Chapter 5

The given data can be summarised as shown in the following table : Message Probability Code A 1/5 0 0 B 1/4 0 1 C 1/4 1 0 D 3/10 1 1 Assumption : Let us assume that the message transmission rate be r = 4000 messages/sec. (a) To determine the source entropy : H = log2 (5) + log2 (4) + log2 (4) + 0.3 log2 (10/3) ................
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