scholarly journals Effects of emission from different UWB short-range communication devices

2011 ◽  
Author(s):  
F. Arvin ◽  
H. A. Majid ◽  
S. J. Hashim ◽  
R. S. A. R. Abdullah ◽  
A. M. Ali ◽  
...  
Keyword(s):  
Short Range ◽  
Communication Devices

scholarly journals Utilizing Context in Location-Aware Short-Range Wireless Communication

2010 ◽  
Vol 2010 ◽  
pp. 1-12 ◽  
Author(s):  
Vesa A. Korhonen ◽  
Ritva Pyykkönen
Keyword(s):  
Wireless Communication ◽  
Information Search ◽  
Short Range ◽  
Human Interaction ◽  
Preliminary Design ◽  
Data Filtering ◽  
Web Based ◽  
Communication Devices ◽  
Search Tool ◽  
Additional Value

We discuss how a short-range wireless communication service implemented for modern mobile communication devices can provide additional value for both the consumer and the service/product provider. When used as an information search tool, such systems allow services and products being promoted at the location they are available. For the customer, it may provide a “digitally augmented vision”, an enhanced view to the current environment. With data filtering and search rules, this may provide a self-manageable context, where the user's own personal environment and preferences to the features available in the current surroundings cooperate with a direct connection to the web-based social media. A preliminary design for such service is provided. The conclusion is that the method can generate additional revenue to the company and please the customers' buying process. In addition to the marketing, the principles described here are also applicable to other forms of human interaction.

scholarly journals RETRACTED: A Semi-Hexagonal Array (1×2) Antenna Using Half Mode Substrate Integrated Waveguide for Short Range Communication Devices

2018 ◽  
Vol 8 (3) ◽  
pp. 3004-3008
Author(s):  
M. E. Munir ◽  
S. S. Qurashie
Keyword(s):  
Short Range ◽  
Review Process ◽  
Substrate Integrated Waveguide ◽  
Hexagonal Array ◽  
Unpublished Paper ◽  
Communication Devices

This article has been retracted at the request of the Editor-in-Chief due to extended similarites with an unpublished paper, written by other authors, that was submitted (but not yet published) to several other journals and was probably leaked during the review process.  The authors of the unpublished paper contacted the Editor-In-Chief with the above claim after the publication of this issue and ETASR has contacted several of the journals mentioned and the investigation resulted in the confirmation of the report. The authors of this paper failed to provide any reasoning regarding the case.

scholarly journals Bluehoc-based simulation study of user data throughput in Bluetooth-enabled devices

2021 ◽  
Author(s):  
Syed Rahat
Keyword(s):  
Simulation Study ◽  
Short Range ◽  
Data Transfer ◽  
Low Cost ◽  
Maximum Throughput ◽  
Start Time ◽  
Communication Devices ◽  
User Data ◽  
Key Aspects ◽  
Infrared Data

Bluetooth technology aims at allowing short-range communication between portable and/or fixed devices. It uses short-range radio links to replace cables between Bluetooth-enabled devices. In this way, it is similar in purpose to the Infrared Data Association (IrDA), however, Bluetooth is a radio frequency (RF) technology utilizing the unlicensed 2.5 GHz industrial, scientific, and medical (ISM) band. The key features of Bluetooth technology are robustness, low power and low cost with its primary market for data and voice transfer between communication devices and PCs. In this project, a simulation study is done with three major goals in mind: (i) to gather expertise on and evaluate a Bluetooth simulation tool called Bluehoc for further use, (ii) to gather measurements of some Bluetooth characteristics such as throughput in post connection state and (ii) to describe a model that can be used to get maximum throughput for voice and data applications. We also review some of the key aspects in Bluetooth simulation and present models of the Bluetooth devices to get maximum throughput. We show that user data transfer rate (throughput) between Bluetooth master and slaves is effected by distance, number of slaves and slave's start time.

scholarly journals FPGA Based Accident Detection and Monitoring System for Safety Traffic

2020 ◽  
Vol 8 (5) ◽  
pp. 2838-2841
Keyword(s):  
Monitoring System ◽  
Threshold Voltage ◽  
Short Range ◽  
Major Part ◽  
The Other ◽  
V2v Communication ◽  
Communication Devices ◽  
Accident Detection ◽  
Day By Day

In extremely inhabited countries like India, the population increases day by day because of this problem so many new types of the innovations are developed but in this project mainly focus on the automobiles. For industry reputation purpose car are made with high boost engines which is nearly speed equal to the trains. Due to this over speed so many accident will happen so many lives will lose. Even when the vehicle is travel in unpopular area if there is any accident happen it intimate to the relatives, hospitals and as well as the polis near by the location. In this project first it detects the output from the sensor and that sensor gives the disturbances happen in the directions of the vehicle. And this sensor make to communicate with the other people by using cross communication devices it particularly dedicated for the short range communication. Presently this technology is used in V2V communication .But in this project we mainly focus on the getting the location from the user devices to any other mobile number which are registered before. Major part of the paper we designed in the Verilog implementation whenever the input crosses the threshold voltage it automatically send the information to the user

scholarly journals Bluehoc-based simulation study of user data throughput in Bluetooth-enabled devices

2021 ◽  
Author(s):  
Syed Rahat
Keyword(s):  
Simulation Study ◽  
Short Range ◽  
Data Transfer ◽  
Low Cost ◽  
Maximum Throughput ◽  
Start Time ◽  
Communication Devices ◽  
User Data ◽  
Key Aspects ◽  
Infrared Data

Bluetooth technology aims at allowing short-range communication between portable and/or fixed devices. It uses short-range radio links to replace cables between Bluetooth-enabled devices. In this way, it is similar in purpose to the Infrared Data Association (IrDA), however, Bluetooth is a radio frequency (RF) technology utilizing the unlicensed 2.5 GHz industrial, scientific, and medical (ISM) band. The key features of Bluetooth technology are robustness, low power and low cost with its primary market for data and voice transfer between communication devices and PCs. In this project, a simulation study is done with three major goals in mind: (i) to gather expertise on and evaluate a Bluetooth simulation tool called Bluehoc for further use, (ii) to gather measurements of some Bluetooth characteristics such as throughput in post connection state and (ii) to describe a model that can be used to get maximum throughput for voice and data applications. We also review some of the key aspects in Bluetooth simulation and present models of the Bluetooth devices to get maximum throughput. We show that user data transfer rate (throughput) between Bluetooth master and slaves is effected by distance, number of slaves and slave's start time.

scholarly journals LTE FDD AND SRD EQUIPMENT COMPATIBILITY IN 2500 MHZ BAND / LTE FDD IR SRD ĮRENGINIŲ SUDERINAMUMAS 2500 MHZ RUOŽE

2014 ◽  
Vol 6 (2) ◽  
pp. 206-210
Author(s):  
Evaldas Stankevičius
Keyword(s):  
Frequency Band ◽  
Short Range ◽  
Electromagnetic Compatibility ◽  
Base Stations ◽  
Software Systems ◽  
Frequency Channel ◽  
Channel Distribution ◽  
Mobile Stations ◽  
Communication Devices ◽  
Downlink Channels

This paper examines the LTE mobile communication base stations possible interfering effects on short range communication devices operating in ISM frequency band. LTE network is running in 2500–2690 MHz frequency band, where frequency channel distribution is used. Downlink channels are assigned to base stations and formed in 2620–2680 MHz band, uplink channels are assigned to mobile stations and formed in 2500–2560 MHz band. Short range communication devices operate in 2400–2483.5 MHz frequency range. The main problem of this study – the interference probability and magnitude. Real equipment was simulated using two different modelling software systems for investigation of electromagnetic compatibility: ICS Telecom and Seamcat. The modelling results show that LTE BS have minimum or no impact on operation of short range communication devices in ISM frequency band. Nagrinėjamas LTE mobiliojo ryšio bazinių stočių galimas interferencinis poveikis nedidelio veikimo nuotolio įrenginiams. LTE tinklas veikia 2500–2690 MHz dažnių ruože, naudojamas dažninis kanalų dalijimas. Žemynkrypčiai kanalai, priskiriami bazinėms stotims, formuojami 2620–2680 MHz ruože, aukštynkrypčiai kanalai, priskiriami mobiliosioms stotims, formuojami 2500–2560 MHz ruože. Trumpojo veikimo nuotolio įrenginiai veikia 2400–2483,5 MHz dažnių ruože. Pagrindinė šio tyrimo problema – galima interferencija ir jos mastas. Realus įrenginių veikimas modeliuojamas dviejomis skirtingomis programomis, kurios skirtos elektromagnetiniam suderinamumui tirti: ICS Telecom ir Seamcat.

scholarly journals Trajectories and Resource Management of Flying Base Stations for C-V2X

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 811 ◽  
Author(s):  
Silvia Mignardi ◽  
Chiara Buratti ◽  
Alessandro Bazzi ◽  
Roberto Verdone
Keyword(s):  
Cellular Network ◽  
Short Range ◽  
Base Stations ◽  
Trajectory Design ◽  
Radio Resource ◽  
Traffic Distribution ◽  
Communication Devices ◽  
Sensing Application ◽  
Application Requirements ◽  
Mobile Base

In a vehicular scenario where the penetration of cars equipped with wireless communication devices is far from 100% and application requirements tend to be challenging for a cellular network not specifically planned for it, the use of unmanned aerial vehicles (UAVs), carrying mobile base stations, becomes an interesting option. In this article, we consider a cellular-vehicle-to-anything (C-V2X) application and we propose the integration of an aerial and a terrestrial component of the network, to fill the potential unavailability of short-range connections among vehicles and address unpredictable traffic distribution in space and time. In particular, we envision a UAV with C-V2X equipment providing service for the extended sensing application, and we propose a UAV trajectory design accounting for the radio resource (RR) assignment. The system is tested considering a realistic scenario by varying the RRs availability and the number of active vehicles. Simulations show the results in terms of gain in throughput and percentage of served users, with respect to the case in which the UAV is not present.

Domain coarsening by grain boundary migration in ordered Ni4Mo

1986 ◽  
Vol 44 ◽  
pp. 560-561
Author(s):  
K. Vasudevan ◽  
H. P. Kao ◽  
C. R. Brooks ◽  
E. E. Stansbury
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Short Range ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
Rapid Cooling ◽  
Temperature Range ◽  
Fee Structure ◽  
Domain Coarsening ◽  
Boundary Reaction

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.

Ordering in Ni4Mo by TEM and APFIM

1987 ◽  
Vol 45 ◽  
pp. 214-215
Author(s):  
E.A. Kenik ◽  
T.A. Zagula ◽  
M.K. Miller ◽  
J. Bentley
Keyword(s):  
Electron Irradiation ◽  
Low Temperatures ◽  
Short Range ◽  
Atom Probe ◽  
Range Order ◽  
Considerable Time ◽  
Probe Field ◽  
Disordered Phase ◽  
Transmission Electron ◽  
Diffraction Patterns

The state of long-range order (LRO) and short-range order (SRO) in Ni4Mo has been a topic of interest for a considerable time (see Brooks et al.). The SRO is often referred to as 1½0 order from the apparent position of the diffuse maxima in diffraction patterns, which differs from the positions of the LRO (D1a) structure. Various studies have shown that a fully disordered state cannot be retained by quenching, as the atomic arrangements responsible for the 1½0 maxima are present at temperatures above the critical ordering temperature for LRO. Over 20 studies have attempted to identify the atomic arrangements associated with this state of order. A variety of models have been proposed, but no consensus has been reached. It has also been shown that 1 MeV electron irradiation at low temperatures (∼100 K) can produce the disordered phase in Ni4Mo. Transmission electron microscopy (TEM), atom probe field ion microscopy (APFIM), and electron irradiation disordering have been applied in the current study to further the understanding of the ordering processes in Ni4Mo.

Clinical Impressions of How Young Children Use AAC at Home and in Child Care Settings: A Canadian Perspective

2010 ◽  
Vol 19 (1) ◽  
pp. 21-28
Author(s):  
Kathryn Wishart
Keyword(s):  
Child Care ◽  
Young Children ◽  
High Tech ◽  
Speech Language Pathologists ◽  
Cultural Backgrounds ◽  
Community Based ◽  
Multicultural Community ◽  
Canadian Perspective ◽  
Communication Devices ◽  
Stakeholder Input

Abstract Speech-language pathologists, working in a multicultural, community-based environment for young children with special needs in Vancouver, Canada, collected information on 84 clients using AAC from a chart review. The speech-language pathologists collected additional usage information and attended a group interview to discuss barriers and facilitators of AAC. Thirty-one percent of the children were using AAC. Children aged between 16 and 72 months typically relied on multiple modes of communication, including sign, communication boards and binders, and low- and high-tech communication devices. All of the children used at least one type of unaided mode. Fifty-five percent used pictures or communication boards/displays, and 29% used technology with speech output. Similarities in usage of AAC were noted in home and child-care settings with increased use of unaided in homes and a slightly increased use of aided communication in child care settings. Speech-language pathologists reported that the time needed for AAC intervention as well as limited funding for high-tech devices continue to be major barriers. Additional research is needed to describe current AAC practices with young children particularly from minority linguistic and cultural backgrounds. Stakeholder input is needed to explore perceptions of children's usage of AAC in daily life with familiar and unfamiliar communication partners.

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