Results 11 to 20 of about 585,227 (330)

Radio Sensor for Monitoring of UMTS Mobile Terminals [PDF]

open access: yesRadioengineering, 2014
Relatively simple and low-cost radio sensor for monitoring of 3rd generation (3G) UMTS mobile terminals (i.e., phones) has been designed and practically tested. The main purpose of this sensor is to serve as an extending module that can be installed into
F. Kozak, P. Hudec
doaj   +2 more sources

Leveraging Wireless Broadband to Improve Police Land Mobile Radio Programming: Estimating the Resource Impact [PDF]

open access: yes, 2019
Despite rapid growth in criminological studies of police technology, examinations of police land mobile radios are absent in the literature. This is troubling given the central role mobile radios serve in police operations and their significant ...
Carter, Jeremy G.   +2 more
core   +1 more source

Channel Estimation for MIMO MC-CDMA Systems [PDF]

open access: yes, 2011
The concepts of MIMO MC-CDMA are not new but the new technologies to improve their functioning are an emerging area of research. In general, most mobile communication systems transmit bits of information in the radio space to the receiver.
Rajalakshmi, R.   +2 more
core   +2 more sources

Performance analysis of dedicated short range communications technology and overview of the practicability for developing countries

open access: yesThe Journal of Engineering, 2015
Vehicular communication is a widely researched field and aims at developing technologies that may complement systems such as the advanced driver assistance systems.
Vandana Bassoo   +2 more
doaj   +1 more source

Polynomial Manifold Interpolation for Direction Finding in the Presence of Mutual Coupling

open access: yesIEEE Access, 2019
Direction-of-arrival (DOA) estimation in the presence of mutual coupling among the antennas is an important problem in direction finding systems. To address the mutual coupling issue, a polynomial manifold interpolation approach is proposed in this paper.
Hongtao Duan   +4 more
doaj   +1 more source

Advanced Positioning and Location based services in 4G Mobile-IP Radio Access Networks [PDF]

open access: yes, 2004
2004 IEEE 15TH IEEE International Symposium on personal, indoor and mobile radio communications (PIMRC 2004), Barcelona, Spain, 5-8 september 2004.This paper proposes an evolved architecture from 3G networks to provide basic and advanced positioning ...
Montilla Bravo, Alberto   +2 more
core   +3 more sources

Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking

open access: yesInternational Journal of Antennas and Propagation, 2010
Wireless sensors emerged as narrowband, resource-constrained devices to provide monitoring services over a wide life span. Future applications of sensor networks are multimedia-driven and include sensor mobility.
Constantine G. Kakoyiannis   +1 more
doaj   +1 more source

A Simulation Framework for Multiple-Antenna Terminals in 5G Massive MIMO Systems

open access: yesIEEE Access, 2017
The recent interest in massive multiple in multiple out (MIMO) has spurred intensive work on massive MIMO channel modeling in the contemporary literature. However, current models fail to take the characteristics of terminal antennas into account.
Erik L. Bengtsson   +5 more
doaj   +1 more source

Compact, Slotted, Printed Antennas for Dual-Band Communication in Future Wireless Sensor Networks

open access: yesInternational Journal of Antennas and Propagation, 2013
Inverted-F antennas (IFAs) are a primary choice to implement the radiating system of portable devices. A tried and tested idea can remain topical if proven useful in modern applications.
Constantine G. Kakoyiannis   +1 more
doaj   +1 more source

A Framework for Automatic Web Service Discovery Based on Semantics and NLP Techniques

open access: yesAdvances in Multimedia, 2011
As a greater number of Web Services are made available today, automatic discovery is recognized as an important task. To promote the automation of service discovery, different semantic languages have been created that allow describing the functionality ...
Asma Adala, Nabil Tabbane, Sami Tabbane
doaj   +1 more source

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