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Browsing Elektrik- Elektronik Mühendisliği by Issue Date

Browsing Elektrik- Elektronik Mühendisliği by Issue Date

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  • Inter-cell interference coordination in OFDMA networks: two autonomous-distributed algorithms 
    Gök, Alican. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In OFDMA cellular networks, inter-cell interference hinders system performance, especially for users located at the cell edges. Inter-cell interference coordination (ICIC) techniques have been investigated by both the ...
  • Wireless and batteryless instant velocity sensor for certain daily motions 
    Arıcıoğlu, Burak. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The miniaturization studies in both integrated circuits (IC) and microelectromechanical systems (MEMS) have made it possible to have electronic systems that can operate with very low power. Sensors that are used for ...
  • Distributed detection and decision fusion using particle filter concepts 
    Mamıkoğlu, Umut. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, a distributed detection and decision fusion system that operates under non Gaussian noise with unknown parameters is developed. The main objective is to nd decision rules for the local detectors and the ...
  • Convergence rate analysis and optimization of distributed consensus algorithms 
    Cihan, Onur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The problem of achieving a common value in a distributed information sharing context, referred to as distributed consensus or agreement, is an important topic that has drawn significant research attention of late. Consensus ...
  • Design of the analog blocks used in a field programmable mixed array (FPMA) in 90-NM CMOS technology 
    Sarrafinezhad, Ata. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The miniaturization trend in electronic circuits enforces integrating analog and digital circuits in a System On a Chip (SOC) solution, reviving a renewed interest in Field Programmable Mixed Arrays (FPMA). This approach ...
  • Spatial modulation MIMO systems with dual-polarized antennas 
    Zafari, Golara. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In wireless communication systems, multiple-input multiple-output (MIMO) systems have been widely used during the past decades to achieve better performance. However, there is an inevitable issue due to the usage of ...
  • Design of low power continuous time analog to digital converters 
    Parasnejad, Sina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    A second order CT modulator for audio frequency sensory systems in 180nm TSMC CMOS process is presented. The design incorporates a C-gm based current mode structure with 2nd order noise shaping, a 25 kHz bandwidth, a ...
  • A decision tree based intrusion detection system with bootstrap aggregating, discretization, and feature selection 
    Özdemir, Seray. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, many machine learning techniques which are used for network intrusion detection are analyzed in detail. An intrusion detection system based on a combination of bootstrap aggregating, discretization, feature ...
  • Automatic topic categorization of Turkish Faxed Bank documents in the presence of OCR errors 
    Öztürk, Seçil. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The technological advances in the last decades facilitated the easy transfer and storage of huge amounts of scanned soft documents. This improvement brings the challenge of automatically classifying big, unbalanced, ...
  • An analog template router based on layout description script (LDS) 
    Sümengen, Cem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Long design-test cycles in full-custom design process leads to high design costs in analog circuit design. The objective of design automation is to decrease the design cost and the time to market by reducing the time spent ...
  • Active packet filtering against DDoS attack 
    Seifpoor, Tina. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Distributed Denial of Service (DDoS) attacks are one of the dominant and persistent threats to the security of the Internet nowadays. The aim of these attacks are mainly resource or the bandwidth consumption with enormous ...
  • Design aspects of discrete time chaos based true random number generators 
    Çiçek, İhsan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, design aspects of discrete time chaos based cryptographic grade TRNGs are studied starting from chaotic map equations to in depth analyses of the generated entropy. Custom mathematical models of discrete ...
  • TYPE-4 fuzzy clustering for fuzzy modeling applications 
    Aras, Ayşe Çisel. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this study, a novel approach is described to the design of an interval type- 2 fuzzy neural system (IT2 FNS). It differs from the classical IT2 FNS in its use of parameterized conjunctors. In the optimization of the IT2 ...
  • Realization and analysis of high performance physical unclonable functions based on ring oscillators 
    Kömürcü, Giray. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Physical Unclonable Functions (PUFs) are powerful techniques that are proposed recently to address security related problems. They have a wide range of applications including cryptographic key generation and storage, ...
  • Development of new learning algorithms for spiking neural networks 
    Öniz, Yeşim. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The main shortcomings with the gradient descent-based learning algorithms used for neural networks are that the convergence speed is relatively slow and the algorithm can be easily trapped into a local optimum. The studies ...
  • Fabrication and characterization of a planar water gated transistor utilizing ultra thin single crystalline silicon film 
    Ertop, Ozan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, the fabrication and characterization of a planar water-gated thin lm transistor are explained and analyzed. Silicon-on-insulator (SOI) wafer is used to build the device. Two di erent gate structures are ...
  • Low power continuous time sigma delta modulator and decimation filter design 
    İnce, Mehmet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Sigma Delta analog to digital converters (ADC) are widely used in areas where high resolution is needed. Audio applications are one of these areas. Along with high resolution, reducing the power consumption of an ADC is a ...
  • DDoS attack detection using frequency domain characteristics 
    Fouladi, Ramin Fadaei. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Providing 24-hour service to the users, is one of the major concerns of network administrators. A denial of service attack refers to a condition that a server cannot give normal services to its legitimate clients due to ...
  • Ring oscillator based randon number generators 
    Güler, Ülkühan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    System-on-a-chip solutions require hardware based integrated circuit (IC) random number generator (RNG) for trustworthy transmission of information. Fully digital gate based IC RNGs became popular because of their uncomplicated ...
  • Evaluation of 2D local image descriptors and feature encoding methods for depth image based object class recognition 
    Kayım, Güney. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    In this thesis, we have investigated the 3D object class recognition problem. We used an approach that solves this problem with the use of depth images obtained from 3D object models. In the approach we used, 3D object ...

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