Title :
Digital spectra of nonuniformly sampled signals: a robust sampling time offset estimation algorithm for ultra high-speed waveform digitizers using interleaving
Author_Institution :
Tektronix Inc., Beaverton, OR, USA
fDate :
2/1/1990 12:00:00 AM
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
Keywords :
analogue-digital conversion; computerised signal processing; digital simulation; electronic engineering computing; sample and hold circuits; spectral analysis; wave analysers; A/D converter; digital spectra; estimation algorithm; interleaving; nonuniformly sampled signals; parallel sampling paths; residual timing error; sample-hold; sampling time offset; simulation program; ultra high-speed waveform digitizers; Algorithm design and analysis; Calibration; Clocks; Delay estimation; Frequency; Interleaved codes; Robustness; Sampling methods; Signal analysis; Time series analysis;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
