More on analysis

This commit is contained in:
Marius Drechsler 2024-07-28 19:03:18 +02:00
parent 429df6bc68
commit 4346630b65
11 changed files with 657 additions and 2385 deletions

3
content/BACH.typ Normal file
View file

@ -0,0 +1,3 @@
= Boundary Adaptive Clustering with Helper Data

View file

@ -332,7 +332,7 @@ lim_(s arrow.r infinity) phi_"max,odd" &= frac(s-1, 2^n dot s dot 4) #<eq:offset
&= frac(1, 2^n dot 4) = phi_"max,even"
$
== Improvements
== Improvements<sect:smhd_improvements>
The here proposed S-Metric Helper Data Method can be improved by using gray coded labels for the quantized symbols instead of naive ones @smhd.
#align(center)[
@ -391,14 +391,23 @@ From $m >= 6$ onwards, $(x_"1" (m)) / (x_"100" (m))$ approaches $~1$, which mean
=== Impact of temperature
Usually we will perform enrollment at room temperature.
We will now take a look at the impact of changing the temperature both during the enrollment and the reconstruction phase.
We will now take a look at the impact on the error rates of changing the temperature both during the enrollment and the reconstruction phase.
==== Different reconstruction temperature
The most common case to look at, is if we consider a fixed temperature during enrollment, most likely $25°C$.
Since we wont always be able to recreate lab-like conditions during the reconstruction phase, it makes sense to look at the error rates at which reconstruction was performed at different temperatures.
#figure(
include("../graphics/plots/temperature/25_5_re.typ"),
caption: [Reconstruction at different temperatures]
)<fig:smhd_tmp_reconstruction>
@fig:smhd_tmp_reconstruction shows the results of this experiment conducted with a 2-bit configuration.\
As we can see, the further we move away from the temperature of enrollment, the higher the bit error rates turns out to be.
// Table here with BER without helper data and with 100 metrics for best improvement case. Talk about improvements in numerical parts
==== Different enrollment temperature
=== Gray coding
In @sect:smhd_improvements, we discussed how a gray coded labelling for the quantizer could improve the bit error rates of the S-Metric method.