Abstract: Abdominal elcetrocardiograms make it possible to determine the fetal heart rate and to detect multiple fetuses and are often used during labor and delivery.The background noise due to muscular activity and feotus motion, however, often had an amplitude equal to or grater than that of fetal heartbeat. A still more serious problem is the mother�s heart beat, which has an amplitude 2-10 times grater thatn that of the fetal heartbeat and often interferes in recording. The Maternal ECG (MECG) is the main source of interference in Fetal ECG (FECG) monitoring. The MECG is detected at all electrodes placed on the mother�s skin (thoracic and abdominal). The noise is found to be too strong for the algorithm (and the naked eye) to notice any fetal heart signal. This study briefs the implementation of Adaptive noise cancellation algorithms such as LMS algorithm using MATLAB suitable for real time implementation, which can be used during measurements and developed using VLSI.