M.S. Theses: Recent submissions

  • A new nonlinear combination generator "myboun" 
    Özgan, Meltem Doğaner. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In cryptographic systems, usually linear feedback shift register based keystream generators are used because of the fact that they can produce sequences with large period, good statistical properties. They are suitable for ...
  • Analog layout generation 
    Yılmaz, Ender. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this work an analog layout automation tool, ALGv3, is presented. ALGv3 is successor of ALGv2, which was also designed at Bogazici University. ALGv3 is composed of four parts; module generator, partitioner, placer and ...
  • Source separation of seismological signals using blind deconvolution and independent component analysis techniques 
    Kılıç, Yalçın. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Blind source separation and independent component analysis techniques have been implemented in many fields to analyze signals, in order to reveal the hidden factors and components that underlie. Analyzing some basic problems ...
  • An irregular clock-controlled binary stream cipher with nonlinear feedback shift registers "the safe stream cipher" 
    Arslan, Serhat Eren. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Stream ciphers are one of the most important classes of encryption algorithms used to ensure security in digital communication. The design of many stream ciphers is based on use of Linear Feedback Shift Registers (LFSRs), ...
  • Blind Bayesian multiuser detection for impulse radio UWB systems 
    Ay, Ahmet Gökhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    In this thesis, we address the blind parameter estimation and multiuser de- tection problems for impulse radio ultra-wide band (UWB) systems under frequency selective fading. The frequency selective UWB channel, having a ...
  • Power analysis and low power realization of digital filter structures 
    Batur, Okan Zafer. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Digital Filters are important for Digital Signal Processing (DSP) systems. They are widely used in image, speech processing, data transmission. Digital Filters can be used to reduce noise in the system, get information ...
  • Design of a continuous-time current-mode sigma-delta analog-to-digital converter 
    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 ...
  • A new irregular clocked linear feedback shift register based stream cipher "go" 
    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 ...
  • A survey of superconductivity 
    Uluğ, Yusuf. (Thesis (M.S.)- Robert College. Faculty of Graduate School of Engineering, 1969., 1969.)
  • Voice driven keyword spotter 
    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 ...
  • Analog design and optimization of PWL circuits used in fuzzy logic solutions 
    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. ...
  • A novel sonar development platform: dual frequency sonar beam shaping for angular localization 
    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 ...
  • Audio source separation with convolutively mixed signals 
    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 ...
  • Radar cross section of arbitrary shared multilayered objects 
    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 ...
  • Time of arrival estimation with music under impulsive noise 
    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 ...
  • The design principles of linear feedback shift register based clock controlled stream ciphers 
    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), ...
  • A new real-time time memory trade-of attack on A5/ 1 stream ciphers using "peculiar events" 
    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 ...
  • A synthesizable core generator design in VHDL for the motorola 68XXX family of microprocessors 
    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 ...
  • Investigation of the most suitable location finding techniques for Istanbul in GSM1800 network 
    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 ...
  • Comparison of multicarrier CDMA with successive interference cancellation and interference cancellation with gibbs sampler 
    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 ...

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