IMPULSE NOISE MITIGATION UNDER OUT-OF-BAND INTERFERENCE CONDITIONS
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Abstract
An impulse noise mitigation circuit (INMC) may set a cut-off frequency of each of two high pass filters to bound a frequency bandwidth of a desired signal, wherein a first of the two filters allows frequencies higher than the frequency bandwidth of the desired signal, and a second of the two filters allows frequencies lower than the frequency bandwidth of the desired signal. The INMC may compute and store a mean magnitude separately for a first signal response of the first filter and a second signal response of the second filter. The INMC may select the first filter for impulse noise mitigation when the mean magnitude of the second filter is greater than the mean magnitude of the first filter. The INMC may select the second filter for impulse noise mitigation when the mean magnitude of the first filter is greater than the second filter.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. A system comprising:
one or more filters configurable to have a first high-pass response and a second high-pass response, signal magnitude determination circuitry, and a filter response selection circuitry, wherein; said signal magnitude determination circuitry is operable to measure mean magnitude, over a determined time interval, of a signal processed using said first high-pass response; said signal magnitude determination circuitry is operable to measure mean magnitude, over a determined time interval, of a signal processed using said second high-pass response; and said filter response selection circuitry is operable to select which of said first high-pass response and said second high-pass response to use for suppression of impulse noise in a received signal. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method comprising:
in a receiver comprising one or more filters configurable to have a first high-pass response and a second high-pass response, signal magnitude determination circuitry, and a filter response selection circuitry; measuring, by said signal magnitude determination circuitry, mean magnitude, over a determined time interval, of a signal processed using said first high-pass response; measuring, by said signal magnitude determination circuitry, mean magnitude, over a determined time interval, of a signal processed using said second high-pass response; and selecting, by said filter response selection circuitry, which of said first high-pass response and said second high-pass response to use for suppression of impulse noise in a received signal. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
Specification