Browsing by Author "Uğurdağ, Hasan Fatih"
Now showing items 41-60 of 95
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FPGA implementation of OFDM based VLC
This thesis presents the Field Programmable Gate Array (FPGA) based implementation of Orthogonal Frequency Division Multiplexing (OFDM) for a Visible Light Communication (VLC) System. This happens to be the Single-Input ... -
FPGA-based minimal Latency HEFT scheduler for heterogeneous computing
Aliyev, Ilkin; Mack, J.; Kumbhare, N.; Akoglu, A.; Uğurdağ, Hasan Fatih (IEEE, 2021)This paper proposes a new hardware scheduler. As heterogeneous computing becomes prevalent, mapping applications on to multiple processing elements (PEs) proves to be nontrivial. Heterogeneous Earliest Finish Time (HEFT) ... -
Generating fast logic circuits for m-select n-port round Robin arbitration
Uğurdağ, Hasan Fatih; Temizkan, F.; Gören, S. (IEEE, 2013)This paper generalizes the problem of Round Robin Arbitration (RRA) from 1-select to m-select (mRRA) and offers new circuit architectures for it. RRAs are found in networking equipment and computer systems with high ... -
Hardware division by small integer constants
Uğurdağ, Hasan Fatih; Dinechin, F. de; Gener, Y. S. (IEEE, 2017-12)This article studies the design of custom circuits for division by a small positive constant. Such circuits can be useful for specific FPGA and ASIC applications. The first problem studied is the Euclidean division of an ... -
Hardware implementation of field oriented control for three phase machine drives
Tüfekçi, B.; Önal, B.; Önal, H.; Uğurdağ, Hasan Fatih (IEEE, 2020-10-05)This paper presents a high switching frequency FPGA implementation of Maximum Torque Per Ampere (MTPA) and Flux Weakening which are branch of Field Oriented Control (FOC) method for 3-phase machine drives. A common ... -
HC-FFT : highly configurable and efficient FPGA ımplementation of FFT
Ergül, Pakize (2021-01-14)Fast Fourier Transform (FFT) is an efficient implementation of DFT. It is a ubiqui-tously used building block in a wide array of signal processing systems. In general-purpose applications such as spectral monitoring and ... -
HC-FFT: Highly configurable and efficient FFT implementation on FPGA
Ergül, Pakize; Uğurdağ, Hasan Fatih; Davutoğlu, D. (TÜBİTAK, 2021)FFT is one of the basic building blocks in many applications such as sensors, radars, communications. For some applications, e.g., real-time spectral monitoring and analysis, FFT needs to be”run-time configurable” so that ... -
High level synthesis for rapid design of video processing pipes
Güzel, Aydın Emre (2017-01)Pipelining concept is a fundamental technique in digital hardware design, which maximizes the clock frequency or minimizes the resources. Designing a pipelined Field Programmable Gate Array (FPGA) module using pipelined ... -
HM-net: A regression network for object center detection and tracking on wide area motion imagery
Motorcu, Hakkı; Ateş, H. F.; Uğurdağ, Hasan Fatih; Güntürk, B. K. (IEEE, 2022)Wide Area Motion Imagery (WAMI) yields high resolution images with a large number of extremely small objects. Target objects have large spatial displacements throughout consecutive frames. This nature of WAMI images makes ... -
Hybrid CPU-GPU acceleration of a multithreaded image stitching algorithm
Tesfay, Shewıt Weldu; Demirdağ, Zeynep Gülbeyaz; Uğurdağ, Hasan Fatih; Ates, H. F. (IEEE, 2022)Real-time image stitching is critical, especially in un-manned aerial vehicles, and its acceleration has received attention in recent years. This paper describes an image stitching acceleration scheme for heterogeneous ... -
Image fusion hardware implementation with an optimized reduction circuit
Aydın, Furkan (2018-08)In this thesis, the hardware implementation of a real-time image fusion algorithm using a High-Level Synthesis (HLS) tool is presented. Image fusion combines two or more images through a color transformation process. Di ... -
An in-depth look at prior art in fast round-robin arbiter circuits
Uğurdağ, Hasan Fatih; Baskirt, O. (Özyeğin University, 08.01.2011)Arbiters are found where shared resources exist such as busses, switching fabrics, processing elements. Round-robin is a fair arbitration method, where requestors get near-equal shares of a common resource or service. ... -
Investigation on the effects of dc-link capacitors to DC/AC converter under various operation conditions
Bilgin, Mert Serdar (2019-05-29)In the designing stage of a DC/AC converter, determining parameters of components has an essential role such as value, size and material type. DC-Link capacitors are the critical components for DC/AC converters and define ... -
Limetime: linear model of electric trains including motor efficiency
To implement an optimization method that aims to increase energy efficiency, the definition of the vehicle model is crucial to calculate results that can be used in the real-world environment. Component behavior and ... -
Localization of biopsy needles in 2D ultrasound images using gabor filter
Kaya, Mert (2015-06)Needle Biopsies are common medical procedures to remove tissue samples from the body to be examined for diseases. During these procedures, the needle and its tip are tracked using medical imaging devices to avoid damage ... -
Lossless look-up table compression for hardware implementation of transcendental functions
Gener, Y. S.; Gören, S.; Uğurdağ, Hasan Fatih (IEEE, 2019)Look-Up Table (LUT) implementation of transcendental functions often offers lower latency compared to algebraic implementations at the expense of significant area penalty. MultiPartite table method (MP) can circumvent the ... -
M-pick fixed-priority selection and muxing
Tosun, Mustafa (2017-01)In this thesis, we propose a class of logic architectures for multi-pick (m-pick) fixed-priority arbitration (FPA) and muxing. An m-pick FPA selects the m topmost requests out of n inputs with priority order. Arbiters ... -
Mobility management and resource allocation strategies for visible light communication networks
Demir, Muhammet Selim. (2021-05-11)There has been a growing interest in Visible Light Communications (VLC) in recent years. The existing works in the literature on point-to-point VLC systems are well established, and especially the studies on physical layer ... -
A multi-channel real time implementation of dual tree complex wavelet Transform in field programmable gate arrays
Canbay, F.; Levent, Vecdi Emre; Serbes, G.; Uğurdağ, Hasan Fatih (Springer International Publishing, 2016)In medical applications, biomedical acquisition systems (BASs) are frequently used in order to diagnose and monitor critical conditions such as stroke, epilepsy, Alzheimer disease, arrhythmias and etc. Biomedical signals ... -
A novel approach for identification of thermal and optical characteristics for the active layer of high power photonic devices
Muslu, Ahmet Mete (2019-12)A vast amount of electricity consumption for general lighting, the implementation of energy efficient technologies is highlighted in many platforms with the use of light emitting diodes (LEDs). Because of its environmentally ...
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