Transcript An Introduction to Digital Communications What’s the difference? Advantages of Digital Systems • More resilient to interference and imperfections • Can be mathematically.

An Introduction to
Digital Communications
What’s the difference?
Advantages of Digital Systems
• More resilient to interference and imperfections
• Can be mathematically processed allowing
compression or enhancement of data
• Information can be stored as numerical data:
data storage cheap
• Longevity: data can be stored over very long
periods of time.
Disadvantages of Digital Systems
• Digital signal will not be an exact copy of the
original analogue signal: sampling error
• Complex processing involved
• Takes time to do
• The transmitter and receiver have
to be synchronised
Now you have a try:
Activity AA5.25 Activities 1,2,3&4
Problems with sampling
Try Activity AA25.25 Activity 5
Your conclusions?
Cutting Costs
Source of
Serial Data
Source of
Parallel Data
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