Department of Electrical and Electronics Engineering

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Recent Submissions

Highly Accurate Clock Synchronization With Drift Correction for the Controller Area Network
Akpinar, Murat; Schmidt, Şenan Ece; Schmidt, Klaus Verner (2022-12-01)
Modem vehicles, that have to be considered as safety-critical cyber-physical systems, require highly accurate clock synchronization (CS) among their distributed computing devices. Since Controller Area Network (CAN) is the...
Plug-in electric vehicle load modeling for charging scheduling strategies in microgrids
Güzel, Saliha İven; Göl, Murat (2022-12-01)
Utilization of plug-in electric vehicle (PEV) load models can improve the performance of smart charging strategies, which increase the reliability of the grid by harnessing the flexibility of PEV loads. This paper presents...
Improved Hard Example Mining Approach for Single Shot Object Detectors
Köksal, Aybora; Tuzcuoğlu, Önder; Ince, Kutalmiş Gökalp; Ataseven, Yoldaş; Alatan, Abdullah Aydın (2022-10-18)
Hard example mining methods generally improve the performance of the object detectors, which suffer from imbalanced training sets. In this work, two existing hard example mining approaches (LRM and focal loss, FL) are adap...
Near optimal scheduling for opportunistic spectrum access over block fading channels in cognitive radio assisted vehicular network
Gül, Ömer Melih; Kantarci, Burak (2022-10-01)
© 2022 Elsevier Inc.With the increasing use of cognitive radio technology in vehicular communications, vehicles will be enabled with cognitive radio in the future. Cognitive radio assisted vehicular networks make cognitive...
A compact pattern reconfigurable antenna employing shorted quarterwave patch antennas
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2022-10-01)
Collaborative Direction of Arrival estimation by using Alternating Direction Method of Multipliers in distributed sensor array networks employing Sparse Bayesian Learning framework
Nurbas, Ekin; Onat, Emrah; Tuncer, Temel Engin (2022-10-01)
In this paper, we present a new method for Direction of Arrival (DoA) estimation in distributed sensor array networks by using Alternating Direction Method of Multipliers (ADMM) in Sparse Bayesian Learning (SBL) framework....
Modeling and Analysis of Sea-Surface Vehicle System for Underwater Mapping Using Single-Beam Echosounder
Karadeniz Kartal, Seda ; Hacıoğlu, Rıfat; Görmüş, K. Sedar; Kutoğlu, Ş. Hakan; Leblebicioğlu, Mehmet Kemal (2022-10-01)
Detailed knowledge on the shape of the seafloor is crucial for many researchers. Bathymetric data are critical for navigational safety and are used for underwater mapping. This study develops a sea-surface vehicle (SSV) sy...
MiSTA: An Age-Optimized Slotted ALOHA Protocol
Ahmetoglu, Mutlu; Yavascan, Orhan Tahir; Uysal, Elif (2022-09-01)
We introduce minislotted threshold ALOHA (MiSTA), a slotted ALOHA modification designed to minimize the network-wide time average Age of Information (AoI). In MiSTA, sources whose ages are below a certain threshold stay si...
Kanal ve Enerji Duyarlı Çizelgeleme ile Federe Ögrenme
Cakir, Zeynep; Ceran Arslan, Elif Tuğçe (2022-08-29)
Bu calısmada, ortamdan enerji hasat edebilen .oksayıda cihazın, kanal durumuna ba˘glı olarak bir makine .˘grenmesimodelini e˘gitti˘gi federe .˘grenme modeli incelenmi.stir. Anaodak, hata olasılıklı kablosuz kanal üzerinde...
Kısa Paket İletimlerinde Adaptif Blok Uzunluğu Seçimi ile Bilgi Yaşı İhlali Olasılığının Azaltılması
Ozkaya, Aysenur; Ceran Arslan, Elif Tuğçe (2022-08-29)
Bilginin tazeliğinin bir ölçüsü olan Bilgi Yaşı (BY), küçük boyuttaki durum güncelleme paketlerinin eskimeden bir gözlemciye iletilmesi gerektiği sistemlerde önemli bir ölçüt haline gelmiştir. Bu çalışmadaki amaç, anlık bi...
Nanoscale optical parametric amplification through super-nonlinearity induction
Aşırım, Özüm Emre; Kuzuoğlu, Mustafa (2022-08-01)
Optical parametric amplification (OPA) is a nonlinear process through which a low-power input wave is amplified by extracting energy from an interaction medium that is energized by a high-intensity pump wave. For a signifi...
Nanoscale active tuning of the second harmonic generation efficiency in semiconductors from super-low to gigantic values
Asirim, Ozum Emre; Kuzuoğlu, Mustafa (2022-08-01)
Second harmonic generation efficiency (SHGE) strongly depends on the length of the interaction material along the beam propagation axis. Since a nanoscale interaction length is considered too short even in the optical wave...
A Pattern Reconfigurable Multi-Mode Antenna Based on Circular Disk and Ring-Shaped Resonators
Çelik, Feza Turgay; Alatan, Lale; Aydın Çivi, Hatice Özlem (2022-07-15)
A Computationally Efficient Topology Identifiability Analysis of Distribution Systems
Eser, Fatih; Yılmaz, Uğur Can; Dursun, Erk; Cinalioglu, Mustafa Cihan; Göl, Murat (2022-07-01)
© 2022 Elsevier B.V.Because of the lack of a proper real-time monitoring system at distribution power networks, topology identification can not be performed properly. While in traditional radial structures the topology is ...
Structural Analysis of Synchronization in Networks of Linear Oscillators
Tuna, Sezai Emre (2022-07-01)
In undirected networks of identical linear oscillators coupled through dissipative and restorative connectors (e.g., pendulums undergoing small vibrations connected via dampers and springs), the relation between asymptotic...
Selective Harmonic Elimination for Variable Frequency Traction Motor Drives Using Harris Hawks Optimization
Nalçacı, Gamze; Yildirim, Dogan; ÇADIRCI, IŞIK; Ermiş, Muammer (2022-07-01)
In this article, Harris hawks' optimization (HHO) for selective harmonic elimination method (SHEM) of a voltage source inverter has been applied to a traction motor drive for light rail transportation. The main objective o...
Frequency-Domain Estimation of a Transfer Matrix of an Uncommon Quadrotor in Hover
Baskin, Mehmet; Leblebicioğlu, Mehmet Kemal (2022-07-01)
In this article, system identification of an uncommon quadrotor in hover is discussed. Two counter-rotating big rotors on the longitudinal axis and two counter-rotating small tilt rotors on the lateral axis form this quadr...
Muzzle Voltage Experiments of the EMFY-3 Launcher
Tosun, Nail; Karagoz, Mustafa; Yurdakonar, Ferhat; Gulletutan, Gorkem; Yildirim, Baran; Keysan, Ozan (2022-07-01)
Muzzle voltage is an essential diagnostic tool used in both contact resistance modeling and transition determination. However, it is challenging to stem the necessary meanings from the collected measurements. In this study...
Semantic Communications in Networked Systems: A Data Significance Perspective
Uysal, Elif; KAYA, ONUR; Ephremides, Anthony; Gross, James; Codreanu, Marian; Popovski, Petar; Assaad, Mohamad; Liva, Gianluigi; Munari, Andrea; Soret, Beatriz; Soleymani, Touraj; Johansson, Karl Henrik (2022-7-01)
We present our vision for a departure from the established way of architecting and assessing communication networks, by incorporating the semantics of information, defined not necessarily as the meaning of the messages, bu...
Hierarchical Coding for Cloud Storage: Topology-Adaptivity, Scalability, and Flexibility
Yang, Siyi; Hareedy, Ahmed; Calderbank, Robert; Dolecek, Lara (2022-06-01)
In order to accommodate the ever-growing data from various, possibly independent, sources and the dynamic nature of data usage rates in practical applications, modern cloud data storage systems are required to be scalable,...
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