Results 71 to 80 of about 9,824 (145)
Joint beamforming and reflection design for IRS‐aided co‐existing radar and communication
Electronics Letters, Volume 61, Issue 1, January/December 2025.Optimum performance of co‐existing radar and communication (CRC) system is a challenging task when the target and user exist within a crowded area where path‐loss is dominant. Inspired by the application of intelligent reflecting surface (IRS) in reconstructing the wireless transmission environment, this paper investigates deploying IRS to the CRC ...
Qijun Deng +4 more
wiley +1 more source
An Efficient NLOS Errors Mitigation Algorithm for TOA-Based Localization
Sensors, 2020 In time-of-arrival (TOA) localization systems, errors caused by non-line-of-sight (NLOS) signal propagation could significantly degrade the location accuracy.
Yanbin Zou, Huaping Liu
doaj +1 more source
Matrix convex functions with applications to weighted centers for semidefinite programming [PDF]
In this paper, we develop various calculus rules for general smooth matrix-valued functions and for the class of matrix convex (or concave) functions first introduced by Loewner and Kraus in 1930s.
Brinkhuis, J., Luo, Z-Q., Zhang, S.
core +1 more source
Electronics Letters, Volume 61, Issue 1, January/December 2025.In this paper, the design of a MIMO optimal PID controller and a feedforward controller to enhance disturbance rejection and reference tracking for an MAV system is proposed. The feedback controller employs LMI constraints for iterative variable tuning, while a feedforward strategy is developed to further optimise performance.
Saeedreza Tofighi
wiley +1 more source
Energy Efficiency for STAR‐RIS Aided Multi‐User MISO Networks
Electronics Letters, Volume 61, Issue 1, January/December 2025.In the simultaneous transmission and reflection reconfigurable intelligent surface assisted multi‐user multi‐input single‐output downlink network, the precoding matrix and phase shift matrix are optimised to maximise the energy efficiency. An optimisation algorithm based on alternating optimisation, successive convex approximation method and Dinkelbach
Junhan Zhang +4 more
wiley +1 more source
An Optimization‐Based Line‐Wise Approach for Accurate Radial Distribution System State Estimation
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.State estimation is an essential tool for the effective operation and management of modern power systems. A common challenge in state estimation is ensuring accurate estimates despite limited real‐time measurements and high pseudo‐measurement errors. This paper presents a novel line‐wise state estimator (LW‐SE), leveraging conic quadratic optimization ...
Amir Reza Nikzad +3 more
wiley +1 more source
Worst-Case Linear Discriminant Analysis as Scalable Semidefinite Feasibility Problems
, 2014 In this paper, we propose an efficient semidefinite programming (SDP) approach to worst-case linear discriminant analysis (WLDA). Compared with the traditional LDA, WLDA considers the dimensionality reduction problem from the worst-case viewpoint, which ...
Hengel, Anton van den +3 more
core
NPA Hierarchy for Quantum Isomorphism and Homomorphism Indistinguishability [PDF]
QuantumMančinska and Roberson [FOCS'20] showed that two graphs are quantum isomorphic if and only if they admit the same number of homomorphisms from any planar graph. Atserias et al.
Prem Nigam Kar +3 more
doaj +1 more source
Physical-Layer Multicasting Design for Downstream G.fast DSL Transmission
IEEE Access, 2019 This paper studies the physical-layer multicasting design for downstream G.fast digital subscriber line (DSL) transmission, which corresponds to a multi-user multi-tone (i.e., multi-carrier) scenario. The design goal is to maximize the weighted-sum-group-
Wouter Lanneer +3 more
doaj +1 more source
Optimal Power Flow for radial and mesh grids using semidefinite programming
TecnoLógicas, 2017 This paper presents a convex formulation for optimal power flow (OPF) in both radial and meshed grids. A semidefinite programming (SDP) approximation transforms the quadratic non-convex model into a relaxed convex quadratic model, which can be more ...
Oscar D. Montoya-Giraldo +2 more
doaj