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All-digital timing control for multi-channel full-duplex transceiver

  • US 8,248,974 B2
  • Filed: 06/23/2009
  • Issued: 08/21/2012
  • Est. Priority Date: 06/25/2008
  • Status: Active Grant
First Claim
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1. A method for controlling a timing for a multi-channel full-duplex transceiver, the method comprising the following steps:

  • generating a first clock and a second clock using a controlled oscillator in accordance with a control code, where a frequency of the second clock corresponds to a frequency of the first clock;

    transmitting in parallel a plurality of outgoing signals onto a plurality of channels, respectively, in accordance with a timing defined by the first clock;

    receiving, sampling, and equalizing in parallel a plurality of incoming signals from said plurality of channels, respectively, in accordance with a timing defined by the second clock to generate in parallel a plurality of equalized signals, respectively;

    converting in parallel said plurality of equalized signals into a plurality of refined signals, respectively, in accordance with a timing defined by the first clock; and

    generating the control code, wherein in a first operation mode the control code is established by detecting a timing difference between an output clock of the controlled oscillator and a reference clock, and in a second operation mode the control code is established by detecting a timing embedded in one of said refined signals.

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