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Article: Time-Interleaved Analog-to-Digital Converter (TIADC) Compensation Using Multichannel Filters

TitleTime-Interleaved Analog-to-Digital Converter (TIADC) Compensation Using Multichannel Filters
Authors
Issue Date2009
PublisherIEEE.
Citation
IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2009, v. 56 n. 10, p. 2234-2247 How to Cite?
AbstractPublished methods that employ a filter bank for compensating the timing and bandwidth mismatches of an M-channel time-interleaved analog-to-digital converter (TIADC) were developed based on the fact that each sub-ADC channel is a downsampled version of the analog input. The output of each sub-ADC is filtered in such a way that, when all the filter outputs are summed, the aliasing components are minimized. If each channel of the filter bank has N coefficients, the optimization of the coefficients requires computing the inverse of an MN times MN matrix if the weighted least squares (WLS) technique is used as the optimization tool. In this paper, we present a multichannel filtering approach for TIADC mismatch compensation. We apply the generalized sampling theorem to directly estimate the ideal output of each sub-ADC using the outputs of all the sub-ADCs. If the WLS technique is used as the optimization tool, the dimension of the matrix to be inversed is N times N. For the same number of coefficients (and also the same spurious component performance given sufficient arithmetic precision), our technique is computationally less complex and more robust than the filter-bank approach. If mixed integer linear programming is used as the optimization tool to produce filters with coefficient values that are integer powers of two, our technique produces a saving in computing resources by a factor of approximately (100.2N(M- 1)/(M-1) in the TIADC filter design.
Persistent Identifierhttp://hdl.handle.net/10722/73667
ISSN
2015 Impact Factor: 2.393
2015 SCImago Journal Rankings: 1.394
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLim, YCen_HK
dc.contributor.authorZou, YXen_HK
dc.contributor.authorChan, JWen_HK
dc.contributor.authorChan, SCen_HK
dc.date.accessioned2010-09-06T06:53:36Z-
dc.date.available2010-09-06T06:53:36Z-
dc.date.issued2009en_HK
dc.identifier.citationIEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2009, v. 56 n. 10, p. 2234-2247en_HK
dc.identifier.issn1549-8328-
dc.identifier.urihttp://hdl.handle.net/10722/73667-
dc.description.abstractPublished methods that employ a filter bank for compensating the timing and bandwidth mismatches of an M-channel time-interleaved analog-to-digital converter (TIADC) were developed based on the fact that each sub-ADC channel is a downsampled version of the analog input. The output of each sub-ADC is filtered in such a way that, when all the filter outputs are summed, the aliasing components are minimized. If each channel of the filter bank has N coefficients, the optimization of the coefficients requires computing the inverse of an MN times MN matrix if the weighted least squares (WLS) technique is used as the optimization tool. In this paper, we present a multichannel filtering approach for TIADC mismatch compensation. We apply the generalized sampling theorem to directly estimate the ideal output of each sub-ADC using the outputs of all the sub-ADCs. If the WLS technique is used as the optimization tool, the dimension of the matrix to be inversed is N times N. For the same number of coefficients (and also the same spurious component performance given sufficient arithmetic precision), our technique is computationally less complex and more robust than the filter-bank approach. If mixed integer linear programming is used as the optimization tool to produce filters with coefficient values that are integer powers of two, our technique produces a saving in computing resources by a factor of approximately (100.2N(M- 1)/(M-1) in the TIADC filter design.-
dc.languageengen_HK
dc.publisherIEEE.-
dc.relation.ispartofIEEE Transactions on Circuits and Systems Part 1: Regular Papersen_HK
dc.rightsIEEE Transactions on Circuits and Systems Part 1: Regular Papers. Copyright © IEEE.-
dc.rights©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleTime-Interleaved Analog-to-Digital Converter (TIADC) Compensation Using Multichannel Filtersen_HK
dc.typeArticleen_HK
dc.identifier.emailChan, SC: scchan@eee.hku.hken_HK
dc.identifier.authorityChan, SC=rp00094en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/TCSI.2008.2012216-
dc.identifier.hkuros165829en_HK
dc.identifier.volume56-
dc.identifier.issue10-
dc.identifier.spage2234-
dc.identifier.epage2247-
dc.identifier.isiWOS:000273553400008-
dc.publisher.placeUnited States-

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