System and method for the adjustment of compensation applied to a signal using filter patterns
First Claim
1. A method for adjusting a signal, comprising:
- applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a data signal using an equalizer before or after the distortion occurs to generate an output signal;
using a clock signal, sampling the output signal at a sampler to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal;
selecting one or more filter patterns from a set of a plurality of filter patterns using a controller, each filter pattern comprising a plurality of data values;
using the controller, monitoring the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns;
using the controller, detecting a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns; and
using the controller, adjusting the at least one of the loss compensation and the offset compensation applied to the data signal based on the error value.
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Abstract
A method for adjusting a signal includes applying a compensation for distortion to a data signal to generate an output signal. The method also includes sampling the output signal to generate data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal. The method further includes selecting one or more filter patterns and monitoring the output signal for patterns of data values corresponding to the selected filter patterns. The method further includes detecting a pattern of data values in the output signal corresponding to one of the selected filter patterns and adjusting the compensation applied to the data signal based on the error value.
87 Citations
30 Claims
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1. A method for adjusting a signal, comprising:
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applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a data signal using an equalizer before or after the distortion occurs to generate an output signal; using a clock signal, sampling the output signal at a sampler to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal; selecting one or more filter patterns from a set of a plurality of filter patterns using a controller, each filter pattern comprising a plurality of data values; using the controller, monitoring the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns; using the controller, detecting a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns; and using the controller, adjusting the at least one of the loss compensation and the offset compensation applied to the data signal based on the error value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An adaptive equalizer, comprising:
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an equalizer configured to apply at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a data signal before or after the distortion occurs to generate an output signal; a sampler configured to; receive the output signal and a clock signal; and using the clock signal, sample the output signal to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal; and a controller configured to; select one or more filter patterns from a set of a plurality of filter patterns, each filter pattern comprising a plurality of data values; monitor the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns; detect a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns; and adjust the at least one of the loss compensation and the offset compensation applied to the data signal based on the error value. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for adjusting a signal, comprising:
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applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a data signal using an equalizer before or after the distortion occurs to generate an output signal; using a clock signal, sampling the output signal at a sampler to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal; selecting one or more filter patterns from a set of a plurality of filter patterns using a controller, each filter pattern comprising a plurality of data values; using the controller, monitoring the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns; using the controller, detecting a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns; and using the controller, adjusting the at least one of the loss compensation and the offset compensation applied to the data signal based on the detected pattern.
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30. An adaptive equalizer, comprising:
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an equalizer configured to apply at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to the data signal before or after the distortion occurs to generate an output signal; a sampler configured to; receive the output signal and a clock signal; and using the clock signal, sample the output signal to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal; and a controller configured to; select one or more filter patterns from a set of a plurality of filter patterns, each filter pattern comprising a plurality of data values; monitor the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns; detect a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns; and adjust the at least one of the loss compensation and the offset compensation applied to the input data signal based on the detected pattern.
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Specification