Results 41 to 50 of about 453 (143)
Sensors, 2022 This paper considers the problem of finding the position of a passive target using noisy time difference of arrival (TDOA) measurements, obtained from multiple transmitters and a single receiver. The maximum likelihood (ML) estimator’s objective function
Maja Rosić +3 more
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Randomized Hypergraph States and Their Entanglement Properties
Annalen der Physik, Volume 538, Issue 1, January 2026.Randomized hypergraph (RH) states are mixed states that extend the concept of randomized graph states to multi‐qubit hypergraphs subject to probabilistic gate imperfections. By modeling noisy multi‐qubit operations, this work reveals nonmonotonic behavior in bipartite and multipartite entanglement, derives analytical witnesses for specific hypergraph ...
Vinícius Salem +2 more
wiley +1 more source
Robust Spectral and Energy Efficiency Tradeoff for RIS‐Aided Multi‐User Communication
IET Communications, Volume 20, Issue 1, January/December 2026.In this work, an RIS‐aided multi‐user network with imperfect CSI is investigated. Correspondingly, we focus on balancing SE and EE through the collaborative design of the base station (BS)'s precoding matrix and the RIS's phase shifts, which consider the transmit power budget and the channel uncertainties constraints.
Xiandeng He, Yilin Wang, Shun Zhang
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IEEE Transactions on NetworkingWireless time-sensitive networking (WTSN) is essential for Industrial Internet of Things. We address the problem of minimizing time slots needed for WTSN transmissions while ensuring reliability subject to interference constraints -- an NP-hard task. Existing semidefinite programming (SDP) methods can relax and solve the problem but suffer from high ...
Zhouyou Gu +3 more
openaire +2 more sources
IET Communications, Volume 20, Issue 1, January/December 2026.This paper investgates a unmanned aerial vehicle‐assisted non‐orthogonal multiple access‐integrated sensing and communication system, which fuses the UAV's echo signal and target position by employing the extended Kalman filter algorithum to achieve high‐precision prediction of the target trajectory.
Dongsheng Han, Zian Wang, Yan Wang
wiley +1 more source
Secure Transmission in ISAC Systems Aided by Active STAR‐RIS
IET Communications, Volume 20, Issue 1, January/December 2026.This paper investigates the secure transmission problem in an active simultaneous transmitting and reflecting intelligent reflecting surfaces (STAR‐RIS)‐aided integrated sensing and communication downlink system. Our objective is to maximize the sum secrecy rate by jointly optimizing the base station beamforming vectors, the sensing signal covariance ...
Baofeng Ji, Xinhao Guo, Shahid Mumtaz
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Dual IRS‐Assisted Secure Communication for Untrusted Two‐Way AF Relay Network
IET Communications, Volume 20, Issue 1, January/December 2026.To address the performance loss caused by the difficulty of balancing phase configuration requirements in single‐IRS‐assisted asymmetric bidirectional secure relay communication, this paper proposes a dual‐IRS collaborative optimization framework. Specifically, each user is configured with a dedicated IRS to enable personalized signal reflection, and ...
Yibo Wang, An Li, Lisu Yu, Kaijun Peng
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Single‐Shot Initial Mutual Localization for Micro Aerial Swarms
IET Cyber-Systems and Robotics, Volume 8, Issue 1, January/December 2026.ABSTRACT Initial mutual localization of micro aerial swarms remains a challenging problem and is essential for establishing a common reference frame before coordinated flight. This task is difficult due to the limited scene overlap between nonadjacent drones, as well as sparse and low‐quality feature correspondences in environments with insufficient ...
Xiangyong Wen +4 more
wiley +1 more source
IET Control Theory &Applications, Volume 20, Issue 1, January/December 2026.A switched observer design methodology for semilinear parabolic PDEs is developed using adaptive sensor configurations and LMI‐based synthesis conditions. The approach guarantees exponential stability through polynomial parameterization and sum‐of‐squares programming, enabling computationally tractable observer design for infinite‐dimensional systems ...
Ivan Francisco Yupanqui Tello +2 more
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Collaborative Beamforming for Multi‐Target Localization Using Passive Anchors
Electronics Letters, Volume 62, Issue 1, January/December 2026.A joint collaborative beamforming strategy for passive sensor network is proposed active sensors generate collaborative beam to power up the passive sensors and attain accurate self‐localization. ABSTRACT Using wireless passive sensor nodes as anchors is a cost‐effective way for localization system.
Xingjun Lai +3 more
wiley +1 more source