{"id":"https://openalex.org/W2106804371","doi":"https://doi.org/10.1109/tsp.2009.2016245","title":"Adaptive Conjugate Gradient DFEs for Wideband MIMO Systems","display_name":"Adaptive Conjugate Gradient DFEs for Wideband MIMO Systems","publication_year":2009,"publication_date":"2009-02-26","ids":{"openalex":"https://openalex.org/W2106804371","doi":"https://doi.org/10.1109/tsp.2009.2016245","mag":"2106804371"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2009.2016245","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2009.2016245","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Signal Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086877328","display_name":"Aris S. Lalos","orcid":"https://orcid.org/0000-0003-0511-9302"},"institutions":[{"id":"https://openalex.org/I120729142","display_name":"Computer Technology Institute and Press \u201cDIOPHANTUS\u201d","ror":"https://ror.org/021nszj63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I120729142","https://openalex.org/I4210154149"]},{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"A.S. Lalos","raw_affiliation_strings":["Department of Computer Engineering and Informatics and RACTI/RU8, University of Patras, Rio-Patras, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering and Informatics and RACTI/RU8, University of Patras, Rio-Patras, Greece","institution_ids":["https://openalex.org/I174878644","https://openalex.org/I120729142"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085212636","display_name":"Vassilis Kekatos","orcid":"https://orcid.org/0000-0003-1127-3285"},"institutions":[{"id":"https://openalex.org/I130238516","display_name":"University of Minnesota","ror":"https://ror.org/017zqws13","country_code":"US","type":"education","lineage":["https://openalex.org/I130238516"]},{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR","US"],"is_corresponding":false,"raw_author_name":"V. Kekatos","raw_affiliation_strings":["Department of Computer Engineering and Informatics, University of Patras, Greece","Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering and Informatics, University of Patras, Greece","institution_ids":["https://openalex.org/I174878644"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, USA","institution_ids":["https://openalex.org/I130238516"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5009101477","display_name":"Kostas Berberidis","orcid":"https://orcid.org/0000-0003-2175-9043"},"institutions":[{"id":"https://openalex.org/I120729142","display_name":"Computer Technology Institute and Press \u201cDIOPHANTUS\u201d","ror":"https://ror.org/021nszj63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I120729142","https://openalex.org/I4210154149"]},{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"K. Berberidis","raw_affiliation_strings":["Department of Computer Engineering and Informatics and RACTI/RU8, University of Patras, Rio-Patras, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Engineering and Informatics and RACTI/RU8, University of Patras, Rio-Patras, Greece","institution_ids":["https://openalex.org/I174878644","https://openalex.org/I120729142"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.0413,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.78720202,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"57","issue":"6","first_page":"2406","last_page":"2412"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7838887572288513},{"id":"https://openalex.org/keywords/conjugate-gradient-method","display_name":"Conjugate gradient method","score":0.6600003242492676},{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.6115090847015381},{"id":"https://openalex.org/keywords/adaptive-equalizer","display_name":"Adaptive equalizer","score":0.5993949174880981},{"id":"https://openalex.org/keywords/convergence","display_name":"Convergence (economics)","score":0.5499916076660156},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.5168171525001526},{"id":"https://openalex.org/keywords/equalization","display_name":"Equalization (audio)","score":0.5095375180244446},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4995918273925781},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.4824565052986145},{"id":"https://openalex.org/keywords/recursive-least-squares-filter","display_name":"Recursive least squares filter","score":0.43794581294059753},{"id":"https://openalex.org/keywords/equalizer","display_name":"Equalizer","score":0.4264652729034424},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4230313003063202},{"id":"https://openalex.org/keywords/adaptive-filter","display_name":"Adaptive filter","score":0.38456156849861145},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.37499141693115234},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.341202974319458},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.27359867095947266},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.18745362758636475},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1335844099521637},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.1321505606174469},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.08710196614265442},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.08495736122131348}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7838887572288513},{"id":"https://openalex.org/C81184566","wikidata":"https://www.wikidata.org/wiki/Q1191895","display_name":"Conjugate gradient method","level":2,"score":0.6600003242492676},{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.6115090847015381},{"id":"https://openalex.org/C25125847","wikidata":"https://www.wikidata.org/wiki/Q4680741","display_name":"Adaptive equalizer","level":4,"score":0.5993949174880981},{"id":"https://openalex.org/C2777303404","wikidata":"https://www.wikidata.org/wiki/Q759757","display_name":"Convergence (economics)","level":2,"score":0.5499916076660156},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.5168171525001526},{"id":"https://openalex.org/C75755367","wikidata":"https://www.wikidata.org/wiki/Q104531076","display_name":"Equalization (audio)","level":3,"score":0.5095375180244446},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4995918273925781},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.4824565052986145},{"id":"https://openalex.org/C145249878","wikidata":"https://www.wikidata.org/wiki/Q2835868","display_name":"Recursive least squares filter","level":3,"score":0.43794581294059753},{"id":"https://openalex.org/C67545415","wikidata":"https://www.wikidata.org/wiki/Q5384218","display_name":"Equalizer","level":3,"score":0.4264652729034424},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4230313003063202},{"id":"https://openalex.org/C102248274","wikidata":"https://www.wikidata.org/wiki/Q168388","display_name":"Adaptive filter","level":2,"score":0.38456156849861145},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.37499141693115234},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.341202974319458},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.27359867095947266},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.18745362758636475},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1335844099521637},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.1321505606174469},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08710196614265442},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.08495736122131348},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C50522688","wikidata":"https://www.wikidata.org/wiki/Q189833","display_name":"Economic growth","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tsp.2009.2016245","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2009.2016245","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Signal Processing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1547069917","https://openalex.org/W1966828968","https://openalex.org/W2017242013","https://openalex.org/W2067599431","https://openalex.org/W2069496135","https://openalex.org/W2073318058","https://openalex.org/W2075194837","https://openalex.org/W2077658674","https://openalex.org/W2097212255","https://openalex.org/W2119207405","https://openalex.org/W2130192231","https://openalex.org/W2130210518","https://openalex.org/W2130410536","https://openalex.org/W2146023156","https://openalex.org/W2151374582","https://openalex.org/W2162608132","https://openalex.org/W2165987134","https://openalex.org/W2167619382","https://openalex.org/W2170099275","https://openalex.org/W2502655619","https://openalex.org/W2610805269","https://openalex.org/W4243330440"],"related_works":["https://openalex.org/W2979019709","https://openalex.org/W2352178434","https://openalex.org/W2018366688","https://openalex.org/W1984561329","https://openalex.org/W2351868092","https://openalex.org/W2168755097","https://openalex.org/W2372385147","https://openalex.org/W1804663541","https://openalex.org/W2352105133","https://openalex.org/W2950272089"],"abstract_inverted_index":{"New":[0],"adaptive":[1,44],"equalization":[2],"algorithms":[3],"for":[4],"wireless":[5],"systems":[6],"operating":[7],"over":[8],"wideband":[9],"multiple-input":[10],"multiple-output":[11],"(MIMO)":[12],"channels":[13],"are":[14,87],"proposed.":[15],"The":[16],"problem":[17],"of":[18,30,79],"MIMO":[19],"decision":[20],"feedback":[21],"equalizer":[22,52,81],"(DFE)":[23],"design":[24],"is":[25],"formulated":[26],"as":[27,63],"a":[28],"set":[29],"linear":[31],"equations":[32],"with":[33,53],"multiple":[34],"right-hand":[35],"sides":[36],"(RHSs)":[37],"evolving":[38],"in":[39],"time.":[40],"By":[41],"applying":[42],"an":[43,51],"modified":[45],"conjugate":[46],"gradient":[47],"algorithm,":[48],"we":[49],"derive":[50],"identical":[54],"convergence,":[55],"improved":[56],"tracking":[57],"capabilities,":[58],"but":[59],"higher":[60],"computational":[61],"load":[62],"compared":[64],"to":[65],"the":[66,80],"Recursive":[67],"Least":[68],"Squares":[69],"(RLS)":[70],"algorithm.":[71],"To":[72],"reduce":[73],"its":[74],"complexity,":[75],"two":[76],"updating":[77],"strategies":[78],"filters":[82],"based":[83],"on":[84],"Galerkin":[85],"projections":[86],"employed.":[88]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2013,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
