Now showing items 52-71 of 111

  • Generation of optimum signature base sequences for speech signals 

    Yarman, Bekir Sıddık Binboğa; Akdeniz, Rafet (IEEE, 2000)
    In our previous publications [1-6], we proposed a novel method to represent signals in terms of, so called, "Signature Base Functions-SBF' which were extracted from the physical features of the waveform under consideration. ...
  • Gerçel ve karmaşık süzgeç öbeklerinin eşdalgacıklı tasarımı 

    Ateş, Hasan Fehmi; Orchard, Michael T.; Kanberoğlu, Berkay (IEEE, 2006)
    A simple methodology is presented for mapping minimax-optimal, equiripple unconstrained filters such as those produced by the Parks-McClellan algorithm to design equiripple perfect-reconstruction filter banks. The method ...
  • H.264 standardı için süper-çözünürlük tabanlı kodlama yaklaşımı 

    Ateş, Hasan Fehmi (IEEE, 2013)
    In literature video coding efficiency of H. 264 standard has been improved using decoder-side super-resolution (SR). In this paper SR estimation is used during encoding in place of skip/direct mode prediction of H. 264 ...
  • H.264 video kodlamada çerçeve seviyesinde karmaşıklık kontrolü 

    Ateş, Hasan Fehmi; Altunbaşak, Yücel (IEEE, 2007)
    H.264 video coding standard supports several interprediction coding modes that use macroblock partitions with variable block sizes. Unfortunately, searching for optimal motion vectors of each possible partition incurs a ...
  • H.264 vi̇deo kodlamada B-çerçeveler i̇çi̇n kodçözücü tarafında aday devi̇ni̇m vektör seçi̇mi̇ 

    Ateş, Hasan Fehmi; Gaurav, Rahul (IEEE, 2012-04-18)
    In H.264 standard, because of differential coding of motion vectors, sudden motion changes in object boundaries increase the amount of bits used for coding especially at low bitrate regimes. In this paper, we propose a ...
  • Hızlı sönümlemeli kanallarda yeni bir uzay-zaman-frekans kodlamalı OFDM sistem tasarımı 

    Oğuz, Onur; Aygölü, Ümit; Panayırcı, Erdal (IEEE, 2004)
    This work is concerned with a transmitter diversity technique for wireless communications over frequency selective fading channels. The proposed technique utilizes orthogonal frequency division multiplexing (OFDM) to ...
  • Immitance data modelling via linear interpolation techniques 

    Yarman, Bekir Sıddık Binboğa; Aksen, Ahmet; Kılınç, Ali (IEEE, 2002)
    With the advancement of the manufacturing technologies to produce new generation analog/digital communication systems, immitance data modelling has gained renewed importance in the literature. Specifically, models are ...
  • Improving semantic segmentation with generalized models of local context 

    Ateş, Hasan Fehmi; Sünetci, Sercan (Springer International Publishing AG, 2017)
    Semantic segmentation (i.e. image parsing) aims to annotate each image pixel with its corresponding semantic class label. Spatially consistent labeling of the image requires an accurate description and modeling of the local ...
  • Integration of 2D CMUT arrays with front-end electronics for volumetric ultrasound imaging 

    Wygant, Ira O.; Zhuang, Xuefeng; Yeh, David T.; Oralkan, Ömer; Ergün, Arif Şanlı; Karaman, Mustafa; Khuri-Yakub, Butrus T. (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2008-02)
    For three-dimensional (3D) ultrasound imaging, connecting elements of a two-dimensional (2D) transducer array to the imaging system's front-end electronics is a challenge because of the large number of array elements and ...
  • İmge kodlaması için dalgacık paketlerinde küresel gösterim 

    Ateş, Hasan Fehmi; Tamer, Engin (IEEE, 2008)
    In this paper, we present an adaptation of the spherical coder, which has been developed for wavelet transform, to wavelet packets. This coder uses local energy as a direct measure to differentiate the spatial informatin ...
  • Joint ML timing and phase estimation in OFDM systems using the EM algorithm 

    Panayırcı, Erdal; Georghiades, Costas N. (IEEE, 2000)
    In this paper, a computationally efficient algorithm is presented for joint maximum likelihood (ML) timing and carrier phase estimation of OFDM systems employing M-PSK modulation scheme with additive Gauissian noise, based ...
  • Kernel kod-tablosu kodlaması ile sahne etiketleme 

    Ateş, Hasan Fehmi; Sünetci, Sercan (IEEE, 2017)
    Superpixel based methods have recently shown success in scene segmentation and labeling. In scene labeling, a superpixel algorithm is used first to segment the image into visually consistent small regions; then several ...
  • Kernel likelihood estimation for superpixel image parsing 

    Ateş, Hasan Fehmi; Sünetci, Sercan; Ak, Kenan E. (Springer Verlag, 2016)
    In superpixel-based image parsing, the image is first segmented into visually consistent small regions, i.e. superpixels; then superpixels are parsed into different categories. SuperParsing algorithm provides an elegant ...
  • A low loss, low voltage and high Q active inductor with multi-regulated cascade stage for RF applications 

    Momen, Hadi Ghasemzadeh; Yazgı, Metin; Köprü, Ramazan (Institute of Electrical and Electronics Engineers Inc., 2015-12-06)
    Numerous structural planning of active inductors have been proposed as of not long ago in literature which showing tuning conceivable outcomes, low chip area and offering integration facility, they constitute promising ...
  • A method for low-pass filter designing by commensurate transmission lines 

    Köprü, Ramazan; Momen, Hadi Ghasemzadeh (IEEE, 2016)
    It is well known that the complex Richards-Plane is a transformed domain of Laplace-Plane which is obtained under a tangent hyperbolic mapping. Network functions generated in terms of Richards's frequency are periodic in ...
  • Microwave amplifier design for mobile communication via immittance data modelling 

    Kılınç, Ali; Pınarbaşı, Hacı; Yarman, Bekir Sıddık Binboğa; Aksen, Ahmet (IEEE, 2003)
    In this paper, a practical broadband microwave amplifier design algorithm based on immittance data modelling is presented. In the course of design, first, the optimum input and output terminations for the active device are ...
  • MIMO sinyalleri için uzay-zaman blok kodu klasifikasyonu 

    Öner, Mustafa Mengüç; Turan, Merve; Çırpan, Hakan Ali (IEEE, 2014-04-26)
    Signal identification techniques developed for the purpose of blind and noncooperative identification of the transmission parameters of unknown communication signals have been employed both in military and civilian ...
  • Mixed element wideband microwave amplifier design via simplified real frequency technique 

    Kılınç, Sedat; Köprü, Ramazan; Aksen, Ahmet; Yarman, Bekir Sıddık Binboğa (IEEE Computer Society, 2014-12-12)
    In this study, we illustrate the design and implementation of a wideband microwave small-signal amplifier composed of mixed elements. The design is based on Simplified Real Frequency Technique (SRFT). A design of low power ...
  • Multiband and concurrent matching network design via brune sections 

    Yıldız, Serkan; Aksen, Ahmet; Binboğa Yarman, Bekir Sıddık (IEEE, 2017)
    A general multiband matching network design methodology for complex load impedance terminations is presented. In the proposed approach, Real Frequency Techniques (RFT) are used to define and optimize the multiband matching ...
  • Multiband matching network design via transformation based real frequency approach 

    Yıldız, Serkan; Aksen, Ahmet; Yarman, Bekir Sıddık Binboǧa (IEEE, 2016)
    In this paper, a new method is presented for multiband matching network design. Low pass to band pass (LP-BP) frequency transformation is incorporated with the parametric Real Frequency Technique (RFT) for creating multiband ...