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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu by Type "workingPaper"

Browsing Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu by Type "workingPaper"

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  • Analysis of delay factors for voice over WiMAX 
    Şafak, A.; Preveze, B. (IEEE, 2008)
    This paper presents the results of our computer simulation for delays experienced by voice packets over WiMAX 802.16e protocol running over an enterprise packet network connected to public internet. In the simulation we ...
  • Analysis of wave structure functions 
    Eyyuboğlu, Halil T. (IEEE, 2008)
    Wave structure function (WSF) of spherical wave is used in extended Huygens-Fresnel integral to induce the effect of turbulent atmosphere on the propagating laser beam. Depending on the approximation made and the choice ...
  • Aperture Averaging of Focused Multi-Gaussian Beams 
    Kamacıoğlu, Canan; Baykal, Yahya; Yazgan, Erdem (Electromagnetics Acad, 2013)
    We investigate the behavior of the power fluctuations of the focused annular and flat-topped beams when a realistic receiver possessing a finite sized aperture is employed in turbulent atmospheric optics links. Employing ...
  • Average received intensity for optical beam of arbitrary field profile after propagation in turbulent atmosphere 
    Arpalı, Çağlar; Baykal, Yahya (Spie-Int Soc Optical Engineering, 2009)
    Employing our previously obtained formulation of the average received intensity for arbitrary optical beam in turbulent atmosphere, intensity patterns of already known and new source profiles are obtained. Arbitrary beam ...
  • Beam Wander Characteristics of Flat-Topped, Dark Hollow, Cos and Cosh-Gaussian, J(0)- And I-0- Bessel Gaussian Beams Propagating In Turbulent Atmosphere: A Review 
    Eyyuboğlu, Halil T.; Baykal, Yahya; Çil, Celal Z.; Korotkova, Olga; Cai,Yangjian (Spie-Int Soc Optical Engineering, 2010)
    In this paper we review our work done in the evaluations of the root mean square (rms) beam wander characteristics of the flat-topped, dark hollow, cos-and cosh Gaussian, J(0)-Bessel Gaussian and the I-0-Bessel Gaussian ...
  • 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 ...
  • 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 ...
  • Cosine-Gaussian laser beam intensity in turbulent atmosphere 
    Eyyuboğlu, Halil T.; Baykal, Yahya (Spie-Int Soc Optical Engineering, 2004)
    The effects of turbulent atmosphere on cosine-Gaussian laser beams are examined. To this end, a cosine-Gaussian excitation is taken at the source plane, and subsequently the average intensity profile at the receiver plane ...
  • Design of irregularly shaped patch antennas by using the multiport network model 
    Şener, Göker; Alatan, Lale; Kuzuoğlu, Mustafa (IEEE, 2008)
  • Developing growing hierarchical structures for decision making 
    Beldek, Ulaş; Leblebicioğlu, Kemal (IEEE, 2007)
    This study is about developing a hierarchical approach for decision-making problems. The development is done on a representative decision-making problem. A hierarchical decision making approach which enables fusion of ...
  • Diffraction properties of partially coherent elegant high-order beam 
    Wang, Fei; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Electromagnetics Acad, 2010)
    The diffraction properties of a partially coherent elegant higher-order beam in free space are investigated in detail. It is found that the diffraction properties of a partially coherent elegant higher-order beam upon ...
  • Dynamics of the D(2)+Ni(100) collision system: Analysis of the reactive and inelastic channels 
    Böyükata, Mustafa; Güvenç, Büşra; Jackson, Bret; Jellinek, Johanna (Wiley-Blackwell, 2001)
    The reactive and scattering channels of the D(2)(v, j) + Ni(100) collision system are studied using quasiclassical molecular dynamics simulations. The interaction between the D(2) and the atoms of the surface is modeled ...
  • Effect of beam types on the scintillations: A review 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Yangjian (Spie-Int Soc Optical Engineering, 2009)
    When different incidences are launched in atmospheric turbulence, it is known that the intensity fluctuations exhibit different characteristics. In this paper we review our work done in the evaluations of the scintillation ...
  • Formulation of scintillations for optical incidence of arbitrary field profile 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Yangjian (Electromagnetics Acad, 2008)
    Scintillation index on the receiver axis is formulated in random medium when an optical source with an arbitrary field profile is employed. To represent the arbitrary source field profile, source is decomposed into pixels ...
  • Hierarchical Control With Partial Observations: Sufficient Conditions 
    Boutin, Olivier; Komenda, Jan; Masopust, Tomas; Schmidt, Klaus Werner; Van Schuppen, Jan H. (IEEE, 2011)
    In this paper, hierarchical control of both monolithic and modular discrete-event systems under partial observations is studied. Two new conditions, called observation consistency and local observation consistency, are ...
  • Hierarchical decision making and decision fusion 
    Beldek, Ulaş; Leblebicioğlu, Kemal (IEEE, 2007)
    In this study, a hierarchical decision making structure possessing a decision fusion technique is proposed in order to solve decision making problems efficiently. The proposed structure mainly depends on effects of the ...
  • Hybrid Single Walled Carbon Nanotube Fets for High Fidelity Dna Detection 
    Wang, Xu; Özkan, Mihri; Budak, Gürer; Güvenç, Ziya B.; Özkan, Cengiz S. (Springer-Verlag Berlin, 2010)
    A novel application for detecting specific biomolecules using SWNT-ssDNA nanohybrid is described. SWNT-ssDNA hybrid is formed by conjugating amino-ended single strand of DNA (ssDNA) with carboxylic group modified SWNTs ...
  • Incoherent sinusoidal-Gaussian and annular beam scintillations 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Yangjian (Spie-Int Soc Optical Engineering, 2008)
    The scintillation index is evaluated in horizontal turbulent atmospheric optical links for incidences of incoherent cosh-Gaussian (IChG), cos-Gaussian (ICG) and annular (IA) beams. Weak turbulence solution is obtained for ...
  • Intensity fluctuations for source arrays in turbulent atmosphere - art. no. 630308 
    Baykal, Yahya (Spie-Int Soc Optical Engineering, 2006)
    Intensity fluctuations are formulated for source arrays in weakly turbulent horizontal atmospheric links. Source array is composed of point sources separated by variable distances in the transverse source directions. Formula ...
  • Intensity fluctuations of focused general-type beams in atmospheric optics links 
    Baykal, Yahya; Eyyuboğlu, Halil T. (Spie-Int Soc Optical Engineering, 2007)
    The intensity fluctuations of focused general-type beams in weakly turbulent atmospheric links are formulated and numerically evaluated. Focused general-type beams in general cover very large range of beams, however in ...