Wireless Personal and Local Area Networks

2011 ◽  
pp. 86-98
Author(s):  
Thomas G. Zimmerman
Keyword(s):  
Wireless Communication ◽  
Mobile Computing ◽  
Mobile Phones ◽  
Local Area Networks ◽  
Local Area ◽  
Personal Digital Assistants ◽  
Wireless Technology ◽  
Common Site ◽  
The World

Wireless communication is a technical and business revolution. Mobile phones are a common site in most cities around the world. Wireless personal and local area networks provide digital connectivity among mobile computing devices, including desktop, laptops and personal digital assistants (PDA). This chapter focuses on the competing standards that are vying for dominance in the booming wireless market. To prepare the reader, a broad review of wireless technology is provided. The various organizations that support the competition standards are outlined. The chapter concludes with some predictions, anticipating the outcomes of a very volatile marketplace.

Wireless

2011 ◽  
pp. 979-982
Author(s):  
Jon Beedle
Keyword(s):  
Higher Education ◽  
Wireless Communication ◽  
Mobile Phones ◽  
Electronic Materials ◽  
Personal Digital Assistants ◽  
Radio Waves ◽  
Wireless Technology ◽  
E Mail

Many people in higher education have been computing for years, including faculty, staff, and students. Everyone has expectations of what they want and need on campus and that includes access anywhere and anytime to e-mail, data, and other electronic materials and documents accessible by computer only. As Cossey (2005) writes, “wireless technology has the potential to be a valuable enabler.” Wireless technology allows users to go mobile or without wires and to communicate with others and send data using mobile phones, personal digital assistants (PDAs), laptops, or handheld games. Typically, this wireless communication involves using radio waves or infrared waves to transport signals instead of cables.

scholarly journals A study on the effect of prolonged mobile phone usage on hearing among students

2020 ◽  
Vol 6 (3) ◽  
pp. 493
Author(s):  
V. Srinivasa ◽  
Jayendiran Subramaniam ◽  
I. Chakkravathy ◽  
Harish Vel ◽  
Sathish Kirushnan
Keyword(s):  
Hearing Loss ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Otoacoustic Emissions ◽  
Local Area Networks ◽  
Pure Tone Audiometry ◽  
Local Area ◽  
Base Stations ◽  
Study Population ◽  
Mobile Phone Usage

<p class="abstract"><strong>Background:</strong> Mobile phones have become integral part of our daily life. Since the number of base stations and wireless local area networks increases simultaneously the concern about possible health hazards from exposure to the radiofrequency fields by these wireless technologies also raises. The main aim of our study was to study the effect of prolonged mobile phone usage on hearing among students and to assess the percentage of sensorineural hearing loss among them.</p><p class="abstract"><strong>Methods:</strong> Hundred medical students were enrolled in our study. Basic information was collected from each student using a preliminary questionnaire. All the chronic mobile users who use right ear as the dominant ear were subjected to otoacoustic emissions (OAE) and pure tone audiometry.  </p><p class="abstract"><strong>Results:</strong> The OAE results were normal in all the students. We also observed that none of the individuals in our study affected from significant hearing loss (more than 25 dB). But we found a minimal hearing loss in those using mobile phones for more than two hours per day.</p><p class="abstract"><strong>Conclusions:</strong> We concluded that chronic mobile phone usage did not show any significant hearing loss in the study population.</p>

Mobile Location Based Services

2011 ◽  
pp. 629-637
Author(s):  
Bardo Fraunholz ◽  
Jürgen Jung ◽  
Chandana Unnithan
Keyword(s):  
Mobile Phones ◽  
Mobile Communications ◽  
Location Based Services ◽  
Personal Digital Assistants ◽  
Computing Power ◽  
Mobile Location ◽  
Business Applications ◽  
The World ◽  
New Business ◽  
Key Factor

Mobility has become a key factor around the world, as the use of ubiquitous devices, including laptops, personal digital assistants (PDAs), and mobile phones, are increasingly becoming part of daily life (Steinfield, 2004). Adding mobility to computing power, and with advanced personalization of technologies, new business applications are emerging in the area of mobile communications (Jagoe, 2003). The fastest growing segment among these applications is location-based services. This article offers a brief overview of services and their supporting technologies, and provides an outlook for their future.

Mobile E-Commerce on Mobile Phones

2003 ◽  
pp. 19-43 ◽  
Author(s):  
Do van Thanh
Keyword(s):  
World Wide Web ◽  
Wireless Communication ◽  
Mobile Phones ◽  
Communication Systems ◽  
World Wide ◽  
Wireless Communication Systems ◽  
Wireless Application Protocol ◽  
The World ◽  
Business To Consumer ◽  
Wireless Application

This chapter considers mobile e-commerce on mobile phones and in particular GSM mobile phones. It is aiming at clarifying the differences between e-commerce and mobile e-commerce. The powerful aspects of this new e-commerce form born with mobility are explained carefully. The chapter starts with a presentation of the generic business-to-consumer e-commerce followed by two typical examples of e-commerce on the World Wide Web. The mobile e-commerce is then described thoroughly. The fundamental differences with e-commerce are explained, and an ideal mobile commerce system is presented. The limitations in current wireless communication systems are clarified. The Wireless Application Protocol together with its impacts and limitations for mobile e-commerce are also considered. Different types of mobile phones will then be studied, and their limitations regarding security are shown. A solution providing adequate authentication and micro-payment, called Mobile ePay, is then presented with examples of operation. A mobile e-commerce receipt system enabling instantaneous delivery is described thoroughly. The chapter concludes with suggestions for future works.

Design of a Fixed-Frequency Beam-Scanning Antenna Controlled by Voltage

2014 ◽  
Vol 986-987 ◽  
pp. 1785-1789
Author(s):  
Rui Kun Wu ◽  
Guo Tai Chen
Keyword(s):  
Local Area Networks ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Wireless Technology ◽  
Fixed Frequency ◽  
Leaky Wave ◽  
Horizontal Polarization ◽  
Beam Scanning ◽  
Left Handed ◽  
Wave Antenna

A microstrip leaky wave antenna with operating frequency 2.5GHz is designed based on composite right/left handed transmission line. The beam scanning of the antenna can be controlled by changing the bias voltage of varactor in the antenna. And the performance, S-parameters and horizontal polarization pattern, of the antenna are investigated by simulation and experimental measurement, respectively. The results show that the designed antenna has better beam scanning, which is proper to be used in wireless local area networks and short-range wireless technology.

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

Módulo de Capacitación Básica en Redes LAN para la Fundación Universidad Autónoma de Colombia

2013 ◽  
Vol 9 (16) ◽  
pp. 33-43
Author(s):  
Álvaro Javier Carrillo Hernández ◽  
Joan Katherine Zorovich Gutiérrez ◽  
Javier Enrique Arévalo Peña
Keyword(s):  
Local Area Networks ◽  
Local Area

Este articulo presenta el proceso de desarrollo de un módulo de capacitación en redes de área local (LAN: Local Area Networks), cuyos contenidos son de fácil entendimiento, que es posible tomarlo en un periodo muy corto de tiempo, que no depende directamente de un tutor para poderse realizar y que además tiene incluido un desarrollo práctico para la utilización del Laboratorio de Telemática de Fundación Universidad Autónoma de Colombia. Para poderlo realizar fue necesaria una indagación previa acerca del aprendizaje, la selección un plan temático, realizar la correspondiente recopilación bibliográfica para la creación de un marco teórico que fuese acorde con la teoría del aprendizaje y crear unas prácticas de laboratorio adecuadas que reforzaran el conocimiento adquirido. Como resultado se obtuvo un software didáctico que contiene todo el marco teórico distribuido en temáticas y prácticas de laboratorio que conjugan la parte teórica con la parte práctica.

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