05-06-2012, 03:06 PM
WIRLESS COMMUNICATION
WIRLESS COMMUNICATION.pptx (Size: 193.65 KB / Downloads: 2)
introduction
Short and long distance transferring of data without the use of electrical wires.
Forms of energy like radio frequency(RF), infrared light, laser light…etc are used to transfer information without the use of wires
wireless communications has revolutionized the way societies function.
INFRARED WIRELESS TRANSMISSION
Uses propagation of light waves in the infrared band as a transmission medium for communication
point-to-point system
The transmitter and receiver must be pointed at each other
Path from the transmitter to the receiver must be clear of obstructions
Also called directed LOS systems
Links can be temporarily created for a data exchange session between two users
diffuse systems
Link is always maintained between any transmitter and any receiver.
Transmitter employs a wide transmit beam and the receiver has a wide field-of-view
LOS path is not required
Suited to the wireless LAN application
BLUETOOTH
Technology which enable short-range wireless voice and data communication anywhere in the world.
Replacement of cables.
No need for line of site connection in order to communicate.
Facilitates connections of devices within a range of 10m.
WIRLESS COMMUNICATION.pptx (Size: 193.65 KB / Downloads: 2)
introduction
Short and long distance transferring of data without the use of electrical wires.
Forms of energy like radio frequency(RF), infrared light, laser light…etc are used to transfer information without the use of wires
wireless communications has revolutionized the way societies function.
INFRARED WIRELESS TRANSMISSION
Uses propagation of light waves in the infrared band as a transmission medium for communication
point-to-point system
The transmitter and receiver must be pointed at each other
Path from the transmitter to the receiver must be clear of obstructions
Also called directed LOS systems
Links can be temporarily created for a data exchange session between two users
diffuse systems
Link is always maintained between any transmitter and any receiver.
Transmitter employs a wide transmit beam and the receiver has a wide field-of-view
LOS path is not required
Suited to the wireless LAN application
BLUETOOTH
Technology which enable short-range wireless voice and data communication anywhere in the world.
Replacement of cables.
No need for line of site connection in order to communicate.
Facilitates connections of devices within a range of 10m.
