Detecting Residual ISI Components Using Two Data Patterns
First Claim
1. A method comprising:
- accessing by one or more circuit components an input signal from a receiver, the input signal comprising a series of bits and further comprising residual boundary intersymbol interference (ISI);
identifying by the one or more circuit components a first bit sequence in the input signal;
identifying by the one or more circuit components a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual boundary ISI for measurement;
determining by the one or more circuit components a difference between first boundary error in the first bit sequence and second boundary error in the second bit sequence; and
measuring by the one or more circuit components the particular residual boundary ISI by the difference for use in adaptive equalizer control.
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Accused Products
Abstract
In one embodiment, a method includes accessing an input signal from a receiver that includes a series of bits and further comprising residual boundary intersymbol interference (ISI). The method includes identifying a first bit sequence in the input signal and identifying a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual boundary ISI for measurement. The method includes determining a difference between first boundary error in the first bit sequence and second boundary error in the second bit sequence and measuring the particular residual boundary ISI by the difference for use in adaptive equalizer control.
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Citations
20 Claims
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1. A method comprising:
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accessing by one or more circuit components an input signal from a receiver, the input signal comprising a series of bits and further comprising residual boundary intersymbol interference (ISI); identifying by the one or more circuit components a first bit sequence in the input signal; identifying by the one or more circuit components a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual boundary ISI for measurement; determining by the one or more circuit components a difference between first boundary error in the first bit sequence and second boundary error in the second bit sequence; and measuring by the one or more circuit components the particular residual boundary ISI by the difference for use in adaptive equalizer control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising one or more circuit components configured to:
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access an input signal from a receiver, the input signal comprising a series of bits and further comprising residual boundary ISI; identify a first bit sequence in the input signal; identify a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual boundary ISI for measurement; determine a difference between first boundary error in the first bit sequence and second boundary error in the second bit sequence; and measure the particular residual boundary ISI by the difference for use in adaptive equalizer control.
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10. A system comprising:
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means for accessing by one or more circuit components an input signal from a receiver, the input signal comprising a series of bits and further comprising residual boundary ISI; means for identifying by the one or more circuit components a first bit sequence in the input signal; means for identifying by the one or more circuit components a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual boundary ISI for measurement; means for determining by the one or more circuit components a difference between first boundary error in the first bit sequence and second boundary error in the second bit sequence; and means for measuring by the one or more circuit components the particular residual boundary ISI by the difference for use in adaptive equalizer control.
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11. A method comprising:
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accessing by one or more circuit components an input signal from a receiver, the input signal comprising a series of bits and further comprising residual data ISI; identifying by the one or more circuit components a first bit sequence in the input signal; identifying by the one or more circuit components a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual data ISI for measurement; determining by the one or more circuit components a difference between first level error in the first bit sequence and second level error in the second bit sequence; and measuring by the one or more circuit components the particular residual data ISI by the difference for use in adaptive equalizer control. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system comprising one or more circuit components configured to:
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access an input signal from a receiver, the input signal comprising a series of bits and further comprising residual data ISI; identify a first bit sequence in the input signal; identify a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual data ISI for measurement; determine a difference between first level error in the first bit sequence and second level error in the second bit sequence; and measure the particular residual data ISI by the difference for use in adaptive equalizer control.
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20. A system comprising:
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means for accessing by one or more circuit components an input signal from a receiver, the input signal comprising a series of bits and further comprising residual data ISI; means for identifying by the one or more circuit components a first bit sequence in the input signal; means for identifying by the one or more circuit components a second bit sequence in the input signal that differs from the first bit sequence with respect to one or more data values of one or more bits in the first and second bit sequences corresponding to particular residual data ISI for measurement; means for determining by the one or more circuit components a difference between first level error in the first bit sequence and second level error in the second bit sequence; and means for measuring by the one or more circuit components the particular residual data ISI by the difference for use in adaptive equalizer control.
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Specification