Wireless communication is the transfer of information over a distance without the use of electrical conductors or wire. Wireless Communication is generally considered to be of telecomunications. Common of wireless equipment in use today include :
- Proffesional LMR (Land Mobile Radio) and SMR (Specialized Mobile Radio)
- Consumer Two Way Radio including FRS (Family Radio Service), GMRS (General Mobile Radio Service) and Citizens Band (CB) radios
- The Amateur Radio Service (Ham Radio)
- Consumer and profesional marine VHF radios
- Cellular telephones and pagers
- Global Positioning System (GPS)
- Cordless computer peripherals
- Cordless telephone sets
- Satellite television
- Wireless gaming
The following situations justify the use of wireless technology :
- To span a distance beyond the capabilities of typical cabling
- To avoid obstacles such as physical structures, EMI, or RFI
- 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
In the last fifty years, wireless communications industry experienced drastic changes driven by many technology innovations.
Aplications of wireless technology :
- Security systems
- Television remote control
- Cellular telephony (phones and modems)
- WiFi
- Wireless energy transfer