Results 81 to 90 of about 3,924,808 (301)

The Role of Calcitonin Gene‐Related Peptide in High‐Altitude Headache: A Prospective Field Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective High‐altitude headache (HAH) is a common neurological condition associated with rapid ascent to high altitude. The pathophysiological mechanisms underlying HAH remain incompletely understood. Calcitonin gene‐related peptide (CGRP), a neuropeptide implicated in migraine pathophysiology, may play a key role in the pathophysiology of ...
Roman Schniepp   +4 more
wiley   +1 more source

A novel ULA-based geometry for improving AOA estimation

open access: yesEURASIP Journal on Advances in Signal Processing, 2011
Due to relatively simple implementation, Uniform Linear Array (ULA) is a popular geometry for array signal processing. Despite this advantage, it does not have a uniform performance in all directions and Angle of Arrival (AOA) estimation performance ...
Akbari Farida   +1 more
doaj  

Ultra-Wideband Source Localization Using a Particle-Swarm-Optimized Capon Estimator from a Frequency-Dependent Channel Modeling Viewpoint

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We introduce a realistic frequency-dependent channel model for ultra-wideband (UWB) communication systems and develop a generalized broadband Capon spatial spectrum estimator for localization of multiple incoherently distributed scattering clusters. The
Chen Yifan, Dubey Vimal K
doaj   +1 more source

Analysis of Multi-Antenna GNSS Receiver Performance under Jamming Attacks

open access: yesSensors, 2016
Although antenna array-based Global Navigation Satellite System (GNSS) receivers can be used to mitigate both narrowband and wideband electronic interference sources, measurement distortions induced by array processing methods are not suitable for high ...
Niranjana Vagle   +2 more
doaj   +1 more source

Introduction to Array Processing

open access: yes, 2014
The purpose of this chapter is to give some background material on array signal processing, which serves as a more detailed introduction to the remaining chapters.
Viberg, Mats,
core  

Bandwidth reduction for video processing in consumer systems [PDF]

open access: yes, 2001
The architecture of the present video processing units in consumer systems is usually based on various forms of processor hardware, communicating with an off-chip SDRAM memory. Examples of these systems are currently available MPEG encoders and decoders,
Jaspers, E   +3 more
core   +2 more sources

Prognostic Value of Neurofilament Light Chain and Glial Fibrillary Acidic Protein in ALD‐Related Myelopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak   +4 more
wiley   +1 more source

Thiran Filters for Wideband DSP-Based Multi-Beam True Time Delay RF Sensing Applications

open access: yesSensors
The ability to sense propagating electromagnetic plane waves based on their directions of arrival (DOAs) is fundamental to a range of radio frequency (RF) sensing, communications, and imaging applications.
Sirani M. Perera   +2 more
doaj   +1 more source

Lorentzian Operator for Angular Source Localization with Large Array

open access: yesJournal of Telecommunications and Information Technology, 2015
Source localization problem consists of an ensemble of techniques that are used to obtain spatial information of present radiation in given medium of propagation, with a constraint of the antenna geometry and the characteristics of radiating sources ...
Said Safi, Miloud Frikel
doaj   +1 more source

Array Processing in the Face of Nonidealities

open access: yes, 2014
Real-world sensor arrays are typically composed of elements with individual directional beampatterns and are subject to mutual coupling, cross-polarization effects as well as mounting platform reflections. Errors in the array elements’ positions are also
Koivunen, Visa   +2 more
core  

Home - About - Disclaimer - Privacy