Results 61 to 70 of about 517,702 (295)

Research on PDMA communication system based on complete complementary sequence

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
Pattern division multiple access (PDMA) is a new non-orthogonal multiple access (NOMA) technology. It is proposed to meet the challenge of 5G large-scale connectivity and high-frequency spectral efficiency.
Shufeng Li, Baoxin Su, Libiao Jin
doaj   +1 more source

Performance of chaos-based communication systems under the influence of coexisting conventional spread-spectrum systems [PDF]

open access: yes, 2014
Author name used in this publication: Francis C. M. LauAuthor name used in this publication: Chi K.
Lau, FCM, Tse, CKM
core   +1 more source

CX3CL1 in Early Detection of Alzheimer's Disease: Plasma Dynamics Across Age and Disease Stages

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Backgrounds Alzheimer's disease (AD) is characterized by amyloid‐beta plaques, tau tangles, and neuroinflammation. C‐X3‐C motif chemokine ligand 1 (CX3CL1, also known as fractalkine), a neuroimmune chemokine implicated in AD pathogenesis, shows inconsistent alterations in plasma/serum across studies.
Ling Wang   +6 more
wiley   +1 more source

M-ary Cyclic Shift Keying Spread Spectrum Underwater Acoustic Communications Based on Virtual Time-Reversal Mirror

open access: yesSensors, 2019
Underwater acoustic communications are challenging because channels are complex, and acoustic waves when propagating in the ocean are subjected to a variety of interferences, such as noise, reflections, scattering and so on.
Feng Zhou   +5 more
doaj   +1 more source

RF/SS system for wireless local loop [PDF]

open access: yes, 1998
In this communication we deal with the use of direct sequence spread spectrum tecllniques for radio transmission in the local loop. We present a direct sequence spread-spectrum system that is being developed to transmit signals from ISDN-U ...
Burgos, Mateo   +5 more
core  

Logic Programming approaches for routing fault-free and maximally-parallel Wavelength Routed Optical Networks on Chip (Application paper) [PDF]

open access: yes, 2017
One promising trend in digital system integration consists of boosting on-chip communication performance by means of silicon photonics, thus materializing the so-called Optical Networks-on-Chip (ONoCs). Among them, wavelength routing can be used to route
Bertozzi, Davide   +3 more
core   +2 more sources

Vestibular Patient Journey: Insights From Vestibular Disorders Association (VeDA) Registry

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Vestibular symptoms impose a high burden of disability. Understanding real‐world diagnostic and treatment pathways can identify care gaps and guide interventions. We aimed to characterize symptom profiles, diagnostic trends, provider involvement, and treatment patterns in vestibular disorders.
Ali Rafati   +10 more
wiley   +1 more source

Efficacy of Intermittent Theta‐Burst Stimulation for Prolonged Disorders of Consciousness: A Prospective, Randomized, Controlled Trial

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Emerging evidence suggests that low‐frequency neural oscillations are dynamically regulated by consciousness levels, with the recovery of low cortical activity potentially serving as a neurophysiological substrate for conscious emergence. Targeted enhancement of these low‐frequency rhythms in patients with disorders of consciousness
Chuan Xu   +10 more
wiley   +1 more source

Comparative analysis between chaotic sequence and PN sequence in spread spectrum system

open access: yesJournal of Measurement Science and Instrumentation, 2016
This paper introduces two kinds of sequences used in spread spectrum communication system:pseudo-noise(PN)sequence generated by linear feedback shift register(LFSR),such as m-sequence and Gold sequence,and the chaotic sequence generated by the ...
GAO Peng-peng   +5 more
doaj  

SIMULINK Simulation Implementation of DS/FH Hybrid Spread Spectrum Communication System

open access: yesMATEC Web of Conferences, 2018
The basic principle of DS/FH hybrid spread spectrum communication system is introduced. The Simulink simulation software is used to establish the system simulation model, and the dynamic simulation of the system is realized.
Ma Bing, He Ye, Ma Hualong, Yu Changren
doaj   +1 more source

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