Nonlinear echo cancellation using a correlation LMS adaptation scheme

A robust nonlinear echo cancellation is proposed, where a third-order adaptive Volterra filtering is employed along with a correlation LMS adaptation scheme. In particular, the adaptive Volterra filtering technique is employed to compensate for the nonlinear distortion in the echo path (e.g., the DAC of the hybrid network). Finally, the robustness in the echo cancellation of the proposed approach is demonstrated using computer simulations, where high attenuation of echo signals is achieved even in the double-talk situation.