Title :
Digital spectra of non-uniformly sampled signals: theories and applications. III. A robust sampling time offset estimation algorithm for ultra high speed waveform digitizers using interleaving
Author_Institution :
Tektronix Inc., Beaverton, OR, USA
Abstract :
For pt.II see IEEE Transactions on Instrumentation and Measurement, vol.37, no.3 (Sept. 1988). The author presents an algorithm for estimating the sampling time offsets of the parallel sampling paths of an ultra-high-speed waveform digitizing system that is realized by interleaving many sample-and-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 instrumentation; computerised signal processing; digital simulation; sample and hold circuits; spectral analysers; waveform analysis; A/D; computerised signal processing; digital spectra; interleaving; nonuniformly sampled signals; residual timing error; sample-and-hold; sampling time offset estimation algorithm; ultra high speed waveform digitizers; Clocks; Converters; Frequency; Interleaved codes; Nonuniform sampling; Real time systems; Robustness; Sampling methods; Signal analysis; Solid state circuits;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1989. IMTC-89. Conference Record., 6th IEEE
Conference_Location :
Washington, DC
DOI :
10.1109/IMTC.1989.36855
