Blind Estimation of Timing and Amplitude Offsets in Parallel A/D Converters
2000 (English)Report (Other academic)
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. There are also differences in the ground level in the different AD converters. We will here present a method to estimate the timing and amplitude offsets. The estimation algorithm works without any calibration signal, instead the usual input signal is used. The only assumption that is made about the signal is that most of the energy lies in a low frequency band. The AD converter structure will also be simulated to show that the method works.
Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2000. , 12 p.
LiTH-ISY-R, ISSN 1400-3902 ; 2314
Non-uniform sampling, AD conversion, Interleaved, Blind estimation
National CategoryControl Engineering
IdentifiersURN: urn:nbn:se:liu:diva-55762ISRN: LiTH-ISY-R-2314OAI: oai:DiVA.org:liu-55762DiVA: diva2:316568