TEST BANK FOR Digital Communications a Discrete-Time Approach 2ND Edition By Michael Rice
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(a) 2
0
E T
P
(b) 1 2 10 2
0
E T
P
T
(c)
1
2
E
P
(d)
2
2
E
P A
(e)
3
8
E
P
(f)
0
E T
P
(g) 1
4
0
E
a
P
(h) 2 3
4
0
E A T
P
(i)
3 1/3 3 1/3
2/3
3
1 3 3 3 3 3 lim lim 3 lim 0
T
t
T T T
E
d
T T
P t
T T T
t
2.2
(a) 8
(b) 0
(c)
2
4
(d) 1
2.3
(a)
1
X (s) 5
s
(b) ( ) 5 ln(5 6 ) ln(5)
( 1
ln
)
(5)
x t t
s
t e e
X s
(c) 5
s 1
(d) 5
s 1
2.4
(a) 2 2
2
3 2 3
( ) 2 ( ) 4 4 ( )
( ) 2 4 4 2 4 4
t ut t t ut
X s s s
s s s s
x t
(b)
2 3 2 3
2
3 2 3
( )
(
2 () 4 4 ()
2 4 4 2620 4
3 3 3 3
)
x t t e tu t t t e t
X s
u t
s s
s s s s
(c)
0
0 0
0 0
0 0
2 2 2 2 2 2
0 0 0
cos ( )
4
cos cos sin sin ( )
4 4
1 cos 1 sin ( )
2 2
) 1 1 1
(
(
2
)
2 2
t ut
t t u t
t t u t
X s s
s s s
x t
s
(d)
3
0
3
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3
0 0
0 0
2 2 2 2 2 2
0 0 0
( ) cos ( )
cos cos sin sin ( )
cos sin ( )
( 3
3
3 3
1 3
2 2
) 1 3 1 3 3
2 3 2 3 2 3
t
t
t
x t e u t
e ut
e
t
t t
t t
s
s
u t
X s
s
s
s
2.5
(a)
(2 ) (2 )
2
2
2
( )
( )
cos( ) 2sin( ) ( )
c
1 1
2 2
2 2
( ) 1 1 ( )
2 2
1 1
2 2
5 os 63.4 ( )
j t j t
t jt jt jt jt
t
t
X s
je je u t
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j j
s j s j
xt j e j e u t
e e e
e
e ut
t
t
(b)
2
2 2
( )
( ) 4 1 (
4 4 4
2 1 1
( ) 4 t 4 t 4 t t t )
X s
u t t e u t
s s s
x t e e te e
(c)
2
2 2 2
4 4 4
2 2
( ) 4 4 4
( )
1
t t t ( ) 4 t 1 t ( )
s s
x t e te e e
X s
s
u t t e u t
2.6
(a)
3 2
3 2 1
3 2 1
( ) 3 ( )
( )
t 2 t t
s s s
x t e e e
X s
u t
(b)
2 3 2
2 3 2
229 54 216 108
3 3 3 2 2 1
(
( ) 135 13
) 229 135 26 t 216 108 t 13 t ( )
X s
t t
s s s s s s
x t e t e e u t
(c)
2 3 2
2 3 2
( ) 31 1
32 31 30 21
32 30 21 20
3 3 3 2 2 1
( ) t 20 t t ( )
s s s s s s
x
X s
t t t e t e e u t
[Solved] TEST BANK FOR Digital Communications a Discrete-Time Approach 2ND Edition By Michael Rice
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- Submitted On 12 Nov, 2021 06:20:44
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