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Radio Frequency Synthesis for Power-Constrained Systems
This thesis serves as a demonstration of the feasibility of performing multi-\si{\giga\hertz} frequency synthesis at voltage levels typical of certain energy harvesting elements, namely, photovoltaic cells and thermoelectric generators. From the measurement results presented in Chapter~\ref{chap: ADPLL} and the simulation ...
Convex Optimization Algorithms and Statistical Bounds for Learning Structured Models
Design and analysis of tractable methods for estimation of structured models from massive high-dimensional datasets has been a topic of research in statistics, machine learning and engineering for many years. Regularization, the act of simultaneously optimizing a data fidelity term and a structure-promoting term, is a widely ...
Optics-Based Quantum Information and Sensing Platforms Utilizing the Nitrogen-Vacancy Center in Diamond
The nitrogen-vacancy (NV) center is a point defect in the diamond crystal lattice, forming a localized-electron system with unique optical and spin properties. In particular, optical control and read-out of the spin state, combined with long spin coherence times, make it an attractive candidate for both high-sensitivity ...
Passivity Framework for Modeling, Composing and Mitigating Cyber Attacks
Cyber systems form the backbone of our society, serving infrastructures for health, energy, transportation, and finance to name a few. As the reliance on cyber systems grows, the impact of cyber attacks also increases. Recent cyber incidents demonstrate that cyber attacks result in not only financial cost, but also compromise ...
Random Access over Multi-Packet Reception Channels: A Mean-Field Approach
This thesis addresses the problem of Multi-Packet Reception (MPR) for random access scenarios in Wireless LAN type infrastructure network. Our results builds on a recently proposed physical-layer network coding mechanism – Compute-and-Forward (C&F); we embed this within slotted ALOHA and Carrier Sense Multiple Access (CSMA) ...
Power, Communication and Sensing Solutions for Energy Constrained Platforms
We live in a world where mobile devices such as smartphones, smart watches and tablets are commonplace. With rapid strides in technology, we have come a long way from the first main frame computer ENIAC, which occupied 167 m2 and consumed 150 kW of electricity. But, we cannot stand still. We are still ways off from the vision ...
Graphical Models for Peptide Identification of Tandem Mass Spectra
Graphical models (GMs) provide a flexible framework for modeling phenomena. In the past few decades, GMs have become indispensable tools for machine learning and computational biology. They afford a wide range of modeling granularity, from restricting only exact events of interest to occur to allowing all possible events ...
A 40nm CMOS Single-Ended Switch-Capacitor Harmonic-Rejection Power Amplifier for ZigBee Application
This thesis describes a single-ended switch-capacitor harmonic-rejection power amplifier for the 915 MHz ISM band for ZigBee applications. A multipath feed-forward harmonic-rejection technique is employed to suppress the 2nd/3rd/4th harmonics of the switch-capacitor power amplifier (PA) by 48/17/24 dB, respectively. The ...
Assessment of the Electrification of the Road Transport Sector on Net System Emissions
As worldwide environmental consciousness grows, electric vehicles (EVs) are becoming more common and despite the incredible potential for emissions reduction, the net emissions of the power system supply side plus the transportation system are dependent on the generation matrix. Current EV charging patterns tend to correspond ...
Unobtrusive Sensing Technologies for Supporting Remote Monitoring in the Home
My thesis focuses on exploration and implementation of various sensing technologies that support in-home activity recognition. The technologies presented in this thesis include (1) a wearable device and a platform for studying the elders acceptance of carrying an attachment, (2) an IMS-based technique for capturing fine-grained ...