What is Communications

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EE341 Introduction to Communication Systems

• What is Communications?
• Reliable transfer of information from one source
  to another in an efficient manner
• History
• 200 years ago - manual communication
• 100 50 years ago electrical comm.
• Telegraph, telephone, radio, television
• Shannon's 1948 paperA Mathematical Theory of
  Communication
• 50 25 years ago foundations for modern comm.
• Satellite comm., Computer Network, Invention of
  IC
• Now digital comm.
• Wireless, Optical, Broad band
• Future
• Any time/Any where communication

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Evolution of communication
All years here are not exactly. There are even
lawsuits on some of them
Telegraph (1844)
Telephone (1876)
Radio (1906)