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Apparatus and method for adaptively optimizing equalization delay of data communication equipment

  • US 4,811,360 A
  • Filed: 01/14/1988
  • Issued: 03/07/1989
  • Est. Priority Date: 01/14/1988
  • Status: Expired due to Fees
First Claim
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1. A data communication equipment equalizer which is arranged to receive and process data which has been sent over and distorted by a channel, said equalizer comprising:

  • (a) a first impulse response means having a coefficient update means, wherein said first impulse response means is arranged to obtain at least a first group of said data, and to adapt equalizer coefficients of said coefficient update means based on said at least first group of obtained data at least until said equalizer coefficients are sufficiently adapted to allow substantially error free data transmission;

    (b) a buffer delay means for receiving at least a second group of said data and for delaying at least said second group data until said equalizer coefficients of said first impulse response means have been sufficiently adapted to allow substantially error free transmission of at least said second group data, and for providing delayed data, after said equalizer coefficients are sufficiently adapted to allow substantially error free transmission, to an impulse response means which processes at least said delayed second group data according to said adapted equalizer coefficents and provides therefrom processed data samples; and

    (c) data detector means for receiving said processed data samples and determining what data values to assign to said processed data samples.

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