Results 71 to 80 of about 5,210,021 (184)

Uncertainty‐Aware Coordinated Transmission‐Distribution Dispatch via GNN‐Augmented Distributionally Robust Optimal Power Flow

open access: yesIET Smart Grid, Volume 9, Issue 1, January/December 2026.
The proposed LA‐DROPF framework integrates graph neural network surrogates with Wasserstein distributionally robust optimisation and CVaR tail‐risk control for coordinated transmission—distribution dispatch under deep renewable uncertainty. A hybrid Benders—ADMM decomposition enables privacy‐preserving multi‐area coordination with formal convergence ...
Aamir Nawaz   +2 more
wiley   +1 more source

Secure Performance Analysis of Satellite-Terrestrial Networks-Assisted Backscatter Device

open access: yesJordanian Journal of Computers and Information Technology
This study investigates the secrecy performance of a satellite–backscatter device communication system in the presence of a potential eavesdropper.
Hong Nhu Nguyen   +4 more
doaj   +1 more source

Artificial Noise Aided Precoding With Imperfect CSI in Full-Duplex Relaying Secure Communications

open access: yesIEEE Access, 2018
In Rayleigh fading channels, to enhance the secrecy performance of wireless communication systems and efficiently disturb the interception of eavesdroppers, the multiple-antenna source node utilizes the artificial noise aided precoding (ANP) strategy ...
Yuanjian Li   +4 more
doaj   +1 more source

Optimizing Heart Risk Attack Diagnosis by Hybridizing XGBoost and Chaotic Binary Bat Algorithm

open access: yesApplied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.
Accurate feature selection remains a critical challenge in heart disease prediction due to high‐dimensional data and complex feature interactions. This study proposes a hybrid framework that integrates extreme gradient boosting with a chaotic binary bat algorithm to improve feature‐selection efficiency and predictive performance.
Syaiful Anam   +4 more
wiley   +1 more source

Security Tradeoffs in Rate Splitting Multiple Access: Optimal Signal Splitting vs Revealing [PDF]

open access: yes, 2022
This paper considers the secrecy performance of rate splitting (RS) scheme in multi-user multiple-input single-output (MU-MISO) systems. The split of the users' messages into common and private parts can enhance the sum-rate of the communication systems.
Clerckx, B, Salem, A, Masouros, C
core   +1 more source

Safe and Quickest Medical Image Encryption Using Logistic Map Derived S‐Boxes and Galois Field

open access: yesComputational and Mathematical Methods, Volume 2026, Issue 1, 2026.
The pseudorandomness, simplicity of use, and extreme sensitivity to even the slightest change in the initial value and handling parameters make chaotic maps attractive. The use of medical imaging to diagnose illnesses has grown in significance. These photographs need strong security measures because they are exchanged over public networks.
Mahwish Bano   +5 more
wiley   +1 more source

Secrecy sum-rate analysis of massive MIMO systems under dual-threat attacks using normalization methods

open access: yesDigital Communications and Networks, 2019
Massive Multiple Input Multiple Output (MIMO) has been considered as an emerging technology to enhance the spectral and energy efficiency for the upcoming wireless communication systems.
Kishan Neupane, Rami J. Haddad
doaj   +1 more source

Secrecy Enhancement of Cooperative NOMA Networks With Two-Way Untrusted Relaying

open access: yesIEEE Access, 2020
The two-way relaying (TWR) technique has been confirmed to achieve higher spectral efficiency and average sum rate compared with the one-way relaying (OWR) technique in ultra-dense next generation networks with limited spectal resources.
Mona Awad   +5 more
doaj   +1 more source

Enhancing Security of Primary User in Underlay Cognitive Radio Networks With Secondary User Selection

open access: yesIEEE Access, 2018
This paper investigates the effect of multiuser gain provided by the secondary user selection on the secrecy performance of the primary users. We first propose a simple scheme where the user with the minimal interference channel is selected, and derive a
Mian Qin   +3 more
doaj   +1 more source

Rényi Entropy Rate of Stationary Ergodic Processes

open access: yes, 2023
— In this paper, we examine the Rényi entropy rate of stationary ergodic processes. For a special class of stationary ergodic processes, we prove that the Rényi entropy rate always exists and can be approximated by its defining sequence at most ...
Yonglong Li   +7 more
core   +1 more source

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