R
Raymond H. Kwong
Researcher at University of Toronto
Publications - 68
Citations - 2586
Raymond H. Kwong is an academic researcher from University of Toronto. The author has contributed to research in topics: Digital watermarking & Fault (power engineering). The author has an hindex of 19, co-authored 68 publications receiving 2304 citations.
Papers
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Journal ArticleDOI
A variable step size LMS algorithm
Raymond H. Kwong,E.W. Johnston +1 more
TL;DR: A least-mean-square adaptive filter with a variable step size, allowing the adaptive filter to track changes in the system as well as produce a small steady state error, is introduced.
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Fault diagnosis in discrete-event systems: framework and model reduction
TL;DR: A state-based approach for online passive fault diagnosis in systems modeled as finite-state automata is presented, and necessary and sufficient conditions for failure diagnosability are derived.
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Analysis and design of secure watermark-based authentication systems
TL;DR: Simulations of semi-fragile authentication methods on real images demonstrate the effectiveness of the MSB-LSB approach in simultaneously achieving security, robustness, and fragility objectives.
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Detection and mitigation of classes of attacks in supervisory control systems
TL;DR: In this paper, the authors consider the problem of intrusion detection and mitigation in supervisory control systems, where the attacker has the ability to enable or disable vulnerable actuator commands and erase or insert vulnerable sensor readings.
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Fault diagnosis in discrete-event systems: incorporating timing information
TL;DR: A framework is introduced for fault diagnosis in timed discrete-event systems that results in reduction in online computing requirements and in the size of the diagnosis system, at the expense of more offline design calculations.