Milestone $1$: Linear systolic array

implementation for $4-$point

discrete Hadamard transform

Target architecture:

If tag $=1$: $x_{\text{O}\text{U}\text{T}}larr{x}_{LN}+Y_{IN}$ :

Else $x_{\text{O}\text{U}\text{T}}larr{x}_{IN}-Y_{IN}$; Endif.