Determining doppler bandwidth of a received signal from a determined power of a signal
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United States of America Patent
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Aug 5, 2003
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N/A
app pub date -
Oct 23, 2000
filing date -
Feb 25, 1998
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Abstract
SIR (signal to impairment power ratio) of a received signal in a communications system is determined from DC components produced by at least two successive stages of performing a non-linear operation, e.g., squaring, the signal and separating the DC component from a non-DC component for supply to the next stage. A signal power of a desired signal component of the received signal can also be determined from the DC components. The signal power can be auto-correlated, and normalized auto-correlation results which exceed a threshold can be used to determine a Doppler bandwidth of the received signal, which can be used to adaptively adjust filters used for separating the DC components.
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