Digital Signal Processing Reference
In-Depth Information
L = 2, f
d
= 400 Hz, T
s
= 25µs, I
d
= 15,500 Runs.
15
10
5
0
−5
−10
BA: T = 200
BA: T = 400
AR(1)−KF
Joint−KF
Subblock: T = 200
Subblock: T = 400
−15
−20
−25
0
2
4
6
8
10
12
14
16
18
20
SNR (dB)
FIgure 2.12
NCMSE versus SNR for
f
d
T
s
= 0.01,
l
d
= 15,
l
t
= 5,
l
b
= 20,
T
B
=
T
/
K
, and
K
= 2.
L = 2, f
d
= 400 Hz, Ts = 25µs, I
d
= 15,500 Runs.
10
0
10
−1
10
−2
BA: T = 200
BA: T = 400
AR(1)−KF
Joint−KF
Subblock: T = 200
Subblock: T = 400
10
−3
10
−4
0
2
4
6
8
10
12
14
16
18
20
SNR (dB)
FIgure 2.13
BER versus SNR for
f
d
T
s
= 0.01,
l
d
= 15,
l
t
= 5,
l
b
= 20,
T
B
=
T
/
K
, and
K
= 2.
SUBBLOCK. For the BA scheme, an oversampled CE-BEM is not possible for
T
= 200,
observe that the spectral leakage has worsened the channel estimation in BA (note the
floors of the two BA curves in Figure 2.14), and thus the curves for symbol detection.
Our SUBBLOCK maintains a satisfactory performance, while the performances of the
schemes of
AR
(1)-KF and Joint-KF have severely deteriorated.
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