L2 norm provides better results with moderate
and low noise levels although it requires high sampling
frequency, high digitizing resolution, and higher
computing time to achieve its full performance
L1 needs both low cost
hardware and lower computing time using conventional
architectures. Also, results show that 6-8 b of resolution
are enough for most applications
while L1 and L2 norms
L2 method requires a high resolution (10-12 b)
from the A/D converter to reach maximum accuracy (Fig.
5). In contrast, correlation
L1 norm show no increase
in performance when digitizing with 6 or more bits. This
fact allows the use of low resolution (cost) converters for
applications requiring a moderate level of accuracy