43rt

1. Introduction
• Wireless communication
• is the transfer of information between two or more
points that are not connected by a physical wire.
• The rapidly expanding technology of cellular
communication, wireless LANs, and satellite services
will make information accessible anywhere and at any
time

2. Introduction
The communication can be via
• Radio - most common wireless technologies use
radio waves
• Covers from few meters to thousands or even
millions of KMs
• Free-space optical - uses light propagating in free
space to transmit wirelessly data
• Electromagnetic induction - has short range
communication and power