Now showing items 36-55 of 89

    • Four-quadrant switch-mode gyrator 

      Dinçbakır, Cenk; Bilgiç, Mehmet Oruç (IEEE, 2008-05-23)
      A gyrator design based on an inductor coupled double bridge converter is presented. It is shown that this gyrator can operate in four-quadrant mode by using bi-directional MOS switches without the necessity of any feedback ...
    • Frequency estimation for monophonical music by using a modified VMD method 

      Öztürk Şimşek, Berrak; Akan, Aydın (IEEE, 345 E 47Th St, New York, Ny 10017 USA, 2017)
      In this paper, a new Variational Mode Decomposition (VMD) is introduced, and applied to the fundamental frequency estimation of monophonical Turkish maqam music. VMD is a method to decompose an input signal into an ensemble ...
    • Fundamental frequency estimation for heterophonical Turkish music by using VMD 

      Unknown author (IEEE, 345 E 47th St, New York, Ny 10017 USA, 2016)
      In this study, a new method is presented for the fundamental frequency estimation of heterophonical Turkish makam music recordings that include percusssive instrument by using Variational Mode Decomposition (VMD). VMD is ...
    • Fundamental Frequency Estimation for Monophonical Turkish Music by using VMD 

      Öztürk Şimşek, Berrak; Akan, Aydın; Bozkurt, Barış (IEEE, 345 E 47Th St, New York, Ny 10017 USA, 2015-05-16)
      In this study, a new method is presented for the fundamental frequency estimation of Turkish makam music recordings by using Variational Mode Decomposition (VMD). VMD is a method to decompose an input signal into an ensemble ...
    • Fuzzy logic based control of switched reluctance motor to reduce torque ripple 

      Derdiyok, A.; İnanç, N.; Özbulur, Veysel; Pastacı, Halit; Bilgiç, Mehmet Oruç (IEEE, 1997)
      This paper presents torque ripple reduction of a switched reluctance motor (SRM) by using a fuzzy speed controller. For this purpose, current control is applied with a fuzzy speed controller. The fuzzy controller adjusts ...
    • Generalised prefix for space-time block-coded orthogonal frequency division multiplexing wireless systems over correlated multiple-input multiple-output channels 

      Yıldız, Hakan; Acar, Yusuf; Cooklev, Todor; Doğan, Hakan (Inst Engineering Technology-Iet, Michael Faraday House Sıx Hılls Way Stevenage, Hertford Sg1 2Ay, England, 2014-06-12)
      Space-time block coding (STBC) orthogonal frequency division multiplexing (OFDM) is known to improve the reliability of broadband communication over wireless links. However, this technique suffers from a performance loss ...
    • Generalized Gauss Distribution Noise Model for Respiratory Parameter Estimation 

      Saatçı, Esra; Akan, Aydın (Ieee, 345 E 47Th St, New York, Ny 10017 Usa, 2009)
      In this studs, measurement noise is modelled as a Generalized Gauss Distribution and a new method is presented to estimate the model parameters. The estimator algorithm consists of the Kurtosis method, Kalman iterarions ...
    • Generalized Prefix Approach for Alamouti Coded OFDM Systems over Gaussian Channels Correlated in Space 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      In this ivorkt, generalized frelix (GP) lbr space time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems is considered in the presence of correlated channel. The 2x2 STBC case, in practice, lead ...
    • Graphene actively Q-switched lasers 

      Li, Diao; Xue, Hui; Qi, Mei; Wang, Yadong; Akşimşek, Sinan; Chekurov, Nikolai; Kim, Wonjae; Li, Changfeng; Riikonen, Juha; Ye, Fangwei; Dai, Qing; Ren, Zhaoyu; Bai, Jintao; Hasan, Tawfique; Lipsanen, Harri; Sun, Zhipei (2017-05-05)
      Graphene electro-optic modulators (GEOMs) are emerging as a viable alternative to conventional material-based modulators mainly due to their broadband and ultrafast performance. These GEOMs with combined advantages of small ...
    • Graphene-MoS2-Metal Hybrid Structures for Plasmonic Biosensors 

      Akşimşek, Hüseyin Sinan; Jussila, Henri; Sun, Zhipei (Elsevier, 2018-12-01)
      Surface Plasmon Resonance (SPR) biosensors are widely used for real-time label-free detection in medical diagnostics, pharmaceutical researches and food safety. Although there is a growing interest in miniaturization of ...
    • Heart sound localization and reduction in tracheal sounds by gabor time-frequency masking 

      Saatçı, Esra; Akan, Aydın (Istanbul Unıv, Fac Engineering, Elektrik-Elektronik Mühendisliği Bölümü, Avcılar Kampüsü, İstanbul, 34320, Turkey, 2017)
      Respiratory sounds, i.e. tracheal and lung sounds, have been of great interest due to their diagnostic values as well as the potential of their use in the estimation of the respiratory dynamics (mainly airflow). Thus the ...
    • High-Performance Mimo Ofdm Wireless Systems With Generalized Prefix 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013)
      Consumers require increasing data rates and therefore it is important to develop techniques that increase the spectrum efficiency. MIMO OFDM is a fundamental technology for high data rate wireless systems. Correlation among ...
    • Improving performance of switched reluctance motor by fuzzy logic controller 

      Derdiyok, A.; Inanc, N.; Özbulur, Veysel; Bilgiç, Mehmet Oruç (1999-04)
      This paper presents torque ripple minimization of a switched reluctance motor (SRM) by using a fuzzy controller, The nonlinear model of the SRM and the mathematical model of the converter circuit are driven. The motor used ...
    • Internet Addiction Research in The School of Vocational Studies: Evidence from Turkey 

      Kurt, Doğuş; Tekin, Abdulkadir (Int Scientific Conference SGEM, 14, Kilment Ohridsky BLVD, Sofia, 1797, Bulgaria, 2008)
      As a growing trend in the world, internet-based remote education both in governmental and private education institutes is getting popular in Turkey as it is to be all over the world. Internet-based education models give ...
    • Interpolation based pilot-aided channel estimation for STBC spatial modulation and performance analysis under imperfect CSI 

      Acar, Yusuf; Doğan, Hakan; Başar, Ertuğrul; Panayırcı, Erdal (INST Engineering Technology-Iet, Michael Faraday House Six Hills Way Stevenage, Hertford Sg1 2Ay, England, 2016-09-20)
      A combination of space-time block coding and spatial modulation (STBC-SM) has been recently proposed for multiple input-multiple output systems to obtain both spatial diversity gain and more capacity simultaneously while ...
    • Inverse Dual Converter (IDC) for High Power DC-DC Applications 

      Ehsani, Mehrdad; Husain, Iqbal; Bilgiç, Mehmet Oruç (IEEE, 1990)
      The inverse dual converter (IDC), suitable for high-power DC-DC conversion applications, is presented. The IDC is a voltage source converter with an AC link and has been derived from an inductor converter bridge. This ...
    • Inverse dual converter (IDC) for high power DC-DC applications 

      Ehsani, M.; Husain, I.; Bilgiç, Mehmet Oruç (IEEE, April 1993)
      A family of DC-DC converters suitable for high-power applications is introduced. The inverse dual converter (IDC) is capable of continuous voltage step-up or step-down control over a wide range of and without the need of ...
    • Inverse Modeling of Respiratory System during Noninvasive Ventilation by Maximum Likelihood Estimation 

      Saatçı, Esra; Akan, Aydın (Hindawi Publishing Corporation, 410 Park Avenue, 15Th Floor, #287 Pmb, New York, Ny 10022 Usa, 2010)
      We propose a procedure to estimate the model parameters of presented nonlinear Resistance-Capacitance (RC) and the widely used linear Resistance-Inductance-Capacitance (RIC) models of the respiratory system by Maximum ...
    • Iterative Channel Estimation For Spatial Modulation Systems Over Fast Fading Channels 

      Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      Spatial Modulation (SM) based on the use of antenna indices to transmit information in addition to the conventional signal constellations has been recently proposed to solve practical problems encountered in MIMO systems. ...
    • Low Cost Maximum Power Point Tracking Method For Solar Battery Charging 

      Koral, Ahmet Can; Gürkan, Güray; Bilgiç, Mehmet Oruç (IEEE, 2013-09-25)
      In this paper, we propose a low cost charger circuit with a maximum power point tracking method (MPPT) that is a key factor in photovoltaic systems. The solar panel output voltage, which is known to be generated by series ...