The term wifi is a contraction of wireless fidelity and commonly used to refer to wireless networking technology. Wireless technology refers to technology that allows us to communicate without using cables or wires. The best is yet to come 20 years since the first wifi standard, the technology is poised for a surge of innovation. The wifi technology wifi networks use radio technologies to transmit and receive data at high speed. In lifi the information is transferred through light signals instead of radio waves and mostly wifi plays an efficient role for wireless information coverage within the buildings whereas by using lifi we can provide the excel density data. The term was invented by the marketing departments of wi. Wifi was developed to be used for mobile computing devices, such as laptops, in. Wireless technology allows entrepreneurs to grow their businesses without any hassles. With wireless technologies, people and other entities can communicate over very long distances. Brady covering the topic of talking by wireless as you travel by train or motor, which noted it is now possible for a business man to talk with his of.
Thats the way most people relate to all of the technology that surrounds themyou shouldnt have to worry about the 802. In this paper, we show that wifi can also extend our senses, enabling us to see moving objects through walls and behind closed doors. Wifi operation in the 6 ghz frequency band will enable wifi to continue delivering positive experiences for the most bandwidthintensive applications. The network structure includes the wireless network interface adapters and base stations that send and receive the radio signals. Forrester research, a company that focuses on the business implications of technology change, has reported that in a few short years, up to 95% of devices used to access the internet will be nonpc devices that use an embedded system. We have seen wireless technology in cell phones and radios. Technology firms began building wireless networks and devices to take advantage of the newly available radio spectrum, but without a common. Aug 07, 2017 introduction wireless technology is an alternative to wired technology, which is commonly used, for connecting devices in wireless mode. It is widely used technology advancement in wireless communication for over decay now. Every wlan has an access point which is responsible for receiving and transmitting data from. Wifi is currently proving to be a reliable standalone network with multiple applications using radio frequency rf technology, wireless lan transmit and.
Wifi technology is a spectrum radio technology and ofdm radio technology therefore. Wifi technology has really made the life easy for people. It is best suited to lowbandwidth applications like transferring sound data with. The wifi alliance claims rights in its uses as a certification mark for equipment certified to 802. Content wireless communication standards computer networks reference model for a network architecture frequencies and regulations wireless communication technologies signals bandwidth limited signals signal modulation data transfer rate signal propagation most of the slides of this lecture come from prof.
How wifi works up to a point, its quite possible to treat your wireless network as a set of black boxes that you can turn on and use without knowing much about the way they work. Wifi is primarily a local area networking lan technology designed to provide inbuilding broadband coverage. Wifi is a generic term that refers to the ieee 802. Wifi technology, what is wifi technology, wireless fidelity. The future of wireless technology is bright due to it being very cost efficient and very easy to use and the best part about it is you dont have to worry about being tangled up in wires. Phil belanger, a founding member of the wifi alliance who presided over the selection of the name wifi, has stated that interbrand. Wifi technology, what is wifi technology, wireless. Wifi technology free download as powerpoint presentation. A free powerpoint ppt presentation displayed as a flash slide show on id. An introduction to wireless technology articles yawarra. Not requiring an explicit network of wires and permitting communication while on the move. Wifi network connect computers to each other, to the internet and to the wired network. The importance and uses of wifi technology science online.
Recent advances in networking technology have made it possible for devices to communicate using various light and wave emitting technologies. Wifi wireless fidelity is a generic term that refers to the ieee 802. Wifi was developed to be used for mobile computing devices, such as laptops, in lans. Federal communications commission that released the bands of the radio spectrum at 900 megahertz mhz, 2. The technology is very new and was proposed by the german physicist harald haas in 2011. As the innovative thinking of persons is increasing daybyday, new methods for wireless networking has been evolved of which our present topic wifi is the most accepted. Owing to the flexibility of the wireless network, users can be added easily. Wifi is primarily a local area networking lan technology designed to provide in building broadband coverage. Before you start proceeding with this tutorial, we are making an assumption that you are. Bluetooth vs wifi difference and comparison diffen. But this service was pretty expensive till 2002,however the new 802. Wifi wireless fidelity is a generic term that refers to ieee 802.
Introduction bluetooth wireless technology bwt was developed in 1994 at ericsson in sweden. Bluetooth and wifi are different standards for wireless communication. Wifi network connect computers to each other, to the internet and to the wired. Wifi, also, wifi, wifi or wifi, is a brand originally licensed by the wifi alliance to describe the underlying technology of wireless local area networks wlan based on the ieee 802. Sumit thakur ece seminars wifi technology seminar and ppt with pdf report.
Wireless fidelity popularly known as wifi, developed on ieee 802. The wireless network is operating three essential elements that are radio signals, antenna and router. Scribd is the worlds largest social reading and publishing site. Apbased topology infrastructure mode peertopeer topology adhoc mode.
Bluetooth wireless technology is an inexpensive, shortrange radio technology that eliminates the need for proprietary cabling between devices such as notebook pcs, handheld pcs, personal digital assistants pdas, cameras, and printers. Rf and ir stand for radio frequency and infrared respectively. Wifi is an alternative network to wired network which is commonly used for connecting devices in wireless mode. Wifi is a high speed internet connection and network connection without use of any cables or wires. As the name indicates, wifi provides wireless access to applications and data across using radio waves. Conclusion introduction wireless technology is an alternative to wired technology which is commonly used for connecting devices in wireless mode wifi wireless fidelity is a generic. In terms of the osi reference model, the radio signal operates at the physical layer, and the data format controls several of the higher layers. Requires support for wifi protected setup with its pushbutton or pinbased setup. Department of management information systems, college of information.
In lifi the information is transferred through light signals instead of radio waves and mostly wifi plays an efficient role for wireless information coverage within the buildings whereas by using lifi we can provide the excel. Introduction wifi technology wifi network elements wifi network topologies hotspots how a wifi network works advantages limitations conclusion. Compatible devices can network through a wireless access point to each other as well as to wired devices and the internet. It has many advantages such as flexible, responsive, customized, fast, costeffective, secure. Wifi technology article about wifi technology by the. Developed by mit researchers, it uses wifi signals to see through the walls.
Technology is making rapid progress and is making many things easier. Wifi is used for different purposes such as data transmission and wireless communication, with using a wifi connection whenever possible will most often result in faster, more reliable internet access, and it is cheap. Lifi is the abbreviation of light fidelity and was expressed by harald hass who was a german physicist. Wifi compatible devices can connect to the internet via wlan network and a wireless access point abbreviated as ap.
Introduction to wireless networks when you invent a new network. Wireless and mobile technologies have changed our lives in ways we are only beginning to understand. Wifi allows highspeed internet connections without the use of cables. Wifi calling only to fill gaps opportunistically, and especially to address the challenge of good inbuilding penetration.
Wifi is a technology that uses radio waves to provide network connectivity. See below for a comparison of the common wireless standards. With a workplace equipped with wireless lan connectivity, employees can move around the office space without any restrictions arising from cables. Wifi computing a system of accessing the internet from remote machines such as laptop computers that have wireless connections wifi networking either of two different incompatible radiobased lan protocols, namely 802.
Wifi uses multiple parts of the ieee 802 protocol family and is designed to seamlessly interwork with its wired sibling ethernet. In a survey of mobile and fixedline operators conducted in summer 2015, rethink technology research found that almost 90% of mnos, and over 70% of msos, planned to deploy wifi calling between 2015 and 2020. Wireless technology is an alternative to wired technology, which is commonly. Wifi, networking technology that uses radio waves to allow highspeed data transfer over short distances. Introduction to wireless technology the term wireless communication refers to the transfer of information using electromagnetic em or acoustic waves over the atmosphere rather than using any propagation medium that employs wires.
Wifi is a family of wireless networking technologies, based on the ieee 802. Wifi wireless technology working principles, types and. Bluetooth technology is useful when transferring information between two or more devices that are near each other when speed is not an issue, such as telephones, printers, modems and headsets. One of the biggest advantages of wireless networks is its ability to fuel increased mobility in businesses. Wifi technology wifi is an alternative network to wired network which is commonly used for connecting devices in wireless mode. Introduction wireless technology is an alternative to wired technology, which is commonly used, for connecting devices in wireless mode. Wifi 6e brings a common industry name to identify devices that will offer the features and capabilities of wifi 6, extended to the.
Wireless technology in the workplace powers the concept of a mobile workforce. The wifi alliance had hired interbrand to create a name that was a little catchier than ieee 802. Impact of wireless technology in the workplace small. Pdf wireless fidelity wifi broadband network technology has made tremendous impact in the growth of broadband wireless networks. The deve lopment of this technology began in 1997, when the institute of electrical and electronic engineers ieee introduced the standard 802. Technologies that started from humble origins, such as ofdm used in the 1980s for digital broadcasting, have been stretched to new limits and combined with other concepts, so that ultra wideband uwb. Ppt wifi technology powerpoint presentation free to. Therefore, office restructuring, shifts or expansion can be managed easily. Digital radio co m m unications for research and training in. This tutorial gives you a basic understanding on wifi. Wifi technology is a spectrum radio technology and ofdm radio technology therefore it is an alternate of wireless lan.
Download the pdf and ppt reports to learn various applications, challenges, and solutions, recent advances in mimo communications. The different versions of wifi are specified by various ieee 802. Wifi direct allows wifi devices to talk to each other without the need for wireless access points wifi direct essentially embeds a software access point, or soft ap, into any device that wishes to support direct. A connection is established using a wireless adapter to create hotspots areas in the vicinity of a wireless router that are connected to the network and allow users to access internet services. It is a technology for wireless local area networking with devices based on ieee 802. The best thing in wifi technology is that it provides multiuser environment for us, unlike a dedicated connection where only one person can make use of the network at a time. Get the latest ieee documentation for seminar report on wivi technology. A hotspot is any location where wifi network access is made publicly available. There are two main advantages of using wireless technology for computer networks. Wifi is used for different purposes such as data transmission and wireless communication, with using a wifi connection whenever possible will most often result in faster, more reliable internet access, and it is cheap wifi allows wireless connection for up to 20 meters, it is also known as internet routers, you no longer need cords or internet. Internet and voip phone access, gaming, and basic connectivity of consumer electronics such as televisions and dvd players, or digital cameras. Current wifi systems support a peak physicallayer data rate of 54 mbps and typically provide indoor coverage over a distance of 100 feet. Wifi technology has its origins in a 1985 ruling by the u. Wifi technology wifi is stand for wireless fidelity is generic term that refers to ieee802.
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