Transceiver for echo and near-end crosstalk cancellation...

Details Transceiver for echo and near-end crosstalk cancellation... Transceiver for echo and near-end crosstalk cancellation...

2007-06-26

2007-06-26

Singh, Ramnandan (Department: 2614)

Multiplex communications

Duplex

Transmit/receive interaction control

C370S287000, C370S289000, C379S406010, C379S417000

Reexamination Certificate

active

10389966

ABSTRACT:
A transceiver for echo and near-end crosstalk cancellation without a loop timing configuration. The transceiver comprises a receiver, a timing recovery circuit, a same-channel phase interpolator, an echo canceller, a near-channel phase interpolator and a near-end crosstalk (NEXT) canceller. The same-channel phase interpolator and the near-channel phase interpolator receive a phase choosing signal from the timing recovery circuit to determine a specific phase from different phases. The same-channel phase interpolator generates a same-channel phase-modified signal with the specific phase and outputs the phase-modified signal to the echo canceller to cancel an echo in the received signal. The near-channel phase interpolator generates a near-channel phase-modified signal with the specific phase and outputs the near-channel phase-modified signal to the NEXT canceller to cancel a NEXT signal in the received signal.

REFERENCES:
patent: 6240128 (2001-05-01), Banerjea et al.

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