Results 71 to 80 of about 122,557 (242)

Prediction of Central Post‐Stroke Pain by Quantitative Sensory Testing

open access: yesAnnals of Neurology, Volume 97, Issue 3, Page 507-520, March 2025.
Objective Among patients with acute stroke, we aimed to identify those who will later develop central post‐stroke pain (CPSP) versus those who will not (non‐pain sensory stroke [NPSS]) by assessing potential differences in somatosensory profile patterns and evaluating their potential as predictors of CPSP. Methods In a prospective longitudinal study on
Susanna Asseyer   +9 more
wiley   +1 more source

Macrocellular Propagation Prediction for Wireless Communications in Urban Environments

open access: yesJournal of Computer Science and Technology, 2010
In this paper, the signal propagation characteristics of urban environments are predicted by modeling important propagation parameters of the Code Division Multiple Access (CDMA) network for macrocells.
Moses E. Ekpenyong   +2 more
doaj  

Energy‐Aware Protocol Design and Evaluation of the PHY Layer in Satellite IoT

open access: yesInternational Journal of Satellite Communications and Networking, Volume 43, Issue 2, Page 61-76, March/April 2025.
ABSTRACT Direct‐to‐satellite communication for the Internet of Things (IoT) has attracted significant interest from both the scientific community and major telecommunications players. The integration of satellite connectivity in smartphones and IoT devices promises a transformative impact on critical applications such as environmental monitoring, asset
Simon Heine   +2 more
wiley   +1 more source

A simulation agent for efficient network evaluation in 3G cellular mobile radio planning

open access: yesJournal of Computer Science and Technology, 2009
An accurate procedure for evaluating the strong correlation and conflicting goals of coverage, capacity and Quality of Service (QoS) is required for efficient planning of 3G radio networks.
Joseph Isabona   +2 more
doaj  

The Alamouti Scheme with CDMA-OFDM/OQAM

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
This paper deals with the combination of OFDM/OQAM with the Alamouti scheme. After a brief presentation of the OFDM/OQAM modulation scheme, we introduce the fact that the well-known Alamouti decoding scheme cannot be simply applied to this modulation ...
Pierre Siohan   +2 more
doaj   +1 more source

Open vs Closed Access Femtocells in the Uplink

open access: yes, 2010
Femtocells are assuming an increasingly important role in the coverage and capacity of cellular networks. In contrast to existing cellular systems, femtocells are end-user deployed and controlled, randomly located, and rely on third party backhaul (e.g ...
Andrews, Jeffrey G.   +2 more
core   +1 more source

Design and Simulation of parallel CDMA System Based on 3D-Hadamard Transform

open access: yesDiyala Journal of Engineering Sciences, 2013
Future wireless systems aim to provide higher transmission data rates, improved spectral efficiency and greater capacity. In this paper a spectral efficient two dimensional (2-D) parallel code division multiple access (CDMA) system is proposed for ...
Ali T. Shaheen
doaj   +1 more source

Loosely synchronized spreading code aided network performance of quasi-synchronous UTRA-like TDD/CDMA systems

open access: yes, 2005
In this paper we investigate the achievable capacity of a UTRA-like Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system employing Loosely Synchronized (LS) spreading codes. The family of operational CDMA systems is interference limited,
Hanzo, L., Hua, W., Ni, S.
core  

Multi-code Multicarrier CDMA: Performance Analysis

open access: yesJournal of Communications Software and Systems, 2006
A new multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in afrequency selective fading channel. By allowing each user to transmit an M-ary code sequence, the proposed MC-MC-CDMA system can support various ...
Taeyoon Kim   +3 more
doaj  

Ant-colony-based multiuser detection for multifunctional-antenna-array-assisted MC DS-CDMA systems

open access: yes, 2008
A novel Ant Colony Optimization (ACO) based Multi-User Detector (MUD) is designed for the synchronous Multi-Functional Antenna Array (MFAA) assisted Multi-Carrier Direct-Sequence Code-Division Multiple-Access (MC DS-CDMA) uplink (UL), which supports both
Hanzo, L., Hu, B., Xu, C., Yang, L-L.
core   +1 more source

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