Elektrik ve Elektronik Mühendisliği ve Siber Sistemler
Recent Submissions
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RSS-based wireless LAN indoor localization and tracking using deep architectures
(MDPI, 2022)Wireless Local Area Network (WLAN) positioning is a challenging task indoors due to environmental constraints and the unpredictable behavior of signal propagation, even at a fixed location. The aim of this work is to develop ... -
Design of a digitally controlled ring oscillator for ADPLL
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)The digitally controlled oscillator is a commonly investigated circuitry due to its wide uses, especially in PLLs. This thesis proposes a digitally controlled ring oscillator with a sufficiently wide tuning range and fine ... -
Digital filter and analog LDO design for ADPLL in 180 nm CMOS technology
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)PLL is a control system built by elements that synchronize frequency and phase of a stable reference signal with an oscillator output signal. In 21st century, PLL is widely and essentially used in one's daily life in ... -
A high-resolution time to digital converter design for all digital phase-locked loops
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Phase-locked loops are one of the most significant modules that are used not only for communication circuits but also in other fields like biomedical and computer sciences. There are many types of PLLs such as Analog, ... -
Mutual coupling compensation in arrays and its implementation on software defined radios
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Mutual coupling in antenna arrays is a classical problem that has been researched for sev eral decades. This thesis presents two different algorithms along with their experimental verification by developing two different ... -
Deep learning based prediction of path loss values and distributions from satellite images
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)It is critical to provide rapid deployment of robust and effective outdoor communication systems in today's world, where many seek to provide wireless connection services from aerial grids of drones and balloons, or low ... -
Scattering from a chiral cylinder of arbitrary cross-section above a dielectric half-space
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)A simple numerical solution for electromagnetic scattering from a two dimensional (2-D) homogeneous chiral cylinder of arbitrary cross-section placed above a dielectric half-space is presented. The surface equivalence ... -
Scattering from a chiral cylinder of arbitrary cross-section above a ground plane
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)In this dissertation, a simple, accurate, and efficient solution is presented for the problem of scattering from a chiral cylinder of arbitrary cross-section above a ground plane. Both TM and TE excitations are considered. ... -
A comprehensive survey on small object detection
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)The advancement in artificial intelligence and computer vision facilitates object detection for computer-based systems. Object detection is used in a wide spectrum of applications such as face detection, enforcement ... -
Path loss prediction from heightmap using deep learning
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Wireless channel parameters of a region are required for a successful network planning. Sufficient information about those parameters can be obtained by either actual measurements or ray-tracing simulations that use 3D ... -
Software implementation of key transceiver algorithms for an in-band full-duplex DVB-S2-based satellite communication system
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2021)Nowadays, the demand for satellite bandwidth is boosted driven by the introduction of new areas of applications such as 5G-satellite integration and the internet of things. In-Band Full-Duplex communications, where a ... -
Ultra low power 12-bit 100 ks/s differential sar adc in 65 nm cmos technology
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)Sensor nodes has preserved their importance in the last couple decades. One of the very fundamental elements of these devices are analog to digital converters. In today's world, the necessity of sensor nodes and implantable ... -
Developing novel spectrum occupancy prediction and physical layer security techniques
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)Wireless communication systems have pervaded every aspect of our lives; from financial transactions to health records, from entertainment to work, from education to travelling. This extensive usage of wireless devices is ... -
Developing novel radio resource management techniques for 5G and beyond
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)Application richness and the level of technological development have increased extraordinarily in the last ten years in the field of modern wireless communications. There is a need for a flexible communications infrastructure ... -
Altitude optimization of UAVS serving as base stations using deep learning
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)It is expected that unmanned aerial vehicles (UAVs) will play a vital role in future communication systems. Optimum positioning of UAVs, serving as base stations can be done through extensive measurements or ray tracing ... -
Interference and channel control techniques for the future of wireless communications
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)Interference and random behavior of the propagation environment are the main impediments to serve a broad range of applications and use-cases in modern communication systems. Although conventional orthogonal multiple ... -
Physical layer security techniques for future wireless communication systems against eavesdropping
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2020)The inherent broadcast characteristics of wireless communication make it vulnerable to passive eavesdropping. Conventionally, security techniques in the upper layers like cryptography-based techniques have been employed ... -
The problems of common criteria evaluation for hospital information management systems in Turkey
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2019)Hospital information management systems (HIMS) are essential tool for hospitals not only for the management of the hospital but also for improving healthcare quality and efficiency. The developed countries set national and ... -
Dynamic range enhancement in light field imaging systems
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2019)High dynamic range imaging has been an active research area in computational photography over the last two decades. The main reason is that the dynamic range of a traditional camera is typically less than the dynamic range ... -
Image enhancement through new techniques in computational photography
(İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2019)Quality of a digital image depends on several factors operative during the image formation process, e.g. sensor defects, sensor dynamic range, poor spatial resolution,lens distortion, camera shake and object motion. This ...
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