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Pre-equalization enhancement for telecommunication networks

  • US 9,237,040 B1
  • Filed: 03/10/2015
  • Issued: 01/12/2016
  • Est. Priority Date: 03/10/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining a coherent bandwidth for pre-equalization coefficients associated with upstream transmissions received from a cable modem;

    based on the coherent bandwidth of the pre-equalization coefficients, calculating a time constant for a time domain filter for application to the pre-equalization coefficients;

    calculating, based on the time constant, filter coefficients for the time domain filter;

    applying the time domain filter with the filter coefficients to the pre-equalization coefficients to reduce noise introduced during generation of the pre-equalization coefficients and to generate signal-to-noise ratio (SNR)-enhanced pre-equalization coefficients; and

    sending the SNR-enhanced pre-equalization coefficients to the cable modem.

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