Browsing by Author "Uğurdağ, Hasan Fatih"
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A 1GS/S, 9-BIT DAC I interleaved (2+1)-bit then 2-bit per cycle, reference free SAR ADC
El-Sawy, Salma H. (2019-01-02)This work presents a high speed, medium resolution Successive Approximation Register Analog to Digital Converter (SAR ADC) designed for low-noise, low- power satellite transceiver applications. The proposed system is a ... -
25th IFIP/IEEE conference on very large scale integration (VLSI-SoC 2017)
Elfadel, I. A. M.; Uğurdağ, Hasan Fatih (IEEE, 2018-02)The 25th IFIP/IEEE Conference on Very Large Scale Integration (VLSI-SoC 2017) was held between 23 and 25 October in the landmark Yas Viceroy Hotel, overlooking the Formula 1 Yas Marina racetrack in Yas Island, Abu Dhabi, ... -
An area efficient real time implementation of dual tree complex wavelet transform in field programmable gate arrays
Canbay, F.; Levent, Vecdi Emre; Serbes, G.; Uğurdağ, Hasan Fatih; Goren, S.; Aydin, N. (IEEE, 2015)Biomedical signals (BSs), which give information about the normal condition and also the inherent irregularities of our body, are expected to have non-stationary character due to the time-varying behavior of physiological ... -
Automated refinement of models for model-based testing
Gebizli, Ceren Şahin (2017-07)Model-Based Testing (MBT) enables automatic generation of test cases based on models of a system. It has been successfully applied in various application domains, each of which might introduce specific challenges. In this ... -
Blood coagulation time measurements using 400 MHz thickness mode resonator
Majidi, Negar (2018-08)This thesis presents a novel blood coagulation time measurement methodology which requires as low as 1 L of whole blood. The method performs measurements using whole blood without plasma separation. In this regard, the ... -
Channel modeling and characterization for visible light communications: indoor, vehicular and underwater channels
Miramirkhani, Farshad (2018-06)Despite the increasing attention on visible light communications (VLC) systems, there is a lack of proper visible light (VL) channel models. This is a serious concern since channel modeling is the very first step for ... -
Colour gamut enhancement with remote light conversion mechanism
Sezer, Yusuf Sinan (2018-01)The colour gamut of liquid crystal displays (LCDs) depends on the backlight unit spectrum. For the light emitting diode (LED) based backlight units, either phosphors or quantum dots are used to convert the blue light of ... -
Combined AES + AEGIS architectures for high performance and lightweight security applications
Şahin, Furkan; Uğurdağ, Hasan Fatih; Yalçın, T. (Springer International Publishing, 2014)AES has been the prominent block cipher since its introduction as the standard. It has been the cipher used in almost all new applications that require solid, unbreakable security with reasonable resource usage. Several ... -
Cost-benefit approach to degradation of electrolytic capacitors
Kirişken, B.; Uğurdağ, Hasan Fatih (IEEE, 2014)Aluminum electrolytic capacitors are widely used as a filter or bulky capacitor after rectification stages of switching power supplies (SMPS). Fly-back, forward, and resonant converter topologies, which are widely used in ... -
CPU design simplified
Yıldız, A.; Uğurdağ, Hasan Fatih; Aktemur, Tankut Barış; İskender, Deniz; Gören, S. (IEEE, 2018-12-10)The first goal of this paper is to introduce a simple and customizable soft CPU named VerySimpleCPU (VSCPU), which could be easily implemented on FPGAs with a complete toolchain including instruction set simulator, assembler, ... -
Crucial topics in computer architecture education and a survey of textbooks and papers
Yıldız, A.; Gören, S.; Uğurdağ, Hasan Fatih; Aktemur, B.; Akdoğan, Taylan (International Association of Engineers, 2020)We have been teaching undergraduate computer architecture since 2012 in an unconventional way. Most undergraduate computer architecture courses are based on microprocessors, and they quickly move into advanced topics such ... -
Darbe i̇şaretleri̇ i̇çi̇n aşırı-hızlı FPGA tabanlı eǧri̇ beti̇mlenmesi̇
Başaran, A.; Uğurdağ, Hasan Fatih; Akdoğan, T.; Güney, V. U.; Gören, S. (IEEE, 2012)Bu çalışmada anlatılan donanım 1.5 GHz Analog-Sayısal- Çevirici’den gelen darbe işaret dizisini işleyebilmekte ve darbe işaretlerini genlik, yükselme/düşme süresi ve varış zamanı parametreleriyle özetleyebilmektedir. Söz ... -
Defect-aware nanocrossbar logic mapping through matrix canonization using two-dimensional radix sort
Gören, S.; Uğurdağ, Hasan Fatih; Palaz, O. (ACM, 2011-08)Nanocrossbars (i.e., nanowire crossbars) offer extreme logic densities but come with very high defect rates; stuck-open/closed, broken nanowires. Achieving reasonable yield and utilization requires logic mapping that is ... -
Design and construction of the fundamental tools for single atom experiments
Neutral atoms are one of the most promising systems for quantum information and quantum engineering, in general. Full and efficient control over cold atoms and their interactions with light has been a challenging and ... -
Design and simulation of an optimal energy management strategy for plug-In electric vehicles
Gözüküçük, M. A.; Akdoğan, Taylan; Hussain, Waqas; Tasooji, Tohid Kargar; Şahin, Mert; Çelik, M.; Uğurdağ, Hasan Fatih (IEEE, 2018)Energy management algorithms play a critical role in improving the energy efficiency of modern electric vehicles. In order to be desirable for the customer, electric vehicles should be capable of long distance driving on ... -
Design of high gain wideband quad-ridged horn antenna for emc testing
Solak, Bekir (2017-06)This thesis presents a design and simulation of high gain wideband quad-ridged circular horn antenna for Electromagnetic Compatibility (EMC) testing. The selected operating frequency range of the antenna is from 1 GHz to ... -
Development of an accelerated Monte Carlo ray tracing based radiation heat transfer solver
Siddiqui, Faizan Pervez (2017-07)The Monte Carlo ray tracing (MCRT) is a semi-analytical stochastic method for the solution of radiative transfer equation (RTE). However, its high computation cost prevents its extensive use. In this study, an accelerated ... -
An efficient algorithm for disparity map compression based on spatial correlations and its low-cost hardware architecture
This thesis proposes a low-cost Disparity Map (DM) compression algorithm and its hardware architecture for high resolution and high frame rate applications, where limited computational capacity and power consumption make ... -
An efficient algorithm for disparity map compression based on spatial correlations and its low-cost hardware architecture
Ghanim, Mustafa; Tasdizen, O.; Uğurdağ, Hasan Fatih; Hamzaoğlu, İlker (Elsevier, 2023-11)This paper proposes a low-cost disparity map compression algorithm and its hardware architecture for high resolution and high frame rate applications. The proposed algorithm uses spatial correlations between neighboring ... -
Efficient combinational circuits for division by small integer constants
Uğurdağ, Hasan Fatih; Bayram, A.; Levent, Vecdi Levent; Gören, S. (IEEE, 2016)Division of an integer by an integer constant is a widely used operation and hence justifies a customized efficient implementation. There are various versions of this operation. This paper attacks a particular version of ...
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