctness of our analytical results.

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Wireless Energy and Information Transmission in FSO and RF-FSO Links

Cited by 31 publications

References 7 publications

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Secrecy Outage Analysis of Mixed RF-FSO Downlink SWIPT Systems

Hybrid Optical-Radio Transmission System Link Quality: Link Budget Analysis

A Novel Energy Harvesting Scheme for Mixed FSO-RF Relaying Systems

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