Slide 2:
Introduction
Wireless
Communication
History
Photophone
Radio
Electro Magnetic Spectrum
Types of wireless communication
Examples of wireless communication
Applications
Advantages
Disadvantages
Conclusion
WIRELESS :
WIRELESS Any type of electrical or electronic operation accomplished without use of wires
Wireless connections use air to connect sending and receiving devices
Channel is a division in transmission medium
COMMUNICATION :
COMMUNICATION It is transmission of signals i.e. sending of electromagnetic waves by electronic transmitters. sending Sending
device message Connection
device Communication
channels Connection
device message Receiving
device Sending
device message Connection
device Communication
channels Connection
device message Receiving
device Sending
device message Connection
device Communication
channels Connection
device message Receiving
device
WIRELESS COMMUNICATION :
WIRELESS COMMUNICATION Communication networks are generally implemented with some type of remote information transmission system that uses electromagnetic waves
Wireless communication may be via:
Radio frequency communication
Microwave communication
Infrared short range communication
Wireless modem:– It is a modulator-demodulator which enables communication at fastest speeds, typically in bits per second
APPLICATIONS :
APPLICATIONS SECURITY SYSTEMS
TELEVISION REMOTE CONTROLS
CELLULAR TELEPHONES
WI-FI
WIRELESS ENERGY TRANSFER
COMPUTER INTERFACE DEVICES
CELLULAR PHONES :
CELLULAR PHONES Use radiowaves to enable the operator to make phone calls from many locations worldwide.
Wi – Fi WIRELESS FIEDELITY :
Wi – Fi WIRELESS FIEDELITY Analogous to traditional ethernet network
Enables faster connections
Better range
Better security
More spatial capacity i.e. bits per second per square metre