Browsing Doctoral Dissertations by Title
Now showing items 122-141 of 149
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A POMDP framework for antenna selection and user scheduling in multi-user massive MIMO systems
(2022-04-01)We use a partially observable Markov decision process (POMDP) framework to design a resource allocation policy for downlink transmit beamforming at a multi-antenna BS that is equipped with a massive number of antennas and ... -
PoT: bridging IoT with phone technology
(2023-09-01)The ”Phone of Things” (PoT) introduces an innovative integration of IoT systems with the widely available telephone network infrastructure. It repurposes underused home landlines and existing communication servers, weaving ... -
Power efficient designs for 5G wireless networks
(2021-01-01)In this dissertation, to step forward towards green communication, we study power efficient solutions in three potential 5G wireless networks, namely an asynchronous multicarrier two-way Amplify-and-Forward (AF) relay ... -
Power-optimal MIMO two-way relay networks
(2018-04-01)In this dissertation, we study MIMO two-way relay networks consisting of singleantenna users which wish to exchange information with the help of multiple multiantenna relays. The problem we aim to solve is to minimize the ... -
Pushing the limits of traditional unsupervised learning
(2018-08-01)Unsupervised learning has important applications in extremely large data settings such as in medical, biological, social, and environmental data. Typically in these settings, copious amounts of data are collected, with the ... -
A real-time 12-lead electrocardiogram remote patient monitoring and analytics framework
(2022-10-01)This work presents XBeats: A machine learning-based framework for real-time electrocardiogram monitoring and analysis that uses edge computing and data analytics for early anomaly detection. The framework encompasses a ... -
Risk-modeling tools for designing resilient micro energy grids
(2019-03-01)Micro energy grid (MEG) is widely used to meet the combined electricity, heating, cooling and natural gas demands for numerous customers’ types. Design of MEGs were extensively introduced in numerous articles, however ... -
Robotic radiation mapping using modelling and probabilistic analysis of sparse data
(2015-07-01)An approach for generating radiation intensity maps, comprised of a mobile robotic platform and an integrated radiation model, is presented, and its ability to generate accurate radiation maps in simulation studies as well ... -
Robust multi-group multicast beamforming design and antenna selection for massive MIMO systems
(2023-04-01)In this dissertation, we use an Alternating Direction Method of Multipliers (ADMM) algorithm to design robust multi-group multicast beamforming scheme for massive multiple-input multiple-output (MIMO) systems for two ... -
Soft-switched, active-clamped DC/AC and AC/AC converters for IPT-based wireless charging applications
(2020-09-01)The acquisition of inductive power transfer (IPT) technology in commercial electric vehicles (EVs) alleviates the inherent burdens of high cost, limited driving range, and long charging time. In EV wireless charging systems ... -
Sparse signal representation based algorithms with application to ultrasonic array imaging
(2016-06-01)We address one- and two-layer ultrasonic array imaging. We use an array of transducers to inspect the internal structure of a given specimen. In the case of one-layer imaging we also address the problem of mode conversion. ... -
Spectrum sharing for multi-user massive MIMO networks
(2023-12-01)In this dissertation, we propose a creative approach to advance 5G network technologies by investigating the impact of employing an underlay spectrum sharing (USS) scheme on the performance of two massive multi-input-multi-output ... -
A system framework for non-intrusive monitoring of HMI states for detecting human-in-the-loop error precursors
(2020-04-01)Past industrial accidents suggest that increased automation has had an adverse effect on operator situational awareness (SA) and Human-in-the-Loop (HITL) errors. More so, any current automation is not yet capable of providing ... -
System integration and optimization of copper-chlorine thermochemical cycle with various options for hydrogen production
(2013-08-01)The Copper-Chlorine (Cu-Cl) thermochemical water splitting cycle is one of the most attractive alternative thermochemical cycles for clean hydrogen production due to its lower temperature requirement and better overall ... -
A systems approach to assessing the sustainability of hybrid community energy systems.
(2014-09-01)The goal to achieve a sustainable society that will endure over the long term is generally regarded as a positive evolutionary course. One of the challenges with this goal is developing a quantitative assessment of the ... -
A temporal topic model for social trend prediction
(2017-08-01)Social media provides increasing opportunities for users to voluntarily share their thoughts and concerns in a large volume of data. While user-generated data from each individual may not provide considerable information, ... -
Thermal management of the copper-chlorine cycle for hydrogen production: analytical and experimental investigation of heat recovery from molten salt
(2012-08-01)Hydrogen is known as a clean energy carrier which has the potential to play a major role in addressing the climate change and global warming, and thermochemical water splitting via the copper-chlorine cycle is a promising ... -
Thermal sustainability of low-temperature geothermal energy systems: System interactions and environmental impacts.
(2013-10-01)In storing heat during summer for use in winter, the ground provides a better source/sink of heat than the outside air in regards to heat pump efficiency, being cooler than the outside air in the summer and warmer in the ... -
Torque control strategy for off-road vehicle mobility.
(2014-11-01)Multi-wheeled off-road vehicles behavior depend not only on the total provided power by the engine but also on the power distribution among the drive axles/wheels. In turn, this distribution is primarily regulated by the ... -
Toward enhancement of evolutionary multi- and many-objective optimization: algorithms, performance metrics, and visualization techniques
(2017-12-01)In the last three decades, the focus of multi-criteria optimization has been solving problems containing two or three objectives. However, real-world problems generally involve multiple stakeholders and functionalities ...