Results 51 to 60 of about 123,247 (141)

A Hybrid Double Zero MVDR Beamformer That is Universal Over the Number of Second Order Notches

IEEE Access
In a dynamic environment, close-range and fast-moving interferers transit the resolution cells rapidly, challenging the minimum variance distortionless response (MVDR) beamformer’s ability to place accurate notches in each interferer’s ...
Savas Erdim, John R. Buck
doaj   +1 more source

Constrained Widely Linear Beamforming Antijammer Technique for Satellite-Borne Distributed Sensor Data Acquisition System

International Journal of Distributed Sensor Networks, 2016
Widely linear (WL) adaptive beamforming algorithms are proposed based on constrained minimum variance (CMV) and constrained constant modulus (CCM) criteria, respectively, to fully exploit both the desired signal and interferences' noncircularity ...
Yongyong Wang, Guang Liang, Lulu Zhao, Jinpei Yu, Lianxing He   +4 more
doaj   +1 more source

Adaptive Beamforming for Wireless Communications [PDF]

, 1996
The increasing demand for mobile and cellular services has resulted in the near-depletion of allocated frequency resources, especially in urban areas. In order to absorb more and more customers in a wireless communication system, we face the challenge of improving the system capacity without degradation in the quality of services.
K. Cho, A. Sandhu, John Litva, T. Lo
openaire   +2 more sources

A Broadband Beamformer Suitable for UUV to Detect the Tones Radiated from Marine Vessels

Sensors, 2018
In this paper, the issue that the underwater unmanned vehicle (UUV) with a sonar array achieves the passive detection of vessel targets by detecting the tones radiated from the targets is considered.
Shilong Ma, Yilin Wang, Nan Zou, Guolong Liang   +3 more
doaj   +1 more source

Notice of Violation of IEEE Publication Principles: Robust Adaptive Beamforming Using Support Vector Machines

IEEE Access, 2020
A robust adaptive beamformer based on the support vector machines is proposed to solve the rapid degradation of the performance of minimum variance distortionless response beamformer when the steering vector is mismatched. The proposed beamformer assumes
Xiaoying Ren, Yingmin Wang, Tuo Guo, Qi Wang   +3 more
doaj   +1 more source

ADAPTIVE BEAMFORMING FOR ACOUSTIC COMMUNICATIONS

Le Journal de Physique Colloques, 1990
The basic factors which need to be considered in the design of a practical through water communications system utilising an adaptive beamformer at the receiver are examined. Simulation results demonstrate the feasibility of using such a scheme. It is clear that the multipath phenomenon which has proved so detrimental to a high data rate through water ...
G.S. Howe, A.E. Adams, A.G.J. Holt, O.R. Hinton   +3 more
openaire   +3 more sources

Synaptic inhibitory dynamics drive benzodiazepine response in pediatric status epilepticus

Epilepsia, EarlyView.
Abstract Objective Pediatric status epilepticus (SE) is a medical emergency associated with significant morbidity. Benzodiazepines (BZPs) are the current first‐line treatment, but do not work in more than one third of children presenting with SE. Animal studies have shown that SE can cause changes in synaptic inhibition signaling that can ultimately ...
Tommaso Fedele, Richard J. Burman, Anne Steinberg, Giorgio Selmin, Georgia Ramantani, Richard E. Rosch   +5 more
wiley   +1 more source

Impact of a moving noise masker on speech perception in cochlear implant users.

PLoS ONE, 2015
ObjectivesPrevious studies investigating speech perception in noise have typically been conducted with static masker positions. The aim of this study was to investigate the effect of spatial separation of source and masker (spatial release from masking ...
Tobias Weissgerber, Tobias Rader, Uwe Baumann   +2 more
doaj   +1 more source

The Neural Oscillatory Basis of Perspective‐Taking in Autistic and Non‐Autistic Adolescents Using Magnetoencephalography

European Journal of Neuroscience, Volume 61, Issue 8, April 2025.
ABSTRACT Taking another's perspective is a high‐level mental skill underlying many aspects of social cognition. Perspective‐taking is usually an embodied egocentric process whereby people mentally rotate themselves away from their physical location into the other's orientation.
Robert A. Seymour, Gina Rippon, Gerard Gooding‐Williams, Hongfang Wang, Klaus Kessler   +4 more
wiley   +1 more source

AN ADAPTIVE BEAMFORMER BASED ON ADAPTIVE COVARIANCE ESTIMATOR [PDF]

Progress In Electromagnetics Research M, 2014
Based on the Minimum Variance Distortionless Response-Sample Matrix Inversion (MVDR- SMI) method, we propose a novel Adaptive Covariance Estimator (MVDR-ACE) beamformer for adaptation to multiple interference environments. The MVDR-ACE beamformer iteratively determines a minimum number of data samples required while maintaining its average signal-to ...
openaire   +1 more source