Digital spectra of nonuniformly sampled signals: a robust samplingtime offset estimation algorithm for ultra high-speed waveformdigitizers using interleaving |
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Authors: | Jenq Y-C |
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Affiliation: | Tektronix Inc., Beaverton, OR; |
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Abstract: | The author presents an algorithm for estimating the sampling time offsets encountered at the parallel sampling paths of an ultra-high-speed waveform digitizing system which is realized by interleaving many sample-hold and A/D (analog/digital) converter modules. One obvious application of this algorithm is to feed these estimates back to adjustable delay units in all the sampling paths to compensate the sampling-time offsets. Simulation results indicate that with an 8-bit quantizer the residual timing error can be reduced to just about 0.05% of the sampling period |
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