Browsing Electrical and Computer Engineering by Title
Now showing items 1950-1969 of 1976
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Visual Attention-based Small Screen Adaptation for H.264 Videos
(University of Waterloo, 2008-08-29)We develop a framework that uses visual attention analysis combined with temporal coherence to detect the attended region from a H.264 video bitstream, and display it on a small screen. A visual attention module based ... -
Visual Content Characterization Based on Encoding Rate-Distortion Analysis
(University of Waterloo, 2023-02-27)Visual content characterization is a fundamentally important but under exploited step in dataset construction, which is essential in solving many image processing and computer vision problems. In the era of machine learning, ... -
Viterbi Decoding for OFDM systems operating in narrow band interference
(University of Waterloo, 2009-10-05)Our main objective in this thesis is to study the effect of narrow band interference on OFDM systems operating in the 2.4 Ghz ISM band and identify ways to improve upon existing techniques to deal with them. We first ... -
Voice Capacity and Data Response Time in Cognitive Radio Networks
(University of Waterloo, 2013-05-22)The growing interest towards wireless communication services over the recent years has increased the demand for radio spectrum. Inefficient spectrum management together with the scarcity of the radio spectrum is a limiting ... -
Voltage Sag Ride-Through and Harmonics Mitigation for Adjustable Speed Drives using Dual-Functional Hardware
(University of Waterloo, 2006)Great portion of today's industry are <em>Adjustable Speed Drives</em> (<em>ASD's</em>) operated in order to fulfill certain processes. When these processes are critical ones or sensitive to voltage disturbances, that ... -
Voltage Stability Analysis with High Distributed Generation (DG) Penetration
(University of Waterloo, 2012-08-14)Interest in Distributed Generation (DG) in power system networks has been growing rapidly. This increase can be explained by factors such as environmental concerns, the restructuring of electricity businesses, and the ... -
Voting-Based Consensus of Data Partitions
(University of Waterloo, 2008-08-29)Over the past few years, there has been a renewed interest in the consensus problem for ensembles of partitions. Recent work is primarily motivated by the developments in the area of combining multiple supervised learners. ... -
vProfile: Voltage-Based Sender Identification on Controller Area Networks
(University of Waterloo, 2021-08-25)Modern vehicles are becoming more accessible targets for cyberattacks due to the proliferation of wireless communication channels. The intra-vehicle Controller Area Network (CAN) bus lacks sender authentication, exposing ... -
WasmWalker: Path-based Code Representations for Improved WebAssembly Program Analysis
(University of Waterloo, 2023-05-05)WebAssembly, or Wasm, is a low-level binary language that enables execution of near-native-performance code in web browsers. Wasm has proven to be useful in applications including gaming, audio and video processing, and ... -
A Watermarking-Based Framework for Protecting Deep Image Classifiers Against Adversarial Attacks
(University of Waterloo, 2021-09-27)Although deep learning-based models have achieved tremendous success in image-related tasks, they are known to be vulnerable to adversarial examples---inputs with imperceptible, but subtly crafted perturbation which fool ... -
Wavelet Filter Banks in Perceptual Audio Coding
(University of Waterloo, 2003)This thesis studies the application of the wavelet filter bank (WFB) in perceptual audio coding by providing brief overviews of perceptual coding, psychoacoustics, wavelet theory, and existing wavelet coding algorithms. ... -
Weak invariant simulation and analysis of parameterized networks
(University of Waterloo, 2014-12-11)Multi-process networks figure in many engineering applications such as communication networks, transportation networks, manufacturing and logistic systems, and computer hardware and software. Parameterized discrete event ... -
Wearable RF Resonant Gaseous Chemical Sensor Array
(University of Waterloo, 2015-05-01)Biomarker detection is a major engineering goal that enables numerous applications in the fields of biomedical and law enforcement. By monitoring the conditions of the subject with a dedicated biomarker detection system, ... -
Wideband Micro-Power Generators for Vibration Energy Harvesting
(University of Waterloo, 2009-08-24)Energy harvesters collect and convert energy available in the environment into useful electrical power to satisfy the power requirements of autonomous systems. Vibration energy is a prevalent source of waste energy in ... -
Wideband Rectenna System for Microwave Power Transfer
(University of Waterloo, 2018-08-14)One of the fundamental devices in Microwave Power Transfer (MPT) is the recenna or rectifying antenna, which collects the electromagnetic energy from the free space and convert it directly to a useful DC power. Although ... -
Widely Linear MIMO MMSE Filter and Joint MLSE for VAMOS
(University of Waterloo, 2010-10-01)Currently, the 3rd Generation Partnership Project (3GPP) standards body is working actively to specify Voice services over Adaptive Multi-user channels on One Slot (VAMOS), an enhanced transmission scheme to double the ... -
Wind Farms Production: Control and Prediction
(University of Waterloo, 2007-10-16)Wind energy resources, unlike dispatchable central station generation, produce power dependable on external irregular source and that is the incident wind speed which does not always blow when electricity is needed. This ... -
Wireless One-time PAD : A Practical Method to Achieve Perfect Secrecy
(University of Waterloo, 2018-05-11)In this thesis, a new practical method to realize one-time pad perfect secrecy for wireless communication is presented. Most commonly used security methods are based on cryp- tographic techniques employed at the upper ... -
Wireless Sensors and their Applications in Controlling Vibrations
(University of Waterloo, 2010-05-18)As wireless devices are becoming more powerful, more flexible and less costly to produce, they are often being applied in new ways. Combining wireless technology with new types of sensors results in the ability to monitor ... -
Worst Case Analysis of DRAM Latency in Hard Real Time Systems
(University of Waterloo, 2013-12-17)As multi-core systems are becoming more popular in real time embedded systems, strict timing requirements for accessing shared resources must be met. In particular, a detailed latency analysis for Double Data Rate Dynamic ...