Input: $E{3}_i$

Output: ${\tilde{E}}_i$

Initialization: ${\tilde{E}}_i=\left\{E{3}_i^{\left(1\right)}\right\}$ , $p=1,q=2$

Repeat:

$d={\Vert E{3}_i^{\left(p\right)}-E{3}_i^{\left(q\right)}\Vert }_2$

if $d>T$

then

$q=q+1$

Until $q>n_i$