Browsing Department of Electrical and Computer Engineering Graduate Theses by Title
Now showing items 84-103 of 345
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Device Deployment Strategies for Large-scale Wireless Sensor Networks
(2008-01-16)Planning device deployment is a fundamental issue in implementing wireless sensor network (WSN) applications. This design practice determines types, numbers and locations of devices in order to build a powerful and effective ... -
Dielectric Resonator Antenna on Printed Circuit Board
With the increased demand for high efficiency wireless communication systems, there is a requirement to develop the antenna systems that are effective and dependable. Instead of a traditional metallic antenna, a dielectric ... -
Digital Control in Microwave Receiver Front-End Components
(2014-05-05)In this thesis digital control techniques for two receiver front-end components i.e. the downconverter mixer and the modulator are presented. With decrease in size of CMOS-based geometries, decrease in performance and yield ... -
Digital Control of Phase Staggered Multiple ZVS Inverters for Grid-connected Photovoltaic Systems
(2012-04-30)The grid connected PV plants comprising of the PV cells and the power electronic inverters are a widely used technology in distributed power generation systems based on renewable energy sources. Microinverters form an ... -
Digital Control of Voltage Regulators for Fast Transient Response in Computer Applications
(2015-07-29)In this thesis, three techniques are proposed to enhance the transient performance of voltage regulators (VR) for computer applications. Voltage mode control with load line positioning and phase current balancing technique ... -
Digital Control Techniques for High Fidelity Haptic Simulation Systems
Haptic simulation systems allow human users to kinesthetically interact with virtual environment models through a robotic mechanism known as a haptic interface. The sampled-data nature of haptic interfaces limits the range ... -
Digital geometric-sequence control technique for bidirectional dual active bridge DC-DC converters used in future electric vehicles
(2016-09-22)Bidirectional DC-DC converters are widely used in different applications such as energy storage systems, Electric Vehicles (EVs), UPS, etc. In particular, future EVs require bidirectional power flow in order to integrate ... -
Digital Signal Processing for Directly Modulated Lasers in Optical Fiber Communications
(2013-01-31)Directly modulated lasers (DMLs) are a low cost solution for moderate reach systems due to their small footprint, low power dissipation and high output optical power. However, commercial 10-Gb/s on-off keying DMLs have ... -
Digitally Assisted Radio-Frequency Integrated Circuits
(2013-08-01)In this thesis, three radio frequency integrated circuits (RFICs) were digitally assisted for varying signal power, frequency or both. Performance paramters were 'optimized' in the sense of obtaining the best performance ... -
Digitally Controlled Energy Harvesting Power Management System
(2012-03-20)This thesis discusses a power electronics module (PEM) that is used to extract power from a human energy harvesting generator according to the user’s desired input power, and stores all of the extracted energy into an ... -
A Dimmable High Power Factor Electronic Ballast for Compact Fluorescent Lamps
(2012-07-18)Incandescent lamps are now being gradually replaced by Compact Fluorescent Lamps (CFLs) as CFLs consume less power to produce the same light output and its lifetime is much longer than that of an incandescent lamp. However, ... -
Direction of Arrival Estimation in Passive Sonar
(2012-06-27)Since World War I, the area of acoustic undersea warfare has witnessed several research activities targeting the development of advanced systems to accurately detect and localize underwater moving targets. One of the main ... -
Directional Cell Breathing - A Framework for Congestion Control and Load Balancing in Broadband Wireless Networks
(2009-04-27)Despite the tremendous bandwidth increase in 3rd generation (3G) Broadband Wireless Networks (BWNs) such as Universal Mobile Telecommunication System (UMTS), maintaining the mobile users’ Quality of Service (QoS) ... -
Distributed Beamforming in Wireless Relay Networks
(2008-09-18)In this thesis, we consider a wireless network consisting of d source-destination pairs and R relaying nodes. Each source wishes to communicate to its corresponding destination. By exploiting the spatial multiplexing ... -
Distributed Contention-Free Access for Multi-hop IEEE 802.15.4 Wireless Sensor Networks
(2007-10-26)The IEEE 802.15.4 standard is a low-power, low-rate MAC/PHY standard that meets most of the stringent requirements of single-hop wireless sensor networks. Sensor networks with nodal populations comprised of thousands of ... -
Distributed Data Storage System for Data Survivability in Wireless Sensor Networks
(2013-10-03)Wireless Sensor Networks (WSNs) that use tiny wireless devices capable of communicating, processing, and sensing promise to have applications in virtually all fields. Smart homes and smart cities are just few of the examples ... -
Distributed Space-Time Block Codes in Wireless Cooperative Networks
(2009-07-02)In cooperative networks, relays cooperate and form a distributed multi-antenna system to provide spatial diversity. In order to achieve high bandwidth efficiency, distributed space-time block codes (DSTBCs) are proposed ... -
Driver Behavior Modelling and Risk Profiling Using Large-Scale Naturalistic Driving Data
Driver risk profiling is an emerging scheme in the field of Intelligent Transportation Systems (ITS). Conventionally, a risk score of a driver is calculated on a per-trip basis according to the number of harsh braking, ... -
Dynamic Channel Selection in Cognitive Radio WiFi Networks
(2014-08-25)Increased wireless network intelligence and interference awareness enabled by cognitive radio can lead to improved spectrum utilization and network performance. This thesis proposes a novel Dynamic Channel Selection (DCS) ... -
Dynamic Spectrum Allocation for Cognitive Radio Networks: A Comprehensive Optimization Approach
(2015-10-16)In Cognitive Radio Networks (CRNs), the role of the Medium Access Control (MAC) layer is very important since it enables Secondary Users (SUs) to access the spectrum without affecting Primary Users' (PUs) communications. ...