Fig. 15: CDFG of QRS complex.

Here, the multiplication of y(n) with the first column of \({\left({{\bf{H}}}^{{\bf{T}}}{\bf{H}}\right)}^{{\boldsymbol{-}}{\bf{1}}}\) and the first element of \({{\bf{H}}}^{{\bf{T}}}{\bf{X}}\left({\bf{n}}\right)\) is executed, where \({{\bf{C}}}_{{\bf{3}}{\bf{k}}{\boldsymbol{+}}{\bf{j}},{\bf{i}}}\) are elements of \({\left({{\bf{H}}}^{{\bf{T}}}{\bf{H}}\right)}^{{\boldsymbol{-}}{\bf{1}}}\) and \({{\bf{y}}}_{{\bf{3}}{\bf{k}}{\boldsymbol{+}}{\bf{j}}}({\bf{n}})\) the output of the filter bank, with K = 0, 1 and j = 1, 2, 3