This website uses cookies to ensure you have the best experience. Learn more

An Introduction To Wireless Networks Essay

1917 words - 8 pages

An Introduction to Wireless NetworksIntroductionDemand for wireless networks has grown with the development of Mobile hardware, such as mobile phones, laptops and PDA's. With this demand has come industry standards and affordable, lightweight wireless networking hardware. This website will introduce you to the media of in wireless networking, give you an in depth look at Wireless Local area networks (LAN), familiarise you with the Industry standards and Issues.Wireless MediaWireless connections all use some form of Radio Frequency (RF) technology, using air as the transmission medium instead of a wire to transmit and receive data.There are 5 categories generally used for networks.Radio - ...view middle of the document...

Microwave- (2- 40 GHz) has minimal effects on humans and can transmit through thin walls. Its bandwidth can be split into a number of sub-channels for speed. Used for telecommunications, television transmission, and also for short point to point links between buildings. The microwave is difficult to deploy and requires a licence.Spread spectrum radio - this uses wireless networking communications technology first developed by the military for secure and noise-immune communications. Only recently become viable for commercial use, with smaller, faster and cheaper products. Spread spectrum is easy to implement and does not require a license. It operates at a lower bandwidth than microwave, and as distance from the initial signal increases, a lower bandwidth can be used. Data is sent in small pieces over a number of frequencies available for use at any time in the specified range.This can be done in 1 of 2 ways:Frequency-hopping spread spectrum (FHSS) - sends a short burst of data, changes frequencies and then sends another short burst to increase the probability of successful data transmission. A number of independent FHSS networks can exist in the same physical area without interfering with each other because the FHSS devices agree on which frequencies to hop to, and use each frequency for less than 400 milliseconds before hopping. FHSS only uses 1 MHz or less of the available bandwidth. This is the method that has been adopted by Shared Wireless Access Protocol (SWAP) networks.Direct-sequence spread spectrum (DSSS)- communicate by each byte of data is split into several parts and sent simultaneously on different frequencies to ensure the document is received. This uses a lot of the available bandwidth, about 22 MHz. DSSS products capable of data rates of 6 Mbps, (4-6 times faster than currently available FHSS products), and approaching that of 10 Base-T wired hubs. FHSS devices are less prone to interference than DSSS devices because they use any given frequency for such a short time. But DSSS is capable of much greater speed than FHSS since these devices can send a lot more data at the same time. Currently, FHSS-based devices are easier and cheaper to produce.What is Wireless LANA wireless LAN (WLAN) is a network without wires. WLAN's use radio frequencies as their transmission media, sending network traffic sailing over the air. It is a flexible data network system applied as an extension to, or as an alternative for a wired LAN. The WLAN market is a high-growth area with businesses eagerly wanting all the benefits that wireless can offer.'The term wireless networking refers to technology that enables two or more computers to communicate using standard network protocols, but without network cabling. The current buzzword however generally refers to wireless LANs.' VicomsoftTopologyOptions for wireless network topologies:Ad-hoc (peer-to-peer) - This is a basic system where the WLAN has a number of computers each with a wireless networking...

Other Essays On An Introduction To Wireless Networks

Wireless Internet At McDonalds - Pricing, Promotion And Publicity

2319 words - 10 pages IntroductionServices, such as wireless Internet service, present a unique marketing challenge for organizations. Any service has four main characteristics that companies must address in their promotion and pricing plans: intangibility, inseparability, variability, and perishability. This plan uses a pricing and promotion strategy that adjusts the controllable factors of the wireless service to cope with, and even exploit, an uncontrollable

Ethernet : Advantages and Disadvantages - engineering - Assignment

1958 words - 8 pages Ethernet Contents Introduction 1 Ethernet DTE and DCE 1 The Fundamentals of an Ethernet LAN, Explained 1 What You Need in an Ethernet LAN 2 How Ethernet Works 2 Types of Ethernet Cables 3 Advantages and Disadvantages of Ethernet Cables 5 Alternatives to Ethernet Cables for Computer Networking 6 References: 6 Introduction Ethernet is a family of computer networking technologies commonly used in local area networks (LAN), metropolitan area

Broadcasting

567 words - 3 pages Over the past decades, the importance of on-air networks has changed immensely. Their roles have changed because of the many different stages it went through.In the 1950's, cable only carried about 5 or 6 channels, which were all local stations. With the use of the community antenna television (CATV), signals could be transmitted by wire to local subscribers. CATV operators soon after they found ways to augment their services by using microwave

Radio Frequency

5012 words - 21 pages networks, with the help of my mentor, Oscar Holzmeister.SearchingWhen I was first introduced to telecommunications, I didn't have a clue of what to expect. On the first day of my mentorship, my mentor introduced me into Radio Frequency as a Field Engineer and I was taught how an RF Field Engineer operates in this particular field and how they assist others beneficially. He told me that his job was to maintain and operate Radio Base Stations. According

Telecom Sector Analysis India-Company Analysis Bharti Analysis

2019 words - 9 pages , thus increasing the net profit margin to 23.7%.Bharti Airtel has had an overall robust performance in all the segments it operates. In all, company added 24, 843,511 mobile customers in last one year.Segment wise performanceMobile ServicesThe company offers mobile and fixed wireless services using GSM technology in 900 MHz and 1800 MHz bands and is the largest wireless service provider in the country in terms of number of customers. During the

Parker Earth Moving Company Consulting: Session 4

949 words - 4 pages as they move throughout the different facilities. With the application of RFID technologies, Mobile Scanner applications can be integrated to support PDA and bar code scanner devices and wireless receivers can be integrated as part of the solution.These software and hardware technologies operate over wireless networks. In order to integrate these new technologies new computer networks and telecommunications solution should be introduced to support

Organizing

1264 words - 6 pages morale and provide a positive working environment for all the employees.Organizing relates to the KnowledgeMy company is an authorize dealer of the wireless service's providers, such as Cingular Wireless; Verizon Wireless; T-Mobile Wireless, etc... In my department, there is only one goal, it is had as much as customers we can. How can we have customers? In order for us to bring up our sale's value, we have to provide the best wireless' service

Nokia

1943 words - 8 pages mobile phones to be tailored to anything from their functional requirements of the phone to whether or not it matches the handbag (purse) for Friday night's big party; thus Nokia has/is meeting these wants/needs (by now and for some certain functions are needs) in an ever increasing wireless world.Nokia realigned its operations into mobile phones, multimedia, networks and enterprise. It reflects the two dynamics Nokia has to improve, namely

Untitled

608 words - 3 pages his associate Thomas Watson with the aid of his new invention, the telephone Heinrich Hertz experiments with radio waves that become known as Hertzian waves and leads to the development of radio broadcasting Guglielmo Marconi used Morse, Bell, and Hertz ideas to transmit waves without the aid of wires In 1912David Sarnoff relayed news from Nantucket Island that he received distress calls from the Titanic on his Marconi wireless device Federal

Business opportunities within information management - University of Johannessburg - Assignment

2576 words - 11 pages facilitation 10 12. Informed buying 10 13. Making technology work 10 14. Security 11 15. ROI 11 16. Conclusion 12 17. Bibliography 13 1. Introduction The internet Economy has grown more rapidly than anyone could have envisioned even five years ago, opening up new vistas of communication, collaboration and coordination between consumers, businesses and trading partners worldwide (Turban, 2004). What started out as an alternative marketing channel has

Information management business opportunities - Univeersity - Assignment

2576 words - 11 pages facilitation 10 12. Informed buying 10 13. Making technology work 10 14. Security 11 15. ROI 11 16. Conclusion 12 17. Bibliography 13 1. Introduction The internet Economy has grown more rapidly than anyone could have envisioned even five years ago, opening up new vistas of communication, collaboration and coordination between consumers, businesses and trading partners worldwide (Turban, 2004). What started out as an alternative marketing channel has

Similar Papers

An Introduction To Barcoding Essay

4782 words - 20 pages characters. EAN (European Article Numbering) and JAN (Japanese Article Numbering) are variations of the basic UPC design.Interleaved 2 of 5 (I 2 of 5) Interleaved 2 of 5 (I 2 of 5) code is an industrial barcode used to encode numeric data only. It is a continuous code comprised of wide bars and spaces. Continuous code means that both the bars and spaces are coded. Each digit is made up of two wide elements and three narrow elements. The odd digits are

Documentary Film: "Paris Is Burning" An Analysis Trent University Introduction To Film Movements: Ii Essay

1308 words - 6 pages Documentary Film "Paris is Burning" Ryan Brown – 0587428 Introduction to Film Movements: II Josh Synenko April 10, 2018 Paris is Burning is a film that displays intricately organized ball rivalries in which challengers, sticking to specific class or theme, must "walk" in a design runway. Consequently, these participants are judged on criteria, including the "realness" of their drag, the perfection of their adornments together with their

Ap World History An Introduction To Japan Yeet Yeet

2869 words - 12 pages had to conquer other lands or trade to acquire these natural resources. Questions: 1- Why is Japan an archipelago? ___________________________________________________________________________________________ 2- List the four main islands of Japan. ________________________________________________________ 3- What are two geographic effects of the Japanese islands on the people of Japan

Sdadsada Essay

3969 words - 16 pages not address those issues related to the interoperability between wired and wireless networks. Nowadays, wireless mobile devices have a large demand of multiple services from the Internet, thus resulting in a need to extend some of the readily available services to wireless network while providing the same level of performance and reliability. This work presents an approach to integrate a wireless ad hoc network with a wired network, while