Digital Signal Processing Reference
In-Depth Information
The autocorrelation functions are shown in Figs.
6.33
and
6.34
. Note that both
signals have zero values for autocorrelation function except at the origin, where the
ACF is equal to the variance.
Exercise M.6.8
(MATLAB file
exercise_M_6_8.m
). Generate signals from Exer-
cise M.6.7:
X
1
(normal) and
X
2
(uniform) both with
m ¼
0 and
s
2
¼
1. Add a
sinusoidal signal of
o ¼ p
/4 to both signals
X
1
and
X
2
.
SIGN
A
L X1
1.5
1
0.5
0
−
0.5
−
500
0
500
1000
SIGN
A
L X2
1.5
1
0.5
0
−
0.5
−
1000
−
500
0
500
1000
Fig. 6.33
ACFs in Exercise M.6.7
SIGN
A
L X1
1
0.5
0
−
10
−
5
0
5
10
SIGN
A
L X2
1
0.5
0
−
10
−
5
0
5
10
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