Communication (information theory)

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The concept of communication is coined / shaped in the information theory by the transmitter-receiver model : Information is coded in characters and then transmitted from a transmitter to a receiver via a transmission channel. It is important that the sender and recipient use the same coding so that the recipient can understand the message . Information theory goes beyond the ( syntactic ) sender-receiver model: the meaning and the information content always depend on the semantic context of a transmission.

In information theory, the information content of a message can be quantified precisely and is measured using the dimensionless unit Shannon . The decisive factor here is the minimum number of signals ( bits ) required to encode a character. It is also possible that the signals are corrupted by interference during transmission . Information theory offers tools that can be used to calculate how much redundancy a message must contain in order to compensate for a given level of interference.

literature

  • Werner Meyer-Eppler: Fundamentals and applications of information theory. Springer Verlag, Berlin / Heidelberg 1959.
  • Christoph Meinel, Harald Sack: Digital communication . Networking, multimedia, security, Springer Verlag, Berlin / Heidelberg 2009, ISBN 978-3-540-92922-2 .

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