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Blind Estimation of Timing Errors in Interleaved AD Converters
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Ericsson Microelectronics AB, Sweden.
2000 (English)Report (Other academic)
Abstract [en]

Parallel AD converter structures is one way to increase the sampling rate. Instead of increasing the sample rate in one AD converter, several AD converters with lower sampling rate can be used instead. A problem in these structures is that the time between samples is usually not equal because there are errors in the delays between the AD converters. We will here present a method to estimate the timing offset errors. The estimation algorithm works without any special calibration signal, instead the normal input signal is used. The only assumption that we need on the input signal is that most of the energy is concentrated to a low pass band, below about 1/3 of the Nyquist frequency. Simulations of the time interleaved AD converter show that the method estimates the errors with high accuracy. 

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2000. , 6 p.
LiTH-ISY-R, ISSN 1400-3902 ; 2315
Keyword [en]
Sampling, AD conversion, Blind estimation, Interleaving
National Category
Control Engineering
URN: urn:nbn:se:liu:diva-55763ISRN: LiTH-ISY-R-2315OAI: diva2:316569
Available from: 2010-04-30 Created: 2010-04-30 Last updated: 2014-07-29Bibliographically approved

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Elbornsson, Jonas
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Automatic ControlThe Institute of Technology
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