{"id":"https://openalex.org/W4409883140","doi":"https://doi.org/10.1109/tcomm.2025.3564724","title":"Channel Estimation for XL-MIMO Systems With Decentralized Baseband Processing: Integrating Local Reconstruction With Global Refinement","display_name":"Channel Estimation for XL-MIMO Systems With Decentralized Baseband Processing: Integrating Local Reconstruction With Global Refinement","publication_year":2025,"publication_date":"2025-04-28","ids":{"openalex":"https://openalex.org/W4409883140","doi":"https://doi.org/10.1109/tcomm.2025.3564724"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2025.3564724","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3564724","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications","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/A5026527212","display_name":"Anzheng Tang","orcid":"https://orcid.org/0009-0000-1947-0828"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Anzheng Tang","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100372762","display_name":"Jun-Bo Wang","orcid":"https://orcid.org/0000-0002-1881-3558"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jun-Bo Wang","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051720258","display_name":"Yijin Pan","orcid":"https://orcid.org/0000-0002-9619-2814"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yijin Pan","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018922388","display_name":"Cheng Zeng","orcid":"https://orcid.org/0000-0002-6089-8372"},"institutions":[{"id":"https://openalex.org/I36399199","display_name":"Nanjing University of Science and Technology","ror":"https://ror.org/00xp9wg62","country_code":"CN","type":"education","lineage":["https://openalex.org/I36399199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Cheng Zeng","raw_affiliation_strings":["School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China","School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, China","institution_ids":["https://openalex.org/I36399199"]},{"raw_affiliation_string":"School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing","institution_ids":["https://openalex.org/I36399199"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048325392","display_name":"Yijian Chen","orcid":"https://orcid.org/0000-0002-3567-1854"},"institutions":[{"id":"https://openalex.org/I4210098582","display_name":"ZTE (China)","ror":"https://ror.org/00rjhhq63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210098582"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yijian Chen","raw_affiliation_strings":["Wireless Product Research and Development Institute, ZTE Corporation, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"Wireless Product Research and Development Institute, ZTE Corporation, Shenzhen, China","institution_ids":["https://openalex.org/I4210098582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5032367275","display_name":"Hongkang Yu","orcid":"https://orcid.org/0000-0003-3760-2569"},"institutions":[{"id":"https://openalex.org/I4210098582","display_name":"ZTE (China)","ror":"https://ror.org/00rjhhq63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210098582"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hongkang Yu","raw_affiliation_strings":["Wireless Product Research and Development Institute, ZTE Corporation, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"Wireless Product Research and Development Institute, ZTE Corporation, Shenzhen, China","institution_ids":["https://openalex.org/I4210098582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037292846","display_name":"Ming Xiao","orcid":"https://orcid.org/0000-0002-5407-0835"},"institutions":[{"id":"https://openalex.org/I86987016","display_name":"KTH Royal Institute of Technology","ror":"https://ror.org/026vcq606","country_code":"SE","type":"education","lineage":["https://openalex.org/I86987016"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Ming Xiao","raw_affiliation_strings":["Department of Information Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden"],"affiliations":[{"raw_affiliation_string":"Department of Information Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden","institution_ids":["https://openalex.org/I86987016"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049028312","display_name":"Rodrigo C. de Lamare","orcid":"https://orcid.org/0000-0003-2322-6451"},"institutions":[{"id":"https://openalex.org/I2699952","display_name":"Pontif\u00edcia Universidade Cat\u00f3lica do Rio de Janeiro","ror":"https://ror.org/01dg47b60","country_code":"BR","type":"education","lineage":["https://openalex.org/I2699952"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Rodrigo C. de Lamare","raw_affiliation_strings":["Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil"],"affiliations":[{"raw_affiliation_string":"Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil","institution_ids":["https://openalex.org/I2699952"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5029002143","display_name":"Jiangzhou Wang","orcid":"https://orcid.org/0000-0003-0881-3594"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiangzhou Wang","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":9,"corresponding_author_ids":["https://openalex.org/A5026527212"],"corresponding_institution_ids":["https://openalex.org/I76569877"],"apc_list":null,"apc_paid":null,"fwci":2.7893,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.90213559,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":98},"biblio":{"volume":"73","issue":"10","first_page":"9421","last_page":"9436"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9986000061035156,"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"}},"topics":[{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9986000061035156,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9980000257492065,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9872000217437744,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/baseband","display_name":"Baseband","score":0.8905805349349976},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6708552837371826},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5259666442871094},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5166571140289307},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4882936477661133},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.484764039516449},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3087421655654907},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2461443841457367},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.19820719957351685},{"id":"https://openalex.org/keywords/digital-signal-processing","display_name":"Digital signal processing","score":0.1595076620578766}],"concepts":[{"id":"https://openalex.org/C65165936","wikidata":"https://www.wikidata.org/wiki/Q575784","display_name":"Baseband","level":3,"score":0.8905805349349976},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6708552837371826},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5259666442871094},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5166571140289307},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4882936477661133},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.484764039516449},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3087421655654907},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2461443841457367},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.19820719957351685},{"id":"https://openalex.org/C84462506","wikidata":"https://www.wikidata.org/wiki/Q173142","display_name":"Digital signal processing","level":2,"score":0.1595076620578766}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2025.3564724","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3564724","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G438436633","display_name":null,"funder_award_id":"62331024","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5298968265","display_name":null,"funder_award_id":"62350710796","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6502524558","display_name":null,"funder_award_id":"62371123","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W2071282831","https://openalex.org/W2339667469","https://openalex.org/W2798760276","https://openalex.org/W2892088820","https://openalex.org/W2910522649","https://openalex.org/W2963278460","https://openalex.org/W2963845287","https://openalex.org/W2964241387","https://openalex.org/W2999528193","https://openalex.org/W3014359050","https://openalex.org/W3172584336","https://openalex.org/W3203882385","https://openalex.org/W3203940756","https://openalex.org/W3208187232","https://openalex.org/W4214947556","https://openalex.org/W4226168441","https://openalex.org/W4226370247","https://openalex.org/W4285742293","https://openalex.org/W4299343893","https://openalex.org/W4312848937","https://openalex.org/W4381785979","https://openalex.org/W4383220029","https://openalex.org/W4385324050","https://openalex.org/W4386634572","https://openalex.org/W4386918717","https://openalex.org/W4387351239","https://openalex.org/W4387414991","https://openalex.org/W4387490268","https://openalex.org/W4387546397","https://openalex.org/W4387587696","https://openalex.org/W4390204381","https://openalex.org/W4390496060","https://openalex.org/W4396534969","https://openalex.org/W4399666068","https://openalex.org/W4400877881","https://openalex.org/W4403674584","https://openalex.org/W4404307250","https://openalex.org/W4405178888","https://openalex.org/W4414348263"],"related_works":["https://openalex.org/W2287588827","https://openalex.org/W2045547432","https://openalex.org/W2358845558","https://openalex.org/W2151788290","https://openalex.org/W2017735754","https://openalex.org/W1993033044","https://openalex.org/W2004095229","https://openalex.org/W2361003288","https://openalex.org/W2119955540","https://openalex.org/W3091674375"],"abstract_inverted_index":{"In":[0,125],"this":[1],"paper,":[2],"we":[3,55,103,172],"investigate":[4],"the":[5,75,80,85,88,126,129,133,148,155,158,190,193,196,199,206,211],"channel":[6,38,60,119,159],"estimation":[7,39,61,123,220],"problem":[8],"for":[9,145],"extremely":[10],"large-scale":[11],"multiple-input":[12],"multiple-output":[13],"(XL-MIMO)":[14],"systems":[15],"with":[16,29,68],"a":[17,23,30,57,95,105,141,164,174,181],"hybrid":[18],"analog-digital":[19],"architecture,":[20],"implemented":[21],"within":[22],"decentralized":[24,37],"baseband":[25],"processing":[26,135,150],"(DBP)":[27],"framework":[28],"star":[31],"topology.":[32],"Existing":[33],"centralized":[34],"and":[35,71,192,208,222],"fully":[36],"methods":[40],"face":[41],"limitations":[42],"due":[43],"to":[44],"excessive":[45],"computational":[46,224],"complexity":[47],"or":[48],"degraded":[49],"performance.":[50],"To":[51,100,168],"overcome":[52],"these":[53],"challenges,":[54],"propose":[56],"novel":[58],"two-stage":[59],"scheme":[62],"that":[63,179],"integrates":[64],"local":[65,89,130,134],"sparse":[66,96,109,185],"reconstruction":[67,90],"global":[69,142,200],"fusion":[70,146],"refinement.":[72],"Specifically,":[73],"in":[74,84,198],"first":[76],"stage,":[77,128],"by":[78],"exploiting":[79],"sparsity":[81,191],"of":[82,195,210],"channels":[83,197],"angular-delay":[86,201],"domain,":[87],"task":[91],"is":[92,161],"formulated":[93],"as":[94,163],"signal":[97],"recovery":[98],"problem.":[99,167],"solve":[101,170],"it,":[102,171],"develop":[104],"graph":[106],"neural":[107],"networks-enhanced":[108],"Bayesian":[110,165],"learning":[111],"(SBL-GNNs)":[112],"algorithm,":[113],"which":[114],"effectively":[115,187],"captures":[116],"dependencies":[117],"among":[118],"coefficients,":[120],"significantly":[121],"improving":[122],"accuracy.":[124],"second":[127],"estimates":[131],"from":[132],"units":[136],"(LPUs)":[137],"are":[138],"aligned":[139],"into":[140],"angular":[143],"domain":[144],"at":[147],"central":[149],"unit":[151],"(CPU).":[152],"Based":[153],"on":[154],"aggregated":[156],"observations,":[157],"refinement":[160],"modeled":[162],"denoising":[166],"efficiently":[169],"devise":[173],"variational":[175],"message":[176],"passing":[177],"algorithm":[178,214],"incorporates":[180],"Markov":[182],"chain-based":[183],"hierarchical":[184],"prior,":[186],"leveraging":[188],"both":[189],"correlations":[194],"domain.":[202],"Simulation":[203],"results":[204],"show":[205],"effectiveness":[207],"superiority":[209],"proposed":[212],"SBL-GNNs":[213],"over":[215],"existing":[216],"methods,":[217],"demonstrating":[218],"improved":[219],"performance":[221],"reduced":[223],"complexity.":[225]},"counts_by_year":[{"year":2025,"cited_by_count":4}],"updated_date":"2026-04-09T08:11:56.329763","created_date":"2025-10-10T00:00:00"}
