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Add as FriendWireless communications Technology PPT

by: Ritika Saxena

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Slide 1 :
Slide 2 : Wireless Communication Technology
Slide 3 : How Wireless Technology is Used Wireless describes the devices and technologies that are not connected by a wire Wireless communications is transfer of data without the use of wires
Slide 4 : Wireless data communications technologies include: - Bluetooth - Wireless LAN and WAN - Satellite - Cellular
Slide 5 : Approach of Wireless Technology Wireless devices can cover Distance: 300 feet (90 meters) Bandwidth: 54 Mbps Can also include Voice over IP (VoIP) Wireless network interface card can send and receive data over radio waves Smartphone is a combination of mobile phone and personal digital assistant
Slide 6 : Satellite Networks Used to transmit data over very long distance Repeater Located in the satellite itself Simply “repeats” the same signal to another location Used to transmit data from one earth station to another Transmission time is approximately 250 milliseconds
Slide 7 : Cellular Networks Modern cellular telephone network Built around the concept of low power transmitters With each “cell” handling a number of users Transmission towers are spread throughout a geographical area The same radio frequency channels can be reused by another tower Located a few miles away to avoid interference Maximizes the use of a limited range of frequency channels
Slide 8 : Cellular Networks 3G (third generation) technology Uses 100% digital transmission for both voice and data Transmission speed Up to 2 Mbps when stationary 384 Kbps for slow-moving pedestrians Up to 144 Kbps from a moving vehicle 2.5G has a maximum data transmission rate of up to 384 Kbps
Slide 9 : Wireless Applications Can be applied to the areas of Education Home entertainment Health Care Government and Military Office environments Event management Travel Construction and warehouse management Environmental research Industrial control
Slide 10 : Advantages of Wireless Technology Mobility Easier and less expensive installation Increased reliability Disaster recovery
Slide 11 : Disadvantages of Wireless Technology Radio signal interference Security Health risks
Slide 12 :
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