Detecting and measuring interference contained within a digital carrier
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United States of America Patent
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Dec 29, 2009
Grant Date -
Sep 4, 2003
app pub date -
Feb 26, 2003
filing date -
Mar 4, 2002
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Abstract
A method and system for measuring noise and or interference in a communications signal without taking the signal out of service. In the present invention the communications signal is converted from an RF signal into an IF signal. The IF signal is then digitized and stored. The stored signal is processed to determine the interference signal. The interference signal is calculated from an error vector produced by a blind equalizer demodulator. The interference signal is extracted and presented to a user.
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