Process and apparatus for correction of a resampler
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United States of America Patent
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Aug 16, 2005
Grant Date -
Mar 21, 2002
app pub date -
Jul 27, 2001
filing date -
Jul 27, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for correction of a resampler is provided, with which a sampled input signal, that is subjected to an input sampling rate and which has a chip frequency that differs from the input sampling rate, is converted into a sampled output signal for which the sampling rate corresponds with the chip frequency, by changing the input sampling rate by a resampling factor. The input signal is subjected to a non-linear operation so that a spectral line is produced at the chip frequency. A frequency shifter spectrally shifts the input signal by the chip frequency. The phase of the shifted spectral line at the chip frequency is determined as a function of sampling time points. On the basis of a regression of the phase of the shifted spectral line at the chip frequency, the resampling factor is corrected and/or the output signal is time-wise shifted by a time correction value.
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