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Article: TimeInterleaved AnalogtoDigital Converter (TIADC) Compensation Using Multichannel Filters
Title  TimeInterleaved AnalogtoDigital Converter (TIADC) Compensation Using Multichannel Filters 

Authors  
Issue Date  2009 
Publisher  IEEE. 
Citation  IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2009, v. 56 n. 10, p. 22342247 How to Cite? 
Abstract  Published methods that employ a filter bank for compensating the timing and bandwidth mismatches of an Mchannel timeinterleaved analogtodigital converter (TIADC) were developed based on the fact that each subADC channel is a downsampled version of the analog input. The output of each subADC 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 subADC using the outputs of all the subADCs. 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 filterbank 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)/(M1) in the TIADC filter design. 
Persistent Identifier  http://hdl.handle.net/10722/73667 
ISSN  2015 Impact Factor: 2.393 2015 SCImago Journal Rankings: 1.394 
ISI Accession Number ID 
DC Field  Value  Language 

dc.contributor.author  Lim, YC  en_HK 
dc.contributor.author  Zou, YX  en_HK 
dc.contributor.author  Chan, JW  en_HK 
dc.contributor.author  Chan, SC  en_HK 
dc.date.accessioned  20100906T06:53:36Z   
dc.date.available  20100906T06:53:36Z   
dc.date.issued  2009  en_HK 
dc.identifier.citation  IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2009, v. 56 n. 10, p. 22342247  en_HK 
dc.identifier.issn  15498328   
dc.identifier.uri  http://hdl.handle.net/10722/73667   
dc.description.abstract  Published methods that employ a filter bank for compensating the timing and bandwidth mismatches of an Mchannel timeinterleaved analogtodigital converter (TIADC) were developed based on the fact that each subADC channel is a downsampled version of the analog input. The output of each subADC 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 subADC using the outputs of all the subADCs. 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 filterbank 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)/(M1) in the TIADC filter design.   
dc.language  eng  en_HK 
dc.publisher  IEEE.   
dc.relation.ispartof  IEEE Transactions on Circuits and Systems Part 1: Regular Papers  en_HK 
dc.rights  IEEE 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.rights  Creative Commons: Attribution 3.0 Hong Kong License   
dc.title  TimeInterleaved AnalogtoDigital Converter (TIADC) Compensation Using Multichannel Filters  en_HK 
dc.type  Article  en_HK 
dc.identifier.email  Chan, SC: scchan@eee.hku.hk  en_HK 
dc.identifier.authority  Chan, SC=rp00094  en_HK 
dc.description.nature  published_or_final_version   
dc.identifier.doi  10.1109/TCSI.2008.2012216   
dc.identifier.hkuros  165829  en_HK 
dc.identifier.volume  56   
dc.identifier.issue  10   
dc.identifier.spage  2234   
dc.identifier.epage  2247   
dc.identifier.isi  WOS:000273553400008   
dc.publisher.place  United States   