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Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

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  • Beam wander of J (0)- and I (0)-Bessel Gaussian beams propagating in turbulent atmosphere 
    Çil, Celal Zaim; Eyyuboğlu, Halil T.; Baykal, Yahya; Korotkova, Olga; Cai, Yangjian (Springer, 2010-01)
    Root mean square (rms) beam wander of J (0)-Bessel Gaussian and I (0)-Bessel Gaussian beams, normalized by the rms beam wander of the fundamental Gaussian beam, is evaluated in atmospheric turbulence. Our formulation is ...
  • Beams with arbitrary field profiles in turbulence - art. no. 652209 
    Baykal, Yahya (Spie-Int Soc Optical Engineering, 2006)
    Characteristics of optical beam incidences that have arbitrary field profiles are examined when they propagate in the turbulent atmosphere. Arbitrary source field profile is introduced by decomposing the source into ...
  • Ber anaylsis for super lorentz-gaussian laser beamspropagating in turbulent media 
    Gökçe, Muhsin Caner; Sarı, Filiz; Özek, Faruk (Gazi Univ, Fac Engineering Architecture, 2013-12)
    In this work, BER-SNR variation of super Lorentz-Gaussian laser beam that propagating horizontally path in turbulent media is analyzed. Using scintillation index which is obtained by extented Huygens-Fresnel principle, BER ...
  • BER evaluations for multimode beams in underwater turbulence 
    Altay Arpalı, Serap; Baykal, Yahya; Arpalı, Çağlar (Taylor&Francis Ltd., 2016)
    In underwater optical communication links, bit error rate (BER) is an important performance criterion. For this purpose, the effects of oceanic turbulence on multimode laser beam incidences are studied and compared in terms ...
  • BER for Higher Order Laser Modes in Optical Wireless Underwater Communications 
    Altay Arpalı, Serap; Baykal, Yahya; Arpalı, Çağlar (IEEE, 2016)
    Average bit error rate (<BER>) of an underwater optical communication system is analyzed for higher order laser beams. For this purpose, the effects of oceanic turbulence parameters and link parameters on single mode higher ...
  • BER of annular and flat-topped beams in non-Kolmogorov weak turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Elsevier Science Bv, 2013-01-01)
    The average bit error rate (BER) of multi-Gaussian beams in non-Kolmogorov weak turbulence is examined. For each specific incidence of annular and flat-topped optical beam, a power law of non-Kolmogorov spectrum is found ...
  • BER of annular and flat-topped beams in strong turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya (Elsevier Science Bv, 2013-07-01)
    The average bit error rate (< BER >) of annular and flat-topped beams are evaluated in strong turbulence. In this respect, our earlier results on the scintillation indices obtained by the unified Rytov method are employed ...
  • Ber of Annular Beams in Strong Turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya; Eyyuboğlu, Halil T. (2010)
    Bit error rate (BER) of annular beams is found in strong turbulence. Examining effects of beam and medium parameters on BER reveals that annular beams become favorable in stronger turbulence and at smaller focal lengths.
  • Bessel Beam Diffraction by an Aperture in an Opaque Screen 
    Başdemir, Hüsnü Deniz (2015)
    The scattering of the Bessel beam by a circular aperture in an opaque screen is investigated by the geometrical theory of diffraction approach. The geometrical optics and diffracted and scattered fields are obtained. The ...
  • Binary Phase Shift Keying-Subcarrier Intensity Modulation Performance in Weak Oceanic Turbulence 
    Gökçe, Muhsin Caner; Baykal, Yahya; Ata, Yalçın (Elsevier B.V., 2019-12)
    The performance analysis of underwater wireless optical communication (UWOC) system that employs binary phase shift keying-subcarrier intensity modulation (BPSK-SIM) is investigated in weak oceanic turbulence. BPSK-SIM ...
  • Bit error rate analysis of Gaussian, annular Gaussian, cos Gaussian, and cosh Gaussian beams with the help of random phase screens 
    Eyyuboğlu, Halil T. (Optical Soc Amer, 2014-06-10)
    Using the random phase screen approach, we carry out a simulation analysis of the probability of error performance of Gaussian, annular Gaussian, cos Gaussian, and cosh Gaussian beams. In our scenario, these beams are ...
  • Bit error rate analysis of MISO FSO systems 
    Gökçe, Muhsin Caner; Baykal, Yahya; Uysal, Murat (Taylor&Francis Ltd., 2016)
    Multiple-input single-output (MISO) systems are employed in free space optical (FSO) links to mitigate the degrading effects of atmospheric turbulence. In this paper, we consider a MISO FSO system with practical transmitter ...
  • Bit Error Rate of A Gaussian Beam Propagating Through Biological Tissue 
    Altay Arpalı, Serap; Arpalı, Çağlar; Baykal, Yahya (Bit Error Rate of A Gaussian Beam Propagating Through Biological Tissue, 2020-01-23)
    The scintillation index and bit error rate (BER) of a Gaussian beam propagating in a weakly turbulent soft tissue are formulated and analysed numerically. The scintillation indices are plotted against half of the measured ...
  • Bit error rates for focused general-type beams 
    Altay Arpalı, Serap; Baykal, Yahya (Electromagnetics Acad, 2009)
    Using the scintillation index of general beam formulation, bit error rate (BER) is investigated for focused Gaussian, cos-Gaussian, cosh-Gaussian and annular beams in weak atmospheric turbulence. We have employed our ...
  • Bit error rates for general beams 
    Altay Arpalı, Serap; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-11-10)
    In order to analyze the effect of beam type on free space optical communication systems, bit error rate (BER) values versus signal-to-noise ratio (SNR) are calculated for zero order and higher order general beam types, ...
  • Bombardment of Ni(100) surface with low-energy argons: molecular dynamics simulations 
    Güvenç, Ziya B. (Elsevier Science SA, 2005-03-01)
    Results of molecular dynamics simulations of the sputtering of Ni(100) by Ar atoms are reported. The solid is described by an embedded atom potential, and the interaction between the projectile and the metal atoms is ...
  • Boundary diffraction wave theory approach to corner diffraction 
    Umul, Yusuf Ziya (Elsevier GMBH, 2019)
    The scattering process of plane waves by a discontinuous edge contour is studied with the three dimensional boundary diffraction wave theory. The edge and corner diffracted fields are obtained from the stationary phase and ...
  • Boundary diffraction wave theory of junctions between two surfaces with different face impedances 
    Umul, Yusuf Ziya (Elsevier Science Ltd, 2012-07)
    The line integral of the boundary diffraction wave theory is derived for the diffraction process of waves by a junction between two surfaces with different face impedances. The exact solution of Maliuzhinets is used with ...
  • Boundary diffraction wave theory of resistive surfaces with edge discontinuities 
    Umul, Yusuf Ziya (Elsevier Science Bv, 2011-10-15)
    The line integral of the boundary diffraction wave theory is derived by considering the exact diffracted fields of a resistive half-plane. The line integral is generalized for arbitrary resistive surface with edge ...
  • Bounds for generalized gamma distributed fading channels 
    Gazi, Orhan (IEEE-Inst Electrical Electronics Engineers Inc, 2011-12)
    In this article, upper bounds for the outage probability and moment generating functions of the fading channels with alpha - mu distribution are derived. The proposed upper bound for the moment generating function is used ...