ADAPTIVE ALGORITHM FOR SINUSOIDAL INTERFERENCE CANCELLATION

A simple method is presented for the adaptive cancelling of a sine wav e signal of known frequency in a time series. The system is characteri sed by the phase and amplitude parameters which are updated directly a ccording to an LMS-style algorithm. The convergence behaviours and var iances of these parameters are analysed. It is demonstrated that the p roposed method can effectively remove the 50Hz power line interference in the recording of electrocardiogams (EGG).