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We consider the problem of robust estimation in the presence of integrity attacks. There are m sensors monitoring the state and p of them are under attack. The malicious measurements collected by the compromised sensors can be manipulated…

信息论 · 计算机科学 2015-11-24 Duo Han , Yilin Mo , Lihua Xie

Estimation of the Saupe tensor is central to the determination of molecular structures from residual dipolar couplings (RDC) or chemical shift anisotropies. Assuming a given template structure, the singular value decomposition (SVD) method…

计算工程、金融与科学 · 计算机科学 2016-06-23 Yuehaw Khoo , Amit Singer , David Cowburn

Due to the explosive growth of large-scale data sets, tensors have been a vital tool to analyze and process high-dimensional data. Different from the matrix case, tensor decomposition has been defined in various formats, which can be…

最优化与控制 · 数学 2023-12-27 Rachel Grotheer , Shuang Li , Anna Ma , Deanna Needell , Jing Qin

We consider the problem of resilient state estimation in the presence of integrity attacks. There are m sensors monitoring the state and p of them are under attack. The sensory data collected by the compromised sensors can be manipulated…

信息论 · 计算机科学 2016-05-04 Duo Han , Yilin Mo , Lihua Xie

For testing a group of hypotheses, tremendous $p$-value combination methods have been developed and widely applied since 1930's. Some methods (e.g., the minimal $p$-value) are optimal for sparse signals, and some others (e.g., Fisher's…

统计方法学 · 统计学 2018-01-16 Hong Zhang , Tiejun Tong , John E Landers , Zheyang Wu

Efficient and low-complexity beamforming design is an important element of satellite communication systems with mobile receivers equipped with phased arrays. In this work, we apply the simultaneous perturbation stochastic approximation…

信号处理 · 电气工程与系统科学 2021-04-20 Zheng Chen , Håkan Johansson

We propose a novel a posteriori error estimator for conforming finite element discretizations of two- and three-dimensional Helmholtz problems. The estimator is based on an equilibrated flux that is computed by solving patchwise mixed…

数值分析 · 数学 2021-05-05 T. Chaumont-Frelet , A. Ern , M. Vohralík

Deregulation of energy markets, penetration of renewables, advanced metering capabilities, and the urge for situational awareness, all call for system-wide power system state estimation (PSSE). Implementing a centralized estimator though is…

机器学习 · 统计学 2012-07-03 Vassilis Kekatos , Georgios B. Giannakis

Power line communication continues to draw increasing interest by promising a wide range of applications including cost-free last-mile communication solution. However, signal transmitted through the power lines deteriorates badly due to the…

信息论 · 计算机科学 2015-03-13 Kai Xie , Jing , Li

Network topology in distribution networks is often unknown, because most switches are not equipped with measurement devices and communication links. However, knowledge about the actual topology is critical for safe and reliable grid…

系统与控制 · 计算机科学 2015-02-25 Reza Arghandeh , Martin Gahr , Alexandra von Meier , Guido Cavraro , Monika Ruh , Göran Andersson

In modern power systems, the Rate-of-Change-of-Frequency (ROCOF) may be largely employed in Wide Area Monitoring, Protection and Control (WAMPAC) applications. However, a standard approach towards ROCOF measurements is still missing. In…

信号处理 · 电气工程与系统科学 2019-03-22 Guglielmo Frigo , Asja Derviskadic , Yihui Zuo , Mario Paolone

This paper addresses the secure state estimation problem for continuous linear time-invariant systems with non-periodic and asynchronous sampled measurements, where the sensors need to transmit not only measurements but also sampling…

系统与控制 · 电气工程与系统科学 2026-03-31 Zishuo Li , Anh Tung Nguyen , André M. H. Teixeira , Yilin Mo , Karl H. Johansson

We present an algorithm for low rank decomposition of tensors of any symmetry type, from fully asymmetric to fully symmetric. It recovers the decomposition one summand at a time via the higher-order power method. This approach is known to…

数值分析 · 数学 2026-05-22 Kexin Wang , João M. Pereira , Joe Kileel , Anna Seigal

A new method is discussed for the systematic synthesis, design and performance optimization of varactor-based parametric frequency dividers (PFDs) exhibiting an ultra-low power threshold ($P_{th}$). For the first time, it is analytically…

信号处理 · 电气工程与系统科学 2020-08-26 Hussein M. E. Hussein , Mahmoud A. A. Ibrahim , Giuseppe Michetti , Matteo Rinaldi , Marvin Onabajo , Cristian Cassella

A modular method was suggested before to recover a band limited signal from the sample and hold and linearly interpolated (or, in general, an nth-order-hold) version of the regular samples. In this paper a novel approach for compensating…

多媒体 · 计算机科学 2010-11-12 Ali Ayremlou , Mohammad Tofighi , Farokh Marvasti

Function approximation from input and output data is one of the most investigated problems in signal processing. This problem has been tackled with various signal processing and machine learning methods. Although tensors have a rich history…

统计理论 · 数学 2023-02-16 Christina Auer , Thomas Paireder , Oliver Ploder , Oliver Lang , Mario Huemer

The demand for faster protection algorithms is growing due to the increasingly faster dynamics in the system. The majority of existing algorithms require empirically selected set-points, which may reduce sensitivity to internal faults and…

系统与控制 · 电气工程与系统科学 2019-08-13 Nadezhda Davydova , Dmitry Shchetinin , Gabriela Hug

The soft error rate (SER) of integrated circuits (ICs) operating in space environment may vary by several orders of magnitude due to the variable intensity of radiation exposure. To ensure the radiation hardness without compromising the…

仪器与探测器 · 物理学 2021-04-06 Marko Andjelkovic , Junchao Chen , Aleksandar Simevski , Zoran Stamenkovic , Milos Krstic , Rolf Kraemer

In this paper, a novel method for classification of power quality events is illustrated. 15 types of power quality events consisting of single and multi-stage disturbances are considered for study. A database of the synthetic PQ events is…

信号处理 · 电气工程与系统科学 2019-10-14 Sambit Dash , Umamani Subudhi

As the phasor measurement unit (PMU) placement problem involves a cost-benefit trade-off, more PMUs get placed on the higher voltage buses. However, this causes many of the lower voltage levels of the bulk power system to not be observed by…

信号处理 · 电气工程与系统科学 2024-03-22 Antos Cheeramban Varghese , Hritik Shah , Behrouz Azimian , Anamitra Pal , Evangelos Farantatos