Wireless world
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This document discusses wireless technology and wireless communications. It describes how wireless communications can transfer information over short or long distances using electromagnetic waves or radio frequency instead of wires. It provides examples of different types of wireless technologies like Wi-Fi, cellular networks, Bluetooth, and discusses how wireless networks can be used without wires to connect devices over distances or in situations where cabling is not practical. The document also briefly introduces wireless energy transfer as a way to charge devices without wired chargers.
Wireless world
- 1. WWW: World Without Wires Manasvee Saraf SakshiShetty ShreyaPatrawala SnehaShastri
- 2. Wireless World! The term "wireless" has become a generic and all encompassing word used to describe communications in which ectromagneticwaves or Radio Frequency (rather than some form of wire) carries a signal over part or the entire communication path.
- 3. Wireless Communications o Wireless communication may be used to transfer information over: • short distances (a few meters as in television remote control) • or long distances (thousands or millions of kilometers for radio communications). o It includes various types of • fixed, • mobile, • and portable two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking.
- 4. Wireless Technology o Other examples of wireless technologyinclude • GPS units, • garage door openers, • wireless computer mice, keyboards and headsets, • satellite television and • cordless telephones.
- 5. How is the information transferred? Wireless operations permits services, such as long range communications, that are impossible or impractical to implement with the use of wires. Telecommunications systems: • radio transmitters and receivers, • remote controls, • computer networks, • network terminals, etc. They use some form of energy • Radio frequency (RF), • Infrared light, • Microwave communication, • Laser light, • Visible light, • Acoustic energy, etc. to transfer information without the use of wires.
- 6. Microwave communication => Infrared communication =>Radio Frequency communication =>
- 7. Types of Wireless Communications: • point-to-point communication: from one location to the other • point-to-multipoint communication: from a single location to multiple locations • Broadcasting: from one location to all locations simultaneously • cellular networks: this networks allows the user to wander about any where in the country and stay connected • other wireless networks. Broadcasting Antenna
- 8. The use of a wireless network: • To span a distance beyond the capabilities of typical cabling, • To provide a backup communications link in case of normal network failure, • To link portable or temporary workstations, • To overcome situations where normal cabling is difficult or financially impractical, • to remotely connect mobile users or networks. • to connect laptop users who travel from location to location. • for mobile networks that connect via satellite. • to network a LAN segment that must frequently change locations • Wireless technology may supplement or replace hard wired implementations in security systems for homes or office buildings.
- 9. • Wi-Fi is a wireless local area network that enables portable computing devices to connect easily to the Internet. • Cell phones use radio waves to enable the operator to make phone calls from many locations worldwide
- 10. Wireless Local Area Network Wireless LAN A wireless local area network (WLAN) links two or more devices using some wireless distribution method, and usually providing a connection through an access point to the wider internet. This gives users the mobility to move around within a local coverage area and still be connected to the network.
- 11. Bluetooth Bluetoothis a proprietary open wireless technology standard for exchanging data over short distances (using short wavelength radio transmissions) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security.
- 12. What can we use instead of our device chargers? Wireless energy transfer Wireless energy transfer is a process whereby electrical energy is transmitted from a power source to an electrical load that does not have a built-in power source, without the use of interconnecting wires.