Results 1 to 10 of about 285 (113)

Doubly Constrained Waveform Optimization for Integrated Sensing and Communications [PDF]

open access: yesSensors, 2023
This paper investigates threshold-constrained joint waveform optimization for an integrated sensing and communication (ISAC) system. Unlike existing studies, we employ mutual information (MI) and sum rate (SR) as sensing and communication metrics ...
Zhitong Ni   +3 more
doaj   +2 more sources

Tapping into Permutation Symmetry for Improved Detection of k-Symmetric Extensions [PDF]

open access: yesEntropy, 2023
Symmetric extensions are essential in quantum mechanics, providing a lens through which to investigate the correlations of entangled quantum systems and to address challenges like the quantum marginal problem.
Youning Li   +5 more
doaj   +2 more sources

Data-driven p-norms for estimating transmission loss coefficients in power systems. [PDF]

open access: yesPLoS ONE
This research introduces a novel convex methodology for estimating transmission loss coefficients (B-coefficients) in power systems using a data-driven approach based on power system measurements.
Oscar Danilo Montoya   +2 more
doaj   +2 more sources

Q-space trajectory imaging with positivity constraints (QTI+) [PDF]

open access: yesNeuroImage, 2021
Q-space trajectory imaging (QTI) enables the estimation of useful scalar measures indicative of the local tissue structure. This is accomplished by employing generalized gradient waveforms for diffusion sensitization alongside a diffusion tensor ...
Magnus Herberthson   +5 more
doaj   +2 more sources

Localization and Tracking of an Indoor Autonomous Vehicle Based on the Phase Difference of Passive UHF RFID Signals [PDF]

open access: yesSensors, 2021
State-of-the-art radio frequency identification (RFID)-based indoor autonomous vehicles localization methods are mostly based on received signal strength indicator (RSSI) measurements.
Yunlei Zhang   +3 more
doaj   +2 more sources

Joint Active and Passive Beamforming in RIS-Assisted Secure ISAC Systems [PDF]

open access: yesSensors
This paper investigates joint beamforming in a secure integrated sensing and communications (ISAC) system assisted by reconfigurable intelligent surfaces (RIS).
Jinsong Chen   +3 more
doaj   +2 more sources

Robust Next-Day Scheduling of PV Generation Sources Supplying a Standalone DC Microgrid via a Semi-Definite Programming Model

open access: yesIEEE Open Access Journal of Power and Energy
This study focuses on optimizing the efficient operation of standalone direct-current (DC) microgrids with photovoltaic (PV) sources using semi-definite programming (SDP) optimization.
Walter Gil-Gonzalez   +3 more
doaj   +3 more sources

An economic-environmental energy management system design for MT-HVDC networks via a semi-definite programming approximation with robust analysis

open access: yesAin Shams Engineering Journal
This research deals with the economic-environmental dispatch problem (EEDP) in multi-terminal high-voltage direct-current (MT-HVDC) systems by proposing a convex approximation based on semi-definite programming (SDP).
Wilmar Contreras-Sepúlveda   +2 more
doaj   +3 more sources

Control Barrier Functions-based Semi-Definite Programs (CBF-SDPs): Robust Safe Control For Dynamic Systems with Relative Degree Two Safety Indices

open access: yesCoRR, 2022
In this draft article, we consider the problem of achieving safe control of a dynamic system for which the safety index or (control barrier function (loosely)) has relative degree equal to two. We consider parameter affine nonlinear dynamic systems and assume that the parametric uncertainty is uniform and known a-priori or being updated online through ...
Jaskaran Singh Grover   +2 more
openaire   +2 more sources

An SDP Dual Relaxation for the Robust Shortest-Path Problem with Ellipsoidal Uncertainty: Pierra’s Decomposition Method and a New Primal Frank–Wolfe-Type Heuristics for Duality Gap Evaluation

open access: yesMathematics, 2022
This work addresses the robust counterpart of the shortest path problem (RSPP) with a correlated uncertainty set. Because this problem is difficult, a heuristic approach, based on Frank–Wolfe’s algorithm named discrete Frank–Wolfe (DFW), has recently ...
Chifaa Al Dahik   +4 more
doaj   +1 more source

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