Digital Signal Processing Reference
In-Depth Information
Figure 3.21 Bit error probability versus the parameters 6
t
and 6
Y
(a) or versus the two
mutual information values used in the EXIT function analysis (b).
again in agreement with the values observed from the simulation results of
Example 3.7.
The bit error probability as a function of the parameters
s
t
and
s
Y
appears as
Figure 3.21, which may also be plotted versus the mutual information values
I
(
d
i
,
t
i
) and
I
(
d
i
,
Y
i
). The plot confirms that as these mutual information values approaches
their upper limit of unity, the bit error probability becomes vanishingly small.
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