Equalization of Time Errors in Time Interleaved ADC System - Part I: Theory
2003 (English)Report (Other academic)
To significantly increase the sampling rate of an A/D converter (ADC), a time interleaved ADC system is a good option. The drawback of a time interleaved ADC system is that the ADCs are not exactly identical dueto errors in the manufacturing process. This means that time, gain and offset mismatch errors are introduced in the ADC system. These errors cause distortion in the sampled signal. In this paper we present a method for estimation and compensation of the time mismatch errors. The estimation method requires no knowledge about the input signal except that it should be band limited to the Nyquist frequency for the complete ADC system. This means that the errors can be estimated whilethe ADC is running. The method is also adaptive to slow changes in the time errors.
Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2003.
LiTH-ISY-R, ISSN 1400-3902 ; 2494
A/D conversion, Nonuniform sampling, Equalization, Estimation
IdentifiersURN: urn:nbn:se:liu:diva-55911OAI: oai:DiVA.org:liu-55911DiVA: diva2:316620