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Capturing and Analyzing Impulse Noise

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Capturing and Analyzing Impulse Noise

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  • Author: Paul Marr
Impulse noise is not new to the outside plant (OSP) and customer premises. What is new is the fact that the latest high-speed DSL technologies (such as VDSL2) typically operate at critical SNR margins, use a much broader part of the frequency spectrum and are more susceptible to impulse noise than legacy voice or ADSL. The properties of impulse noise are what make it such a challenge for broadband service providers. It is intermittent by nature, more difficult to detect and analyze than traditional interference, and tends to defy traditional plant troubleshooting methods. While the ultimate goal is to mitigate its effects, the first steps are to detect, capture and analyze it to determine the best course of action.

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