A Robust Error-Adaptive NLMS Algorithm for Echo Cancellations

초록

Echo canceller using adaptive filtering techniques has been used in various applications in solving communications system problems. This paper presents an optimal algorithm, the error-adaptive NLMS (Normalized Least Mean Square) algorithm, which is able to remove echo in communication environment by using adaptive parameter μ. This parameter μ is actively changing a step size to update weights by means of the magnitude of the moving average of the absolute error signals. The simulation results show that the echo cancellation performance of the proposed algorithm is much better than NLMS algorithm under the single-talk as well as the double-talk conditions.