Results 1 to 10 of about 36,530 (229)

Research of mine wireless broadband transmission technology

open access: yesGong-kuang zidonghua, 2013
The paper put forward that mine wireless broadband transmission technology is a key technology to meet with requirements of mobile monitoring, video and voice communication on cutting face, and proposed that mine wireless broadband transmission should ...
SUN Ji-ping
doaj  

The Proof Is in the Eating: Lessons Learnt from One Year of Generative AI Adoption in a Science-for-Policy Organisation

open access: yesAI
This paper presents the key results of a large-scale empirical study on the adoption of Generative AI (GenAI) by the Joint Research Centre (JRC), the European Commission’s science-for-policy department.
Bertrand De Longueville   +6 more
doaj   +1 more source

A Hybrid Path-Oriented Code Assignment CDMA-Based MAC Protocol for Underwater Acoustic Sensor Networks

open access: yesSensors, 2013
Due to the characteristics of underwater acoustic channel, media access control (MAC) protocols designed for underwater acoustic sensor networks (UWASNs) are quite different from those for terrestrial wireless sensor networks.
Huifang Chen   +3 more
doaj   +1 more source

Ténica de Acceso Múltiple de Radio WCDMA

open access: yesPrisma Tecnológico, 2009
El presente artículo aborda los conceptos de acceso múltiple por división de códigos y ensanchamiento de espectro mediante códigos. Se explica cómo se generan y utilizan los códigos ortogonales y de pseudoruido, los cuales esparcen, canalizan y mezclan ...
Javier Castillo, Fernando Medina
doaj  

CDMA/OTFS Sensing Outperforms Pure OTFS at the Same Communication Throughput

open access: yesIEEE Open Journal of Vehicular Technology
There is a dearth of publications on the subject of spreading-aided Orthogonal Time Frequency Space (OTFS) solutions, especially for Integrated Sensing and Communication (ISAC), even though Code Division Multiple Access (CDMA) assisted multi-user OTFS ...
Hugo Hawkins   +3 more
doaj   +1 more source

Blind estimation of spreading sequence of CDMA signals based on Fast-ICA and performance analysis

open access: yesTongxin xuebao, 2011
The DS-CDMA signals can be divided into two types,the short-code(SC) and the long-code(LC) DS-CDMA signal.The existing methods are only used to estimate spreading sequences of SC-DS-CDMA signals,which cannot work for the LC-DS-CDMA signals.A new blind ...
LU Feng-bo, HUANG Zhi-tao, JIANG Wen-li
doaj   +2 more sources

Sequence Selection and Performance in DS/CDMA Systems

open access: yesSemina: Ciências Exatas e Tecnológicas, 2016
In this work key concepts on coding division multiple access (CDMA) communication systems have been discussed. The sequence selection impact on the performance and capacity of direct sequence CDMA (DS/CDMA) systems under AWGN and increasing system ...
Jefferson Santos Ambrosio   +2 more
doaj   +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  

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  

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

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