|
Feature
|
Analog Communication
|
Digital Communication
|
|
Signal Type
|
Continuous-time (sine wave, etc.)
|
Discrete-time (binary 0s and 1s)
|
|
Noise Immunity
|
Low (prone to distortion)
|
High (noise can be
detected/corrected)
|
|
Bandwidth Requirement
|
Usually, lower
|
Usually, higher
|
|
Transmission Quality
|
Degrades with distance
|
Maintains quality with
regeneration
|
|
Security
|
Less secure
|
More secure (encryption possible)
|
|
Cost
|
Cheaper hardware
|
Costlier due to
encoding/processing
|
|
Multiplexing
|
Frequency Division Multiplexing
(FDM)
|
Time/Frequency/Code Division
Multiplexing
|
|
Applications
|
Analog radio, landline telephony
|
Internet, mobile phones,
satellite links
|
|
Signal Processing
|
Harder to analyze and process
|
Easier (digital circuits,
software tools)
|
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