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Multi-pair gigabit Ethernet transceiver

  • US 7,801,241 B2
  • Filed: 08/03/2009
  • Issued: 09/21/2010
  • Est. Priority Date: 11/09/1998
  • Status: Expired due to Fees
First Claim
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1. An integrated circuit communication device comprising:

  • an intersymbol interference (ISI) compensation filter having a substantially inverse impulse response to the impulse response of a pulse shaping filter of a remote transmitter, wherein the ISI compensation filter comprises;

    an inverse partial response filter having an impulse response substantially an inverse of the impulse response of the pulse shaping filter of the remote transmitter, so as to substantially compensate an input digital signal for an ISI component introduced by the pulse shaping filter of the remote transmitter, wherein the inverse partial response filter is implemented with a characteristic feedback gain factor K, and wherein the inverse partial response filter operates in accordance with a non-zero value of the characteristic feedback gain factor K during communication initialization and wherein the value of the feedback gain factor K is ramped down to zero after a pre-defined interval.

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