Impulse Noise Cancellation on Power Lines

In this research we have investigated the performance of using an adaptive NLMS lter to cancel the impulse noise on powerlines. Using 930 impulses from various sources, which had measured and collected between the live-neutral channel(LN) and neutralearth channel(NE) of the powerline, we have simulated our proposed adaptive algorithm. Di erent cancellation results have obtained via changing the nature of the input to the canceler by processing the collected signals in many ways such as down sampling and interpolating the originally measured powerline signal. In order to make the decision to use the adaptive NLMS algorithm for cancellation, rst we studied the correlation between the LN and NE channels and then used the NE channel to estimate the noise on LN channel using our adaptive NLMS lter. Finally by subtracting the estimated signal by LN channel signal, the cancellation result has obtained.