Performance Analysis of FSO Systems Over a Lognormal-Rician Turbulence Channel With Generalized Pointing Errors

Miao, Maoke; Li, Xiaofeng

doi:10.1109/jlt.2022.3161940

Cited by 9 publications

(5 citation statements)

References 47 publications

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“…2(d), we present the KS test results for different combinations of the pointing error parameters, which have been widely used in most practical terrestrial FSO systems. 9,10 Note that the results are obtained by averaging the results of 100 simulation runs, the threshold T max = 0.0136 is also included in these figures as a benchmark.…”

Section: Ks Goodness-of-fit Testsmentioning

confidence: 99%

“…As for the radial models, we note that various types of radial models have been developed in literature, including Rayleigh, Rician, Hoyt, and Beckmann distribution. 9 Specifically, the Beckmann distribution is a versatile model, which includes the other three models as its special cases. Moreover, it should noted be that Rayleigh distribution is expressed in the simplest form among these models, which is conducive to the analytical solution of composite fading, thus facilitating the performance analysis of FSO systems thereafter.…”

Section: Introductionmentioning

confidence: 99%

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A novel variance estimation approach for modified Rayleigh radial model based on the Kullback-Leibler divergence

miao,

Chen,

Yin

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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The implementation of optical communication and quantum communication technologies based on the free space has many advantages when compared with the implementation based on the optical fibers. However, the performance of communication systems can be deteriorated by the atmospheric turbulence when optical beams transmit through the free space, and it has been widely acknowledged that turbulence-induced pointing error is the one of the major performance-limiting factors. The pointing error model consists of two parts, one is the channel transmittance model and the other is radial model. To make the results more general, the Beckmann radial model can be assumed, and it is expressed in an integral form. Therefore, aiming to further analyze the performance of communication systems, researchers have proposed two kinds of modified Rayleigh distributions based on the moment matching method to approximate the Beckmann distribution. In this paper, we present a new variance estimation method of modified Rayleigh distribution based on the Kullback-Leibler divergence. The proposed method has two advantages when compared with the moment matching method proposed before: 1) The derived new variance can reduce the computational cost of gain parameter; 2) It leads to a better approximation to the Beckmann distribution in most scenarios according to the Kolmogorov-Smirnov goodness-of-fit statistical test results.

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Section: Ks Goodness-of-fit Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel variance estimation approach for modified Rayleigh radial model based on the Kullback-Leibler divergence

miao,

Chen,

Yin

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

View full text Add to dashboard Cite

show abstract

“…where the notation (•) ⊗L denotes the L times repetition of a given tuple, G m,n p,q (•| 25) is given in Appendix B. Note that the derived approximate analytic solution of composite channel PDF in (25) facilitates the performance analysis of FSO systems and has not been obtained in the literature. Based on the discussion in Section III-A and extensive simulation studies, it is found that the truncated numbers Q = 50 and K = 15 are sufficient to achieve convergence for all of the numerical examples in the paper.…”

Section: A Approximate Distribution For the Sum Of L Random Variatesmentioning

confidence: 99%

“…Nevertheless, this method can not be used to derive the ergodic capacity at medium SNRs. Recently, the authors in [25] derived the highly accurate expressions for the ergodic capacity and outage performance by using a series representation. However, they only considered the SISO cases and the BER performance was not evaluated.…”

mentioning

confidence: 99%

Novel Approximate Distribution of the Sum of Lognormal-Rician Turbulence Channels With Pointing Errors and Applications in MIMO FSO Links

Miao

2022

IEEE Photonics J.

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In this paper, an approximate closed-form probability density function expression for the sum of lognormal-Rician turbulence channels with Rayleigh pointing errors is developed. The results of Kolmogorov-Smirnov goodness-of-fit statistical tests show that the proposed approximation is highly accurate across a wide range of channel conditions. Also, the analysis of approximation error is presented in detail, and it indicates that a more efficient approximation can be achieved for larger coherence parameter r and smaller variance σ 2 z . To reveal the importance of proposed approximation, the closed-form expressions for the ergodic capacity, outage probability, and bit-error rate are derived in terms of Meijer's G-function. The performance of multiple-input multiple-output (MIMO) free-space optical (FSO) systems with equal gain combining (EGC) diversity technique are analyzed in detail under different scenarios, including the number of transmit and receive apertures, turbulence channels, and presence of pointing errors. It is observed that MIMO technology can offer a significant improvement in FSO performance when compared with the single-input single-output (SISO) systems. The ergodic capacity and BER performance at high signal-to-noise ratio are also obtained to provide further insights. Numerical results demonstrate the accuracy of the proposed approach.

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“…Further, the closed-form expressions for outage probability, BER, and ergodic capacity were derived. In [19], performance analysis of FSO systems over lognormal-Rician fading channel was carried out in terms of outage probability and ergodic capacity using generalized pointing errors model. In [20], hybrid FSO/FSO-RF scheme was proposed, wherein FSO link is used in case of clear LoS path and a backup FSO-RF link is used otherwise.…”

Section: Introductionmentioning

confidence: 99%

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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Performance Analysis of FSO Systems Over a Lognormal-Rician Turbulence Channel With Generalized Pointing Errors

Cited by 9 publications

References 47 publications

A novel variance estimation approach for modified Rayleigh radial model based on the Kullback-Leibler divergence

A novel variance estimation approach for modified Rayleigh radial model based on the Kullback-Leibler divergence

Novel Approximate Distribution of the Sum of Lognormal-Rician Turbulence Channels With Pointing Errors and Applications in MIMO FSO Links

Comprehensive Performance Analysis of Hovering UAV-Based FSO Communication System

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