Figure 1.

A block diagram of the proposed structure $y\left(n\right)$: abdominal recording (AECG), f(n): FECG in AECG, x(n): MECG in AECG, $\widehat{x}\left(n\right)$: reference MECG estimated by reference formation scheme (SWSVD), $\widehat{f}(n$: extracted FECG).