Reliability analysis of the flat-topped array beam FSO communication link

Golmohammady, Shole; Yousefi, Masoud; Kashani, F.D.; Ghafary, Bijan

doi:10.1080/09500340.2013.805843

Cited by 11 publications

(7 citation statements)

References 20 publications

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“…Moreover, finding a good solution to overcome the destructive effects of turbulence and consequently increase in quality of the communication link parameters in FSO systems is an engaging topic that has attracted theoretical and experimental researchers' attentions [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Laser Physicsmentioning

confidence: 99%

“…Lots of papers, which are introduced and explained above related to the atmosphere, are limited to the case of the ideal atmospheric turbulence such as the Kolmogorov model [1,5,6,8,9,14,15,21,22].…”

Section: Laser Physicsmentioning

confidence: 99%

“…By considering a flat-topped field propagation with circular symmetry from the plane z = 0 into half space z > 0, the off-axis electrical field distribution of the pth beamlet, which is centered at the position (a p , b p ) can be expressed as the following finite sum of Gaussian beams in the transverse coordinate system [4,8,16,17]:…”

Section: Slant Propagation Of Pcft Array Laser Beams Through Non-kolm...mentioning

confidence: 99%

“…where 'Tr' denotes the trace of the cross-spectral density matrix. Using the extended Huygens-Fresnel principle [4,8,17], the cross-spectral density of the array beam in the observed plane ( z > 0), can be determined from the knowledge of the cross-spectral density in the source plane (z = 0), Γ ij (r 1 , r 2 , 0), as follows [4,8,17]:…”

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confidence: 99%

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Scintillation and BER analysis of the partially coherent flat-topped array laser beam in the non-Kolmogorov atmospheric turbulence on slant path

Golmohammady¹,

Yousefi²,

Mashal³

et al. 2019

Laser Phys.

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Using the extended Huygens-Fresnel principle in this paper, a semi analytical expression for describing the on-axis scintillation index of a partially coherent flat-topped array laser beam through slant path of non-Kolmogorov atmospheric turbulence is derived; consequently, with the help of the log-normal intensity probability density function, the bit error rate (BER) is evaluated. The main aims of this paper are exploring the effects of source factors (such as wavelength, order of flatness, and beam width) and the non-Kolmogorov turbulent atmosphere parameters (such as Kolmogorov inner scale, general spectral power-law exponent, the turbulence structure constant) on propagation behaviour of scintillation index, and, hence, on BER. Results indicate that, when the average SNR increases, BER is more affected while the power-law exponent increases. Consequently, it can be deduced that the mean bit error rate increases while the power-law exponent decreases. In addition, the scintillation index and BER as communication link parameters represent the fact that increasing the atmospheric refractive-index structure parameter on the ground and decreasing the inner scale of turbulence eddies, which expresses the conditions of strong turbulence, causes an increase in theses link parameters.

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Section: Laser Physicsmentioning

confidence: 99%

Section: Laser Physicsmentioning

confidence: 99%

Section: Slant Propagation Of Pcft Array Laser Beams Through Non-kolm...mentioning

confidence: 99%

mentioning

confidence: 99%

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Scintillation and BER analysis of the partially coherent flat-topped array laser beam in the non-Kolmogorov atmospheric turbulence on slant path

Golmohammady¹,

Yousefi²,

Mashal³

et al. 2019

Laser Phys.

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“…Various aspects of the propagation in the turbulent atmosphere of optical array beam incidences are being investigated for some time [1][2][3][4][5][6][7]. Array beams are known to represent the multiple-input portion of a multiple-input multiple-output (MIMO) free space optics (FSO) link.…”

Section: Introductionmentioning

confidence: 99%

Analysis of field correlations in atmospheric optical MIMO systems

Baykal

Uysal

2014

2014 3rd International Workshop in Optical Wireless Communications (IWOW)

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Due to copyright restrictions, the access to the full text of this article is only available via subscription.In this paper, we evaluate the absolute field correlations for a free space optical (FSO) multiple-input multiple-output (MIMO) link operating in a turbulent atmosphere. Such knowledge is needed in heterodyne reception to keep all the optical detectors within the region in which a predefined correlation value is fulfilled. The variations of the absolute field correlations versus the longest distance between the detectors are found for different array, medium and receiver parameters such as the number of beamlets, the radius of the radial array, beamlet size, link length, wavelength, structure constant and the position of the detectors.COST Actio

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