Elektrik- Elektronik Mühendisliği: Recent submissions

  • 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 ...
  • Computer-aided transcription tool 
    Akman, Çağdaş Kayra. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    State-of-the-art speech recognition and language processing systems widely use data-driven methods. These methods require large transcribed speech and annotated text corpora. The success of these systems greatly depends ...
  • High performance adaptive sigma delta modulator designs 
    Gökdel, Yiğit Dağhan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this work two different solutions to the saturation problem of the integrator building block of Sigma Delta modulators are presented. Saturation causes an error that limits the dynamic input range of the Sigma Delta A/D ...
  • Adaptive neuro fuzzy inference systems (ANFIS) approach for autonomous flight control of unmanned aerial vehicles 
    Eriş, Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    This thesis concentrates on an ANFIS based, autonomous flight controller that has generalization capability, for UAVs (Unmanned Aerial Vehicle). Three different ANFIS modules are developed in order to control of the altitude, ...
  • 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 ...
  • 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 ...
  • 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 ...
  • A combined wavelet and auyoregressive based statistical intrusion detection system "the wavelet-AR IDS" 
    Güven, Umut. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Networks are complex interacting systems and are comprised of several individual entities such as routers and switches. Network performance information is not directly available, and the information obtained must be ...
  • Control of chaotic systems with time delayed feedback control 
    Yakar, Engin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Delayed Feedback Control (DFC) method proposed by Pyragas is a simple and efficient method to control chaotic systems by stabilizing the Unstable Periodic Orbits (UPOs) of these systems. Assuming that a UPO with period T ...
  • 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 ...
  • A dynamically clock-controlled binary stream cipher with memory and dynamic multiplexing "the mono stream cipher" 
    Uzun, Orçun. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    Streams ciphers are appropriate for high speed encrypted communications because this type of ciphers provide high output speed and ease of implementation in hardware. Generally, stream ciphers makes use of Linear Feedback ...
  • 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 ...
  • 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. ...
  • A study of infrared principles with emphasis on thermal detection 
    Demirelli, Atanur. (Thesis (M.S.) - Robert College. Faculty of Graduate School of Engineering, 1969., 1969.)
    A survey of infrared principles is given in an attempt to determine the factors effecting the performance of infrared detection system. Various detection phenomena are discussed in a comparative manner. A full treatment ...
  • 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 ...