A fast adaptive echo canceler with leaky proportionate NLMS algorithm

We propose a modified version of proportionate normalized least mean square (PNLMS) algorithm that achieves faster convergence in time domain with a marginal increment in implementation complexity than the existing one. The proposed algorithm, Leaky PNLMS, mainly differs from PNLMS by virtue of a leaky factor which speeds up the convergence behavior. We apply the proposed algorithm in case of an adaptive echo canceler. The performance of the proposed algorithm is examined in the said application with respect to the mean square error (MSE) and bit error rate (BER) curves.