01-05-2012, 12:12 PM
Wireless Communications Using RATs
wireless communication.ppt (Size: 127 KB / Downloads: 40)
Not your average radio
HDTV, W-LAN and Mobile Telephony are all a form of Radio Access Technology (RAT)
Radio communications was invented in the late 1800’s by Marconi and Tesla
Radio is wave energy that is transmitted & received through the air at frequencies that are not visible or audible by humans
W-LAN Overview
W-LAN, 802.11 and WiFi are all names for wireless networking
Networking allows computing devices to communicate with each other and to share resources and workloads
Radio devices are used to replace wires in W-LANs
Wireless Access Points allow computing devices with wireless Adapter Cards to connect to WWW hosts, local hosts or peripherals on the net
W-LAN Benefits
Wireless networks give the ability to work and share computers from anywhere
W-LANS are implemented with standards that describe how they should behave
Standards allow interoperability between brands and lower costs
Cheaper communication devices allow for community networks (eg. Café Hotspots)