Results 21 to 30 of about 318 (139)

Direction-of-Arrival Estimation Based on Sparse Representation of Fourth-Order Cumulants

IEEE Access, 2023
The actual underwater environmental noise is often spatial colored, which results in severe degradation of the performance of the underwater direction of arrival (DOA) estimation method based on the assumption of white noise.
Chuanxi Xing, Saimeng Dong, Zhiliang Wan
doaj   +1 more source

Mode Separation for Multimodal Ultrasonic Lamb Waves Using Dispersion Compensation and Independent Component Analysis of Forth-Order Cumulant

Applied Sciences, 2019
Ultrasonic Lamb wave testing has been successfully applied in nondestructive testing. However, because of Lamb wave multimodal and dispersion characteristics, the received signals are often multimodal and overlapping, which makes them very complicated ...
Xiao Chen, Dandan Ma
doaj   +1 more source

Sixth-Second Order Normalized Cumulant Blind Equalization Algorithm Based on Oversampling

Dianxin kexue, 2014
Most existing blind equalization algorithms rely on partial or complete channel identification, but the channel order estimation is always a difficult task.
Xiaoqin Zhang, Yongsheng Hu, Liyi Zhang
doaj   +2 more sources

Comparative analysis of signal models for microscopic fractional anisotropy estimation using q-space trajectory encoding

NeuroImage, 2021
Microscopic diffusion anisotropy imaging using diffusion-weighted MRI and multidimensional diffusion encoding is a promising method for quantifying clinically and scientifically relevant microstructural properties of neural tissue.
Leevi Kerkelä, Fabio Nery, Ross Callaghan, Fenglei Zhou, Noemi G. Gyori, Filip Szczepankiewicz, Marco Palombo, Geoff J.M. Parker, Hui Zhang, Matt G. Hall, Chris A. Clark   +10 more
doaj   +1 more source

Digital modulation recognition based on discriminative restricted Boltzmann machine

Tongxin xuebao, 2021
In order to improve the performance of digital modulation recognition under high dynamic signal-to-noise ratio, a joint modulation recognition method based on high-order cumulant and discriminative restricted Boltzmann machine was proposed, which ...
Zhengquan LI, Yuan LIN, Mengya LI, Yang LIU, Qiong WU, Song XING   +5 more
doaj   +2 more sources

Non-uniform Estimates in the Approximation by the Irwin Law

Lithuanian Journal of Statistics, 2016
We consider an approximation of a cumulative distribution function F(x) by the cumulative distributionfunction G(x) of the Irwin law. In this case, a function F(x) can be cumulative distribution functions of sums (products) ofindependent (dependent ...
Kazimieras Padvelskis, Ruslan Prigodin
doaj   +1 more source

Risk Assessment of Distribution Network Based on Dirichlet Process Mixture Model and the Cumulant Method

Inventions
To address the increased operational risk in distribution network caused by the grid integration of distributed wind power, a distribution network risk assessment method that combines a Dirichlet process mixture model (DPMM) with the cumulant method (CM)
Yuxuan Huang, Yuwei Chen, Zhenguo Shao, Feixiong Chen, Yunting Shao, Yifan Zhang, Changming Chen   +6 more
doaj   +1 more source

Active distribution network feeder loop closing current assessment based on DK2-PLF

电力工程技术
The research of loop closing current assessment has great significance for distribution network feeder loop closing operation to supply power. In order to enhance the accuracy of active distribution network feeder loop closing current calculation, an ...
HUANG Yue, RONG Na, CHEN Shiwei, GUO Yuanping   +3 more
doaj   +1 more source

An exciting Approach to Theoretical Spectroscopy

Advanced Science, EarlyView.
ABSTRACT Theoretical spectroscopy, and more generally, electronic‐structure theory, are powerful concepts for describing the complex many‐body interactions in materials. They cover methods from ground‐state properties to lattice excitations and light‐matter interaction, including time‐resolved variants.
Martí Raya‐Moreno, Alexander Buccheri, Noah Alexy Dasch, Nasrin Farahani, Ignacio Gonzalez Oliva, Andris Gulans, Seokhyun Hong, Manoar Hossain, Hannah Kleine, Martin Kuban, Sven Lubeck, Benedikt Maurer, Pasquale Pavone, Fabian Peschel, Daria Popova‐Gorelova, Lu Qiao, Elias Richter, Santiago Rigamonti, Ronaldo Rodrigues Pela, Maximilian Schebek, Kshitij Sinha, Daniel T. Speckhard, Jan Stutz, Sebastian Tillack, Dmitry Tumakov, Jānis Užulis, Mara Voiculescu, Cecilia Vona, Mao Yang, Claudia Draxl   +29 more
wiley   +1 more source

Cumulant Green's function methods for molecules

Faraday Discussions
A detailed derivation of cumulant Green’s function methods is presented, and the performance of this scheme in describing outer-valence quasiparticle and satellite energies of molecular systems is explored.
Loos, Pierre-François, Marie, Antoine, Ammar, Abdallah   +2 more
openaire   +3 more sources