Apparatus and method of echo-cancellation

摘要

There is disclosed a multi-carrier transceiver system for use in echocancellation. The transceiver system is arranged to generate from input data ( 1 ) a multicarrier transmit signal (u) comprising a plurality of multicarrier data blocks. The transceiver system also has a multi-carrier signal receiver responsive to an input multi-carrier receive signal (Yi) received from a remote signal transmitter. An echo canceller ( 2000 ) is arranged to generate from a pair of multi-carrier data blocks (u) a set of frequency-domain echo parameters (W) for use in generating an echo signal, (Y), to generate the echo signal using the frequency-domain echo parameters (W), and to input the echo signal (Y) to the multi-carrier signal receiver for use in generating an echo-cancelled receive signal (Ei) from the input receive signal (Yi) and the echo signal (Y).