Digital Signal Processing Reference
In-Depth Information
i=0
i=0
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
i=1
i=1
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
i=2
i=2
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
i=3
i=3
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
i=4
i=4
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
i=5
i=5
1
1
0.5
0.5
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.1
0.2
0.3
0.4
0.5
Frequency (Hz)
Frequency (Hz)
(a)
(b)
FIGURE 5.2 : Modulus of the missing-data spectral estimates obtained via the MAPES-
EM algorithms at different iterations [ N
=
128
,σ
n
=
0
.
01, 51 (40%) missing samples].
(a) MAPES-EM1 and (b) MAPES-EM2.
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