Radio frequency signal fault signature isolation in cable network environments
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United States of America Patent
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Feb 6, 2018
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app pub date -
Dec 7, 2016
filing date -
Apr 25, 2016
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Abstract
An example method for radio frequency (RF) signal fault signature isolation in cable network environments is provided and includes searching in phase domain for an echo in a channel response characterizing a channel in a cable network, the channel facilitating communication of a multi-tone signal in the cable network; identifying a phase in which the echo is found; calculating a tap amplitude corresponding to the identified phase, the calculated tap amplitude being indicative of group delay in the channel; correcting for the group delay in the multi-tone signal, for example, by subtracting the calculated tap amplitude from the multi-tone signal; and identifying a fault signature when amplitude of the corrected signal is greater than a threshold and the identified fault signature triggers operational maintenance of the cable network.
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