Digital Signal Processing Reference
In-Depth Information
L = 2, SNR = 20 dB, T
s
= 25µs, I
d
= 15,500 Runs.
−5
−10
−15
−20
BA: T = 200
BA: T = 400
AR(1)−KF
Joint− KF
Subblock: T = 200
Subblock: T = 400
−25
−30
0
50
100
150
200
250
300
350
400
f
d
(Hz)
FIgure 2.10
NCMSE versus
f
d
for SNR = 20 dB,
l
d
= 15,
l
t
= 5,
l
c
= 5,
l
b
= 5,
T
B
=
T
/
K
, and
K
= 2.
L = 2, SNR = 20 dB, T
s
= 25µs, I
d
= 15,500 Runs.
10
−1
10
−2
10
−3
BA: T = 200
BA: T = 400
AR(1)−KF
Joint− KF
Subblock: T = 200
Subblock: T = 400
10
−4
0
50
100
150
200
250
300
350
400
f
d
(Hz)
FIgure 2.11
BER versus
f
d
for SNR = 20 dB,
l
d
= 15,
l
t
= 5,
l
b
= 20,
T
B
=
T
/
K
, and
K
= 2.
four schemes under different SNRs: results similar to those in Figures 2.10 and 2.11 are
observed.
In
Figures 2.14
and
2.15
, longer data sessions are used to represent a more efficient
transmission scenario, where we take
l
d
= 35 symbols (12.5% symbols are now devoted
to training sessions). We now let α = 0.94 for
T
= 200, and α = 0.97 for
T
= 400 for
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