Commercial wireless technologies and examples……..
Here is a list of commercial wireless technologies availabletoday.
Amplitude modulated radio used for long range audiobroadcasting. For example, Akashavani.
Frequency modulated radio, provides better quality of sound forshort range broadcasting. For example, Radio City.
Short wave radio
Used for communications, handheld radios and walkie talkies.For example, radio handsets used by law enforcement agencies.
Digitally modulated signals carrying live audio and video fortelevision audience. For example, Tata Sky.
Satellites in geostationary orbits are used to capture andrebroadcast signals for intercontinental communications. Forexample, the INSAT series.
Global system for mobile communications is a cellulartelephony technology based on time division and frequencydivision multiplexing. Operates at 900, 1,800 and 2,700 MHz.For example, Airtel, Idea, etc.
This is a cellular telephony technology based on code division multiplexing. For example, Tata Indicom and RelianceCommunications.
TV remote controls use this as a means of communication.
Use radio waves to avoid the wire connecting the handset andthe base unit.
Satellite-based positioning service that uses radio waves.
Use radio waves instead of wires to connect to the PC. Forexample, wireless keyboard and mice.
5-GHz short range wireless technology that allows several typesof equipped electronic devices to interconnect.
Also known as IEEE 802.11a, b, g and n, this allows wirelesslocal area networks to be set up. It also allows local wirelessinternet connections called hotspots.
Radio frequency identification devices, in which objects/humans/animals wear small radio tagged devices that allowthem to be located. For example, radio collars for dogs.
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