Results 71 to 80 of about 173,505,536 (199)

Cyberattack‐Resilient Fractional‐Order PPI Control for Frequency Regulation in PV‐Integrated Power Systems

CAAI Transactions on Intelligence Technology, Volume 11, Issue 4, Page 1062-1087, August 2026.
ABSTRACT Load‐frequency control (LFC) comprises a primary process in interconnected electrical power systems, playing a critical role in maintaining the stability and reliability of the electrical grid. It is of paramount importance that the designed controller functions in an optimal manner, particularly with regard to the compression of area ...
Bora Çavdar, Erdinç Şahin, Fatih Mehmet Nuroğlu   +2 more
wiley   +1 more source

A Priori-Based Subarray Selection Algorithm for DOA Estimation

Sensors, 2020
A finer direction-of-arrival (DOA) estimation result needs a large and dense array; it may, however, encounter the mutual coupling effect, which degrades the performance of DOA estimation.
Linghao Zeng, Guanghua Zhang, Chongzhao Han   +2 more
doaj   +1 more source

An Active Beam‐Reconfigurable Retrodirective Array

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
The proposed beam‐reconfigurable retrodirective array not only enables retroreflection toward the signal source but also achieves flexible beam steering via a tunable reflection plate, offering a viable solution for real‐time multipoint communication and multitarget wireless power transfer.
Wen Yue Wei, Yan Shi, Li Jing Yang, Jun Wei Wu, Qiang Feng, Long Li   +5 more
wiley   +1 more source

A Comprehensive Review of Direction-of-Arrival Estimation and Localization Approaches in Mixed-Field Sources Scenario

IEEE Access
Direction-of-arrival (DOA) estimation plays a crucial role in array signal processing across various domains, including radar, sonar, wireless communications, and seismic exploration. However, traditional DOA techniques often assume either far-field (FF)
A. Molaei, B. Zakeri, S. M. H. Andargoli, M. A. B. Abbasi, V. Fusco, O. Yurduseven   +5 more
semanticscholar   +1 more source

Transcriptomics Analysis Reveals Dual Axes of Metabolic and Immune Dysregulation in the Progression of NAFLD to HCC

Natural Sciences, Volume 6, Issue 3, July 2026.
The mechanisms driving the progression of NAFLD through NASH, cirrhosis and HCC are unclear. In this study, we have comprehensively analyzed multi‐cohort transcriptomics data of the whole NAFLD spectrum to unlock the paradigm changes in gene expression and its regulation.
Anusha Patodia, Harikeshav Karthik, Sulagna Basu, Varshini Venkatesan, Rakesh Pandey, Gowri Manohari Balachander   +5 more
wiley   +1 more source

Direction-of-Arrival Tracking Scheme for DS/CDMA Systems: Direction Lock Loop [PDF]

, 2004
In this paper, a new direction-of-arrival (DOA) tracking algorithm, direction lock loop (DiLL), is proposed for wireless direct-sequence code-division multiple-access systems.
Seo, Dongyoun, D. Seo, Y.-H. Lee, Kwon, Hyuck M, Lee, Yong-Hwan, Lee, Kwang Bok, K.B. Lee, Min, Seunghyun, Lee, Kwangbok, S. Min, Kwon, Hyuck M., Lee, Yong H., H.M. Kwon   +12 more
core   +2 more sources

Super-resolution diffractive neural network for all-optical direction of arrival estimation beyond diffraction limits

Light: Science & Applications
Wireless sensing of the wave propagation direction from radio sources lays the foundation for communication, radar, navigation, etc. However, the existing signal processing paradigm for the direction of arrival estimation requires the radio frequency ...
Sheng Gao, Hang Chen, Yichen Wang, Zhengyang Duan, Haiou Zhang, Zhi Sun, Yuan Shen, Xing Lin   +7 more
semanticscholar   +1 more source

DIRECTION OF ARRIVAL USING PCA NEURALNETWORKS [PDF]

This paper adapted the neural network for the estimating of the direction of arrival (DOA). It uses an unsupervised adaptive neural network with APEX algorithm to extract the principal components that in turn, are used by Capon method to estimate the DOA,
V. A. Mahomud, S. M. R. Taha, N. K. Wafi, A. S. Hadi   +3 more
core   +1 more source

Joint Estimation of DOA and TDOA of Multiple Reflections by Matrix Pencil in Mobile Communications

IEEE Access, 2019
This paper presents the joint estimation of the direction of arrival (DOA) and the time difference of arrival (TDOA) for multipath signals, which is the central issue for mobile communications.
Yu Zheng, Yongzhi Yu
doaj   +1 more source

Direction-of-arrival (DOA) estimation using deep-neural-network (DNN)

, 2020
Direction-of-arrival (DOA) estimation is a key area in the field of antenna array signal processing. It has great significance in digital communication, IoT applications and national security.
Han, Dicong
core