Adaptive analog echo/next cancellation

Abstract

An adaptive analog echo/near-end crosstalk (NEXT) cancellation system includes a processor configured to receive a first digital signal corresponding to a first signal received by the system, receive a second digital signal corresponding to a second signal transmitted by the system, and generate a first error control signal based on each of the first digital signal and the second digital signal. A cancellation device is configured to generate a second error control signal based on a first analog signal corresponding to the first signal. The cancellation device selectively outputs the second error control signal or the first error control signal based on whether the system is operating in a first mode or a second mode, respectively. The cancellation device selectively outputs a cancellation signal according to one of the second error control signal and the first error control signal, and a second analog signal corresponding to the second signal.

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