Apparatus and method for echo-cancellation
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United States of America Patent
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Oct 25, 2011
Grant Date -
Aug 18, 2005
app pub date -
May 19, 2003
filing date -
May 17, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
There is disclosed a multi-carrier transceiver system for use in echo cancellation. The transceiver system is arranged to generate from input data a multicarrier transmit signal comprising a plurality of multi-carrier data blocks. The transceiver system also has a multi-carrier signal receiver responsive to an input multi-carrier receive signal received from a remote signal transmitter. An echo canceller is arranged to generate from a pair of multi-carrier data blocks (u) a set of frequency-domain echo parameters for use in generating an echo signal, to generate the echo signal using the frequency-domain echo parameters, and to input the echo signal to the multi-carrier signal receiver for use in generating an echo-cancelled receive signal from the input receive signal and the echo signal.
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