Probability of fade estimation for FSO links with time dispersion and turbulence modeled with the gamma–gamma or the I-K distribution

Varotsos, George K.; Stassinakis, Argyris N.; Nistazakis, Hector E.; Tsigopoulos, A.D.; Peppas, Kostas P.; Aidinis, C. J.; Tombras, George S.

doi:10.1016/j.ijleo.2014.08.047

Cited by 28 publications

(21 citation statements)

References 36 publications

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“…One of the turbulent channel models is Gamma-Gamma model which is operated based on modulation processes. The Gamma-Gamma turbulent channel model can be modeled by received irradiance I [13]:…”

Section: Gamma-gamma Turbulent Channel Modelmentioning

confidence: 99%

“…where Ix and Iy are large and small scale of turbulent eddies, respectively. Also, the probability density function (PDF) of received irradiance distribution function is given as [13]:…”

Section: Gamma-gamma Turbulent Channel Modelmentioning

confidence: 99%

“…where Kn(0) is the modified Bessel function of second kind of order n. α and β are the parameters of Gamma-Gamma distribution related to large-scale and small-scale scintillation, respectively, and Γ(0) is the Gamma function assuming that the optical radiation is a plan wave. Also, α and β are given by [13]:…”

Section: Gamma-gamma Turbulent Channel Modelmentioning

confidence: 99%

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Modeling of RF Waves in Free Space Optical Communication System Under Gamma-Gamma Turbulent Channel Effect

Alipour

Mir

2019

IJOP

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In this paper, an enhancement design of communication system using optical radio frequency (RF) waves in free space optical communication (FSO) system is presented. To our knowledge, it is the first time that the effect of Gamma-Gamma turbulent channel model on the performance of the proposed system is analyzed and simulated. To obtain an optical communication system with good performance and high spectrum efficiency, we proposed two types of optical RF waves including optical single sideband (OSSB) and optical double sideband (ODSB). This strategy that integrated an optical communication system with turbulent channel model can express an accurate model of optical and RF waves propagation in free space. Performance of the system under different regimes, weak, moderate and strong turbulent is studied considering several parameters like max quality factor, bit error rates (BER), and optical signal-to-noise ratio (OSNR). Also, a comparative study between two methods of optical RF waves is presented.

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Section: Gamma-gamma Turbulent Channel Modelmentioning

confidence: 99%

“…where Ix and Iy are large and small scale of turbulent eddies, respectively. Also, the probability density function (PDF) of received irradiance distribution function is given as [13]:…”

Section: Gamma-gamma Turbulent Channel Modelmentioning

confidence: 99%

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Modeling of RF Waves in Free Space Optical Communication System Under Gamma-Gamma Turbulent Channel Effect

Alipour

Mir

2019

IJOP

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“…Considering also the time dispersion effect, we get that the normalized irradiance, for the cases where the longitudinal pulse detection is realized at its the center, [16], [20]: , C is the chirp parameter, T 0 is the half width at 1/e of the maximum intensity, β 2 is the GVD and z m is the links length, [20].…”

Section: E Probability Of Fade Estimationmentioning

confidence: 99%

“…Thus, when negative chirped pulses are employed, the temporal narrowing of their shape for some initial propagation distance may facilitate their detection, if it can be done at the maximum of the pulse. Consequently, contrary to the atmospheric turbulence and pointing errors effect, the influence of time dispersion effect on the FSO systems performance is not always detrimental, but under specific circumstances, can be beneficial, [16], [20].…”

Section: Introductionmentioning

confidence: 99%

On the influence of time dispersion at the availability of optical wireless links with diversity and spatial jitter over Malaga-modeled turbulence

Varotsos

Nistazakis

Stassinakis

et al. 2016

2016 5th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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In this work we investigate the combined detrimental impact of atmospheric turbulence and spatial jitter, i.e. pointing errors, effects on the performance of a terrestrial free space optical (FSO) system, by taking into consideration several time diversity schemes and the time dispersion of the longitudinal optical chirped pulses which are employed. The scintillation effect is modeled through the recently launched Malaga distribution, which accurately emulates irradiance fluctuations due to weak to strong turbulence conditions and unifies most of the well-known statistical models for such fluctuations alike. Additionally, we estimate the availability of those FSO systems by deriving closed-form mathematical expressions for the estimation of the probability of fade of the system and we demonstrate that its value is significantly reduced when time diversity schemes with negative chirped pulses are implemented. Finally, proper numerical results are provided so as to present the influence of each effect at the systems availability.

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Noise Models in Optical Wireless Communication Systems

2024

Handbook of Optical Wireless Communication

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Probability of fade estimation for FSO links with time dispersion and turbulence modeled with the gamma–gamma or the I-K distribution

Cited by 28 publications

References 36 publications

Modeling of RF Waves in Free Space Optical Communication System Under Gamma-Gamma Turbulent Channel Effect

Modeling of RF Waves in Free Space Optical Communication System Under Gamma-Gamma Turbulent Channel Effect

On the influence of time dispersion at the availability of optical wireless links with diversity and spatial jitter over Malaga-modeled turbulence

Noise Models in Optical Wireless Communication Systems

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