Dept. of Electrical and Electronics Engineering - Master's degree: Recent submissions
Now showing items 1-20 of 541
-
Improved Wilkinson power divider structures for millimeter-wave applications
(Bilkent University, 2019-01)Communication systems, radars, electronic warfare and space applications desire integrated circuits with higher operating frequencies. Working at the millimeterwave region increases data rates, provides a more efficient ... -
Design, implementation, manufacturing and measurements of Dickson charge pump circuits for capacitive micromachined sensor biasing
(Bilkent University, 2019-02)This work presents the design and testing process of Dickson charge pump circuits for micromachined sensor biasing. Necessary blocks of different types of circuits with different functions are examined such as inverters, ... -
Ku-band substrate integrated waveguide bandpass filter design using mechanical tuning
(Bilkent University, 2019-02)Substrate integrated waveguide (SIW) filters are widely used due to their easy fabrication techniques and relatively high quality factor. In microwave frequencies, manufacturing tolerances become comparable with wavelength ... -
Rapid multi-contrast magnetic resonance imaging and time-of-flight angiography
(Bilkent University, 2019-02)Magnetic resonance imaging (MRI) is a frequently used imaging modality for examining soft tissue structures. Long scanning time is the most crucial constraint that limits the use of MRI in the clinics. Partial Fourier ... -
Performance analysis of CSMA/CD for in-band full duplex wireless communication
(Bilkent University, 2019-01)In-band full duplex (IBFD) wireless communication is gaining a lot of interest as it improves spectral efficiency. Due to development in self-interference cancellation schemes and overcoming hardware limitations, IBFD ... -
Numerical methods for the transient analysis of multi-regime Markov fluid queues
(Bilkent University, 2019-01)Markov fluid queue models have served as one of the main tools for the performance analysis of computer and communication systems and networks. These models have also been used in other disciplines such as insurance risk, ... -
Reservation frame slotted ALOHA for multi-class IOT networks
(Bilkent University, 2019-01)The Internet of Things (IoT) is a promising technology capable of revolutionizing our work and daily lives. ALOHA based medium access schemes are widely used in IoT applications due to their low complexity despite lower ... -
Algorithms and regret bounds for multi-objective contextual bandits with similarity information
(Bilkent University, 2019-01)Contextual bandit algorithms have been shown to be e ective in solving sequential decision making problems under uncertain environments, ranging from cognitive radio networks to recommender systems to medical diagnosis. ... -
Prediction with expert advice: on the role of contexts, bandit feedback and risk-awareness
(Bilkent University, 2018-12)Along with the rapid growth in the size of data generated and collected over time, the need for developing online algorithms that can provide answers without any offline training has considerably increased. In this thesis, ... -
Low complexity efficient online learning algorithms using LSTM networks
(Bilkent University, 2018-12)In this thesis, we implement efficient online learning algorithms using the Long Short Term Memory (LSTM) networks with low time and computational complexity. In Chapter 2, we investigate efficient covariance information-based ... -
Load balancing enhancements to the routing protocol for low power and lossy networks in the internet of things
(Bilkent University, 2018-12)The internet today is shifting from the Internet of people to the Internet of Things (IoT). Particularly, in IoTs, wireless sensors connect edge devices to the Internet via a gateway that provides connectivity between ... -
Adaptive energy management for solar energy harvesting wireless sensor nodes
(Bilkent University, 2018-09)Wireless Sensor Networks (WSN) will have a key role in the upcoming era of the Internet of Things (IoT) as they will be forming the basis of communication infrastructure. Energy harvesting has been a widely used instrument ... -
Queuing analysis of the energy-delay trade-off in wireless networks
(Bilkent University, 2018-09)Energy-efficiency of wireless communication systems has been an important research topic in recent years. For such a system, a transmission profile is described by the transmission power and the modulation and coding ... -
Development and characterization of a direct detection fiber optic distributed acoustic sensor
(Bilkent University, 2018-09)Phase-sensitive optical time domain re ectometer (ø-OTDR) based distributed acoustic sensor (DAS) systems have attracted increasing attention in recent years due to their remarkable advantages in a wide range of industrial ... -
Improvement and comparison of complex B₁ mapping techniques for use in MREPT
(Bilkent University, 2018-09)Impedance imaging, (i.e., conductivity, , and permittivity, ) provides helpful information about contrast between healthy and malignant tissues. As one of the impedance imaging techniques, Magnetic Resonance Electrical ... -
Experimental and model based investigation of the effects of high stimulus presentation rate on code-modulated visual evoked potential based brain-computer interfaces
(Bilkent University, 2018-09)Objective. Previous studies on code-modulated visual evoked potentials (c- VEP) have yielded important results regarding the performance of c-VEP based brain-computer interfaces (BCIs) in recent years. Since, speed is ... -
Improved artificial neural network training with advanced methods
(Bilkent University, 2018-09)Artificial Neural Networks (ANNs) are used for different machine learning tasks such as classification, clustering etc. They have been utilized in important tasks and offering new services more and more in our daily ... -
User grouping in wireless networks with full duplex base stations and legacy mobile stations
(Bilkent University, 2018-08)Improving spectral efficiency is a key objective in next generation wireless networks. Recent advances in self-interference cancellation techniques made in-band full-duplex wireless communications possible. Unlike ... -
Low convective field artifact elimination using dielectric padding and multichannel receive in cr-MREPT conductivity images
(Bilkent University, 2018-08)Imaging the electrical conductivity of the tissues in RF frequencies is an important tool for medical diagnostic purposes along with the local specific absorption rate estimation that is closely related to MR safety ... -
Design, implementation and construction of an eight channel RF TEM array and its use in MR-EPT
(Bilkent University, 2018-08)Magnetic Resonance - Electrical Properties Tomography, aiming at reconstructing the electrical properties (EPs) at radio frequencies, has a continuously increasing importance in terms of identifying the cancerous tissues ...
