تم الحل ✓
categoryالهندسة الكهربائية
schoolبكالوريوس
event_available2026-07-14
السؤال
Transcribed Image Text:
Let us consider a binary symmetric channel, as shown in Figure 1, where the probabilities of the input
X are Pr[X=0] = m and Pr[X = 1] = 1-m, and the error probability during the transmission from X
and Y is p.
1-p
0
0
X
Y
P
1
1-p
Figure 1: A typical binary symmetric channel, where the input is X and the output is Y.
a) Given that p = 1/3 and m = 3/4, find H(X), H(Y), H(Y|X), and I(X;Y). (8 marks)
b) Still given p = 1/3. Does m = 3/4 achieve the capacity of this binary symmetric channel? If not,
find the capacity of this binary symmetric channel and find the value of m achieving this channel
capacity. (4 marks)
c) Is the following statement TRUE or FALSE: The capacity of the binary symmetric channel is de-
pendent on the value of m. (No need to provide the justification for your answer.)
(2 marks)
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