Study guides, Class notes & Summaries

Introduction to wireless communication and its evolution

Fading: rapid fluctuations of received signal strength over short time intervals and/or travel distances • Caused by interference from multiple copies of Tx signal arriving at Rx at slightly different times • Three most important effects: 1. Rapid changes in signal strengths over small travel distances or short time periods. 2. Changes in the frequency of signals. 3. Multiple signals arriving a different times. When added together at the antenna, signals are spread out in time. This can caus...

What is wireless communication? • wireless communication is basically transmitting and receiving voice and data using electromagnetic waves in open space. They are basically free from wires. • Electromagnetic waves • Travel at speed of light (c = 3x108 m/s) • Has a frequency (f) and wavelength (l) » c = f x l • Higher frequency means higher energy photons • The higher the energy photon the more penetrating is the radiation

What is wireless communication? • wireless communication is basically transmitting and receiving voice and data using electromagnetic waves in open space. They are basically free from wires.

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