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

Jenq, Y.C.

Author_Institution

Tektronix Inc., Beaverton, OR, USA

fYear

1989

fDate

25-27 Apr 1989

Firstpage

208

Lastpage

212

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1989. IMTC-89. Conference Record., 6th IEEE

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/IMTC.1989.36855

Filename

36855