30 May 2018 Bit-error-rate performance of optical wireless system using higher order mode laser in anisotropic non-Kolmogorov turbulence
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Abstract
The average bit-error-rate,   ⟨  BER  ⟩  , of optical wireless system using higher order mode laser beam is investigated when atmospheric turbulence shows anisotropic and non-Kolmogorov characteristics. Results reveal that increase in anisotropy in both x- and y-directions positively affects the optical wireless systems performance. Increase in the beam order results in an increase in   ⟨  BER  ⟩   for any anisotropy level, and thus, higher order beams adversely affect the optical wireless systems performance. Larger structure constant, beam source size, and propagation distance result in larger   ⟨  BER  ⟩  , but larger wavelength, inner scale length, and signal-to-noise ratio tend to reduce   ⟨  BER  ⟩  . Increase in the power-law exponent of non-Kolmogorov turbulent spectrum first increases the   ⟨  BER  ⟩   until a certain value, and then   ⟨  BER  ⟩   starts to decrease when the power-law exponent is further increased. Adverse effect of higher order laser beam holds to be valid for any power-law exponent of non-Kolmogorov turbulence.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yalçın Ata, Yalçın Ata, Yahya Baykal, Yahya Baykal, } "Bit-error-rate performance of optical wireless system using higher order mode laser in anisotropic non-Kolmogorov turbulence," Optical Engineering 57(5), 056113 (30 May 2018). https://doi.org/10.1117/1.OE.57.5.056113 . Submission: Received: 11 January 2018; Accepted: 15 May 2018
Received: 11 January 2018; Accepted: 15 May 2018; Published: 30 May 2018
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