Results 31 to 40 of about 1,876,985 (311)

Regularized threshold iteration method for impulsive noise suppression in underwater acoustic communication

Dianxin kexue, 2019
Impulsive noise interference can seriously affect the performance of underwater acoustic communication systems.An impulsive noise suppression method based on regularized threshold iteration was presented.Firstly,the null subcarrier matrix was used to ...
Nana LI, Youming LI, Mingchen YU, Qianqian LU   +3 more
doaj   +2 more sources

Impulsive noise removal image ehancement technique [PDF]

International Journal on Intelligent Electronic Systems, 2007
Several areas like remote sensing, biomedical analysis, and computer vision require good image contrast and details for better interpretations and diagnoses’s. In the literature various image enhancement algorithms have been proposed to improve the perceptual aspects of the image for poorly contrasted images.
Subrajeet Mohapatra, Pankaj Kumar Sa, Banshidhar Majhi   +2 more
openaire   +1 more source

A TC-Based Multicomponent LFM Signal Characterization Method Under Impulsive Noise and Its Application

IET Signal Processing
The burst-like and high-amplitude characteristics of impulsive noise, which markedly differ from those of Gaussian noise, render methods based on the Gaussian assumption unable to accurately characterize signals under impulsive noise.
Weiwei Shang, Yong Guo, Lidong Yang
doaj   +1 more source

Modelling impulsive noise in indoor powerline communication systems

Signal, Image and Video Processing, 2020
Powerline communication (PLC) is an emerging technology that has an important role in smart grid systems. Due to making use of existing transmission lines for communication purposes, PLC systems are subject to various noise effects. Among those, the most
Oktay Karakuş, E. Kuruoglu, M. Altınkaya   +2 more
semanticscholar   +1 more source

Robust Distributed Estimation over Multiple Access Channels with Constant Modulus Signaling

, 2009
A distributed estimation scheme where the sensors transmit with constant modulus signals over a multiple access channel is considered. The proposed estimator is shown to be strongly consistent for any sensing noise distribution in the i.i.d.
Narasimhamurthy, Adarsh B., Tepedelenlioglu, Cihan   +1 more
core   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito, Chiara Meneghini, Alice Galli, Luca Gallo, Pierfrancesco Mitrotti, Paola Dimartino, Marianna Inglese, Cinzia Zatti, Alessandro Lupini, Andrea Pilotto, Alessandro Padovani, Micol Avenali, Enza Maria Valente, Cristina Tassorelli, Silvia P. Caminiti   +14 more
wiley   +1 more source

Diffusion Robust Variable Step-Size LMS Algorithm Over Distributed Networks

IEEE Access, 2018
In this paper, we propose a novel diffusion robust variable step-size least mean square (DRVSS-LMS) algorithm that is insensitive to impulsive noise for distributed estimation in the network.
Wei Huang, Lindong Li, Qiang Li, Xinwei Yao   +3 more
doaj   +1 more source

Correntropy-based DOA estimation algorithm under impulsive noise environments

EURASIP Journal on Wireless Communications and Networking, 2020
In this paper, the direction of arrival (DOA) estimation of signals in the presence of impulsive noise environment is studied. Complex isotropic symmetric alpha-stable (SαS) random variables are modeled as impulsive noise, then a novel second-order ...
Jin Chen, Sheng Guan
doaj   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

Impulse noise generated by starter pistols [PDF]

International Journal of Audiology, 2013
This study describes signals generated by .22 and .32 caliber starter pistols in the context of noise-induced hearing loss risk for sports officials and athletes.Acoustic comparison of impulses generated from typical .22 and .32 caliber starter pistols firing blanks were made to impulses generated from comparable firearms firing both blanks and live ...
Deanna K, Meinke, Donald S, Finan, Jacob, Soendergaard, Gregory A, Flamme, William J, Murphy, James E, Lankford, Michael, Stewart   +6 more
openaire   +2 more sources