Adaptively calibrating analog-to-digital conversion with correction table indexing
2000 (English)Patent (Other (popular science, discussion, etc.))
Methods, systems, and arrangements enable true wide-band calibration of analog-to-digital conversion (ADC) using correction table indexing (350, 660). The frequency of an analog input signal that corresponds to a digital output sample is accounted for, at least partially, when accessing a correction table (350, 660) during the creation and use thereof. For example, in addition to at least a portion of a current sample, at least portion(s) of previous and/or subsequent samples may be used to build (805) (e.g., by bit concatenation) an index for addressing a correction table memory. In effect, compensation may be achieved for ADC errors that are frequency dependent. This correction table (350; 660) indexing may advantageously be employed along with a scheme that estimates (1020A) one or more parameters of the analog input signal in the digital domain on a sample-by-sample basis in order to reconstruct the analog input signal in the digital domain.
Place, publisher, year, edition, pages
EP: EP-A- 0 550 187; US-A- 6 127 955 , 2000. Vol. 01270957.2, no EP 1342323 B1
IdentifiersURN: urn:nbn:se:kth:diva-83548OAI: oai:DiVA.org:kth-83548DiVA: diva2:498832
US 6690311-B2 (2004-02-10)
EP 1342323-B1 (2006-03-22)2012-02-122012-02-122013-08-07Bibliographically approved