Question
. An analog communication system with random variable X has probability density function f x ( ) defined by kx 4 , x 1 f
. An analog communication system with random variable X has probability density function f x( ) defined by
kx4,x 1
f x( ) =k(2 x2), 1 x1
kx4,x 1
Determine
i. the value of k.[3marks] ii. F x( )[5marks] iii. x[5marks]
iv. Sketch the graph of f x( ) and F x( ).[5marks]
b.Consider a communication channel where each substation transmits and receive data.The probability between the substations is shown in figure 3.
Figure 3
i. Draw a transition diagram.[5marks] ii. Write down a transition matrix, P.[4marks] iii. Name the type of matrix in Q3(b)[2marks] iv. P X( 2 =2 X1 =1X0 =3)[3marks]
v. P X( 2 =2 X3 =3X0 =2)[3marks]
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