Results 131 to 140 of about 316,357 (300)

Cooperative differential space-time spreading for the asynchronous relay aided CDMA uplink using interference rejection spreading code [PDF]

open access: yes, 2010
—This letter proposes a differential Space–Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchroniza-tion is required at the cooperating nodes.
Sheng Chen   +5 more
core  

Simulation and Analysis on Performance of Space-Time Coding in MIMO

open access: yesDianxin kexue, 2015
The theory of layered space-time code,space-time block code,space-time trellis code were introduced, and the technology of combing STC and OFDM was researched.Then,several MIMO system models were built in different STC conditions and their BER ...
Shequan Jiang, Jing Wang, Chao Peng
doaj   +2 more sources

Frequency-modulated continuous waves controlled by space-time-coding metasurface with nonlinearly periodic phases. [PDF]

open access: yesLight Sci Appl, 2022
Ke JC   +12 more
europepmc   +1 more source

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

Turbo Detection of Channel-Coded Space-Time Signals Using Sphere Packing Modulation [PDF]

open access: yes, 2004
A recently proposed space-time signal construction method that combines orthogonal design with sphere packing, referred to here as (STBC-SP), has shown useful performance improvements over Alamouti’s conventional orthogonal design.
Alamri, O.   +5 more
core  

Space-time unified coordinate coding model for digital twin cities

open access: yesBig Earth Data
The data of the digital twin city is voluminous and diverse, with the characteristics of massive, multi-dimensional, real-time, and unstructured. Therefore, how to realize data integration and efficient management is crucial to the value release of the ...
Huangchuang Zhang, Ge Li
doaj   +1 more source

Developmental and Epileptic Encephalopathy due to Biallelic Pathogenic Variants in PIGM

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective PIGM encodes a critical enzyme in the glycosylphosphatidylinositol (GPI)‐anchor biosynthesis pathway. While promoter‐region mutations in PIGM have been associated with a relatively mild phenotype characterized by portal vein thrombosis and absence seizures, recent evidence suggests that coding‐region mutations result in a more severe
Júlia Sala‐Coromina   +11 more
wiley   +1 more source

A Space-Time Spreading Assisted Multicarrier DS-CDMA System using OVSF Codes Employing Adaptive Mode Switching Thresholds and Adaptive Modulation [PDF]

open access: yes, 2005
The Concept of Space-Time Spreading (STS) assisted, Adaptive Quadrature Amplitude Modulation (AQAM) aidedMC DS-CDMAis introduced. The AQAMmode-switching thresholds are determined using an on-line real-time Bit-Error-Ratio (BER) based learning procedure ...
Wei, H, Yang, L-L., Hanzo, L.
core  

Reperfusion‐Dependent Outcomes After Endovascular Thrombectomy Stratified by NIHSS‐ASPECTS Clinical‐Core Mismatch

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This analysis evaluates the effect of successful reperfusion on functional outcomes after MT, stratified by admission National Institutes of Health Stroke Scale (NIHSS) and Alberta Stroke Program Early CT Score (ASPECTS) as surrogates for clinical‐core mismatch, using multicenter registry data.
Felix Schlicht   +53 more
wiley   +1 more source

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling   +16 more
wiley   +1 more source

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