Elektrik- Elektronik Mühendisliği: Recent submissions

  • Çitkaya, Ahmet Yasin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The importance of the Analog-to-Digital converters (ADC) is increasing due to the necessity of an interface between the analog and digital world where computing and signal processing are executed. Over the last years, their ...
  • Çetiner, Gökçe. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Stream ciphers are an important class of encryption algorithms. They encrypt individual characters (usually binary digits) of a plaintext message one at a time, using an encryption transformation which varies with time. A ...
  • Uluğ, Yusuf. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1969., 1969.)
  • Çengelci, Onur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    We designed a voice driven keyword spotter. To improve the success of the system, we made use of synthetically generated voice inputs in addition to natural voice inputs and used approximate string matching instead of exact ...
  • Yalçın, Yankı. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Neural networks are widely used in all branches of life such as system identification, decision support and control where systems are designed to be working as human brain and make decisions like the way human beings do. ...
  • Karadeniz, Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This thesis presents a complete airborne ultrasound system inspired by both underlying physics and biological sonar. First, a completely new hardware platform is designed and developed. This design supports an extendible ...
  • Başaran, Doğaç. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    In this thesis, we addressed the problem of audio source separation of convolutivelymixed signals using microphone arrays. Independent Component Analysisis a major statistical tool for solving this problem. In real room ...
  • Küstür, Sabri. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This thesis is about Radar Cross Section (RCS) of arbitrary shaped multilayered objects. Arbitrary shaped objects have an important place in the study and application of Radar technologies. Aircrafts, missiles, vegetation ...
  • Hacıoğlu, İsa. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    With the emergence of micro and nano technologies, the context-aware wirelesscommunications applications have been spreading. Especially, location-awareness hasgained significance recently. The TOA estimation have been ...
  • Ergüler, İmran. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Stream ciphers are one of the most important classes of encryption algorithms usedto ensure security in digital communication. The design of many stream ciphers is based onuse of Linear Feedback Shift Registers (LFSRs), ...
  • Yazgan, Onur. (Thesis (M.S)-Bogazici University.Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    In this paper, we describe a new real-time attack on A5/1 stream ciphers thatachieves superior performance in terms of lower computation time and calculation complexity compared to most of the previous attacks of similar ...
  • Bürümcek, Alper. (Thesis (M.S)-Bogazici University.Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    The goal of this project is to implement a core generetor to create a Motorola68000 op-code compatible microprocessor capable of being synthesized using FPGA. The CPU is specified fully in VHDL and is designed to emulate ...
  • Çelik, Veli Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Although there isn’t yet a successful deployment of a Location Services among the existing worldwide operators, locating the subscriber is still appealing, thus there are many ongoing studies on the topic. While locating ...
  • Yılmaz, Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Recently Orthogonal Frequency Division Multiplexing (OFDM) has gained a lot ofattention and is the technology for Fourth Generation (4G) wireless systems because itpromises data rates up to 100 Mbps. A variation of OFDM ...
  • Göktuna, Erol. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1969., 1969.)
    The aim of this report is to investigate dielectric behavior at weak electric field. The behavior of permittivity, a defining property of dielectric materials, at weak fields is mostly discussed. The theoretical approach ...
  • Erdoğan, Erdem Serkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    In this thesis, the design of a current follower (CF) starting from the building stages as input, inversion and output, is presented together with the newly proposed circuit techniques to improve the performance of the CF ...
  • Ak, Şeref Ersin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    Phase Locked Loops (PLLs) are extensively used in microprocessors and digital signal processors for clock generation and as frequency synthesizers in RF communication systems for clock extraction and generation of a low ...
  • Akgül, Ceyhun Burak. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    In recent years, positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) have facilitated the monitoring of the human brain non-invasively, during functional activity. Nevertheless, the use of ...
  • Güney, Nazlı. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2003., 2003.)
    Object recognition is one of the biggest problems in computer vision. In order to be able to solve this problem, many methods have been tried in the past. Wavelets, which have successfully been used in such areas as image ...
  • Dikici, Çağatay. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2004., 2004.)
    Attentive robots, inspired by human-like vision - are required to have visual systems with fovea-periphery distinction and saccadic motion capability. Thus, each frame in the incoming image sequence has nonuniform sampling ...

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