On the Performance of Multiplexing FSO MIMO Links in Log-Normal Fading With Pointing Errors

Dabiri, Mohammad Taghi; Saber, Mohammad Javad; Sadough, Seyed Mohammad Sajad

doi:10.1364/jocn.9.000974

Cited by 52 publications

(27 citation statements)

References 38 publications

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“…By substituting (?? ), (4), (5), and (6) into (10), and utilizing [42,Eq. (2.24.2.3)] and after some algebraic manipulations and simplifications, the PDF of Ψ D is expressed as…”

Section: Pdf and Cdf Of Snr For Dual-hop Rf-fso Linkmentioning

confidence: 99%

“…[4]. However, in the case of long distance communication, some factors like pointing error and atmospheric turbulence deteriorate the overall performance of FSO networks significantly [5]- [7]. A dual-hop mixed RF-FSO system can be considered as a Mixed RF-FSO frameworks have been investigated thoroughly in recent years because of its promising nature.…”

Section: Introduction a Backgroundmentioning

confidence: 99%

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On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

et al. 2020

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The emergence of an array of new wireless networks has led researchers to evaluate the prospect of utilizing the physical properties of the wireless medium in order to design secure systems. In this paper, the physical layer secrecy performance of a mixed radio frequency-free space optical (RF-FSO) system with variable gain relaying scheme is investigated in the presence of an eavesdropper. We assume that the eavesdropper can wiretap the transmitted confidential data from the RF link only. It is further assumed that the main and eavesdropper RF links are modeled as generalized Gamma (GG) fading channel, and the free space optical (FSO) link experiences Málaga turbulence with pointing error impairment. Our primary concern is to protect this confidential information from being wiretapped. Besides pointing error, the atmospheric turbulence and two types of detection techniques (i.e. heterodyne detection and intensity modulation with direct detection) are also taken into consideration. Utilizing amplify-and-forward (AF) scheme, the novel mathematical closed-form expressions for average secrecy capacity, lower bound of secrecy outage probability, and strictly positive secrecy capacity are derived. As both the links (RF and FSO) undergo generalized fading channels, the derived expressions are also general. We present a unification of some existing works utilizing the proposed model to better clarify the novelty of this work. Finally, all the derived expressions are justified via Monte-Carlo simulations. INDEX TERMS Physical layer security, Generalized Gamma fading, Málaga fading, variable gain relay, average secrecy capacity, strictly positive secrecy capacity, and secrecy outage probability.

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“…By substituting (?? ), (4), (5), and (6) into (10), and utilizing [42,Eq. (2.24.2.3)] and after some algebraic manipulations and simplifications, the PDF of Ψ D is expressed as…”

Section: Pdf and Cdf Of Snr For Dual-hop Rf-fso Linkmentioning

confidence: 99%

Section: Introduction a Backgroundmentioning

confidence: 99%

On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

et al. 2020

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“…Another major challenge is pointing error which cannot be neglected among the fading due to dynamic wind loads, thermal expansion, and internal vibrations [4]. To eliminate the fading caused by atmospheric channel and pointing error, a large fraction of research has focused on multiple-input multiple-output (MIMO) technology to improve the system performance [5].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of MPPM-Coded Wireless Optical MIMO System with Combined Effects over Correlated Fading Channel

Zhang

Wang

Cao

et al. 2020

International Journal of Antennas and Propagation

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The performance of wireless optical MIMO system with multiple pulse position modulation (MPPM) over correlated fading channel is investigated. The combined effects of atmospheric attenuation, atmospheric turbulence, and pointing error are taken into consideration. The bit error rate (BER) and the ergodic channel capacity are analyzed by utilizing the Poisson counting model and the exponential correlation model. Moreover, their approximate expressions are derived. The simulation results demonstrate that the pointing error is the most prominent influence factor over weak correlated channel. The performance degradation caused by a high channel correlation coefficient is more than that of pointing error in strong correlated channel. Therefore, the use of pointing, acquisition, and tracking (PAT) system and reasonable arrangement of the number and spacing of antennas at the transceiver are the keys to improve system performance.

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“…There are several ways to mitigate the inter-mode crosstalk, including wavefront sensor (WFS) or wavefront sensorless based adaptive optics (AO) systems [21][22][23], digital multi-input multi-output (MIMO) equalization [24][25][26], and advanced forward error correction (FEC) based channel coding techniques [27][28][29]. AO systems are usually implemented in satellite communications to mitigate wavefront distortion, while their commercial application in near-Earth FSO links is greatly limited by the expensive WFS and deformable mirror (DM).…”

Section: Introductionmentioning

confidence: 99%

Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation

Qu¹,

Djordjević²

2018

Applied Sciences

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In this paper, we experimentally investigate the turbulence mitigation methods in free-space optical communication systems based on orbital angular momentum (OAM) multiplexing.To study the outdoor atmospheric turbulence environment, we use an indoor turbulence emulator. Adaptive optics, channel coding, Huffman coding combined with low-density parity-check (LDPC) coding, and spatial offset are used for turbulence mitigation; while OAM multiplexing and wavelength-division multiplexing (WDM) are applied to boost channel capacity.

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On the Performance of Multiplexing FSO MIMO Links in Log-Normal Fading With Pointing Errors

Cited by 52 publications

References 38 publications

On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

On Secrecy Performance of Mixed Generalized Gamma and Málaga RF-FSO Variable Gain Relaying Channel

Performance Evaluation of MPPM-Coded Wireless Optical MIMO System with Combined Effects over Correlated Fading Channel

Orbital Angular Momentum Multiplexed Free-Space Optical Communication Systems Based on Coded Modulation

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