Browsing M.S. Theses by Issue Date

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  • 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 ...
  • 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 ...
  • 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 ...
  • 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), ...
  • 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 ...
  • 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 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 ...
  • 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 ...
  • 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 ...
  • Implementation and performance evaluation of sigma-delta modulators 
    Sağlamdemir, Muharrem Orkun. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    SigmaDelta A/D converters have recently become popular since they achieve high resolution by means of oversampling without the need of high accuracy matching of elements and complex analog circuitry. They even reach higher ...
  • Digital filter design, error modeling and error correction in sigma-delta modulators 
    Genç, Necmiye. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Modern electronic systems that are used in computers, automotive, communication, etc., are mostly mixed-signal systems. To implement mixed-signal systems, it is necessary to convert analog signals into the digital domain ...
  • Current mode continuous time sigma delta converter design 
    Yapar, Ufuk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Most sigma delta modulators are realized in the discrete-time domain using circuit techniques such as switched capacitor. In typical discrete time implementations, there are some speed constraints. For example, maximum ...
  • Estimation of basın detection and representation from non-linear system data 
    Habiboğlu, Mehmet Gökhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, we are interested in a good qualititive representation of a nonlinear autonomous flow. It is assumed that the equations governing a given nonchaotic nonlinear autonomous flow are unknown. The only prior ...
  • Maximum entropy estimated payload based intrusion detection system "the me-payl" 
    Erhan, Derya. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Computer Networks can be considered as an important component of today’s human life. Since data and information of various organizations are transferred through private and public networks such as the global internet, ...
  • Domain-specific keyword spotting 
    Haznedaroğlu, Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In large vocabulary continuous speech recognition based keyword spotting applications, language modeling directly affects the system performance. In this study, a keyword adapted language model is proposed and a Turkish ...
  • An automatic architecture generator for sigma-delta modulators considering component non-idealities 
    Yetik, Ömer. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, a tool generated in MATLAB environment for automatic modeling and architecture synthesis of sigma-delta modulators is introduced. The tool is capable of generating the parametric signal and noise transfer ...
  • Simulated and experimental study of antilock braking system using grey sliding mode control 
    Oniz, Yesim. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Antilock Braking System (ABS) is an electronically controlled system that prevents the wheels from locking by limiting the pressure delivered to each slave cylinder of the vehicle. By preventing lock up, ABS gives the ...
  • Analysis of the compression techniques and memory bit effects on compression for pseudo-random generation 
    Seren, Ümit. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Compression of sequence is one of the most useful tools for strengthening the pseudo-random generators used in stream ciphers. Using compression components can prevent algebraic attacks against LFSR-based stream ciphers. ...
  • Analog CMOS implementation of neuro-fuzzy systems 
    Sarıoğlu, Baykal. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, a novel neuro-fuzzy system presented and implemented in analog CMOS. The system is based on the fact that a rule in a zero order TSK fuzzy system can be represented as an area on an input space which is ...
  • Yet another simulation based sensitivity analysis tool for analog layout generation 
    Şen, Taşkın. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this thesis, a high performance and flexible analysis tool is presented for computing the sensitivities of performance measures of analog integrated circuits to the parasitic effects that are introduced during layout ...

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