{"id":"https://openalex.org/W4385324050","doi":"https://doi.org/10.1109/tsp.2023.3293329","title":"Low-Complexity Channel Estimation for Massive MIMO Systems With Decentralized Baseband Processing","display_name":"Low-Complexity Channel Estimation for Massive MIMO Systems With Decentralized Baseband Processing","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4385324050","doi":"https://doi.org/10.1109/tsp.2023.3293329"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2023.3293329","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2023.3293329","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/A5017524078","display_name":"Yanqing Xu","orcid":"https://orcid.org/0000-0003-4104-5136"},"institutions":[{"id":"https://openalex.org/I4210099586","display_name":"Shenzhen Research Institute of Big Data","ror":"https://ror.org/00z1gwf89","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210099586"]},{"id":"https://openalex.org/I4210116924","display_name":"Chinese University of Hong Kong, Shenzhen","ror":"https://ror.org/02d5ks197","country_code":"CN","type":"education","lineage":["https://openalex.org/I177725633","https://openalex.org/I180726961","https://openalex.org/I4210116924"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yanqing Xu","raw_affiliation_strings":["School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","Shenzhen Research Institute of Big Data, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0003-4104-5136","affiliations":[{"raw_affiliation_string":"School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","institution_ids":["https://openalex.org/I4210116924"]},{"raw_affiliation_string":"Shenzhen Research Institute of Big Data, Shenzhen, China","institution_ids":["https://openalex.org/I4210099586"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024806199","display_name":"Bo Wang","orcid":"https://orcid.org/0000-0002-9381-6679"},"institutions":[{"id":"https://openalex.org/I2250955327","display_name":"Huawei Technologies (China)","ror":"https://ror.org/00cmhce21","country_code":"CN","type":"company","lineage":["https://openalex.org/I2250955327"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bo Wang","raw_affiliation_strings":["Wireless Network RAN Algorithm Department, Xi’an Huawei Technologies Co. Ltd., Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0002-9381-6679","affiliations":[{"raw_affiliation_string":"Wireless Network RAN Algorithm Department, Xi’an Huawei Technologies Co. Ltd., Xi’an, China","institution_ids":["https://openalex.org/I2250955327"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091631370","display_name":"Enbin Song","orcid":"https://orcid.org/0000-0003-2100-5313"},"institutions":[{"id":"https://openalex.org/I24185976","display_name":"Sichuan University","ror":"https://ror.org/011ashp19","country_code":"CN","type":"education","lineage":["https://openalex.org/I24185976"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Enbin Song","raw_affiliation_strings":["College of Mathematics and School of Aeronautics and Astronautics, Sichuan University, Chengdu, Sichuan, China"],"raw_orcid":"https://orcid.org/0000-0003-2100-5313","affiliations":[{"raw_affiliation_string":"College of Mathematics and School of Aeronautics and Astronautics, Sichuan University, Chengdu, Sichuan, China","institution_ids":["https://openalex.org/I24185976"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059252324","display_name":"Qingjiang Shi","orcid":"https://orcid.org/0000-0003-0507-9080"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]},{"id":"https://openalex.org/I4210099586","display_name":"Shenzhen Research Institute of Big Data","ror":"https://ror.org/00z1gwf89","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210099586"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qingjiang Shi","raw_affiliation_strings":["School of Software Engineering, Tongji University, Shanghai, China","Shenzhen Research Institute of Big Data, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0003-0507-9080","affiliations":[{"raw_affiliation_string":"School of Software Engineering, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Shenzhen Research Institute of Big Data, Shenzhen, China","institution_ids":["https://openalex.org/I4210099586"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5064271996","display_name":"Tsung\u2010Hui Chang","orcid":"https://orcid.org/0000-0003-1349-2764"},"institutions":[{"id":"https://openalex.org/I4210099586","display_name":"Shenzhen Research Institute of Big Data","ror":"https://ror.org/00z1gwf89","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210099586"]},{"id":"https://openalex.org/I4210116924","display_name":"Chinese University of Hong Kong, Shenzhen","ror":"https://ror.org/02d5ks197","country_code":"CN","type":"education","lineage":["https://openalex.org/I177725633","https://openalex.org/I180726961","https://openalex.org/I4210116924"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tsung-Hui Chang","raw_affiliation_strings":["School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","Shenzhen Research Institute of Big Data, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0003-1349-2764","affiliations":[{"raw_affiliation_string":"School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","institution_ids":["https://openalex.org/I4210116924"]},{"raw_affiliation_string":"Shenzhen Research Institute of Big Data, Shenzhen, China","institution_ids":["https://openalex.org/I4210099586"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.7542,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.84513113,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"71","issue":null,"first_page":"2728","last_page":"2743"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9998000264167786,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9997000098228455,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/baseband","display_name":"Baseband","score":0.8512234687805176},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6584323048591614},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6358944177627563},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5016069412231445},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.48988956212997437},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.30470743775367737},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.2246745228767395}],"concepts":[{"id":"https://openalex.org/C65165936","wikidata":"https://www.wikidata.org/wiki/Q575784","display_name":"Baseband","level":3,"score":0.8512234687805176},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6584323048591614},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6358944177627563},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5016069412231445},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.48988956212997437},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.30470743775367737},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.2246745228767395},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tsp.2023.3293329","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2023.3293329","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":[{"id":"https://openalex.org/G2388921650","display_name":null,"funder_award_id":"2022SB0004","funder_id":"https://openalex.org/F4320337111","funder_display_name":"Basic and Applied Basic Research Foundation of Guangdong Province"},{"id":"https://openalex.org/G3990962312","display_name":null,"funder_award_id":"62231019","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4415435663","display_name":"\u6570\u636e\u4e0e\u6a21\u578b\u53cc\u9a71\u52a8\u7684\u5927\u89c4\u6a21MIMO\u9ad8\u901f\u4f20\u8f93\u5173\u952e\u6280\u672f\u7814\u7a76","funder_award_id":"62071409","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4951560784","display_name":null,"funder_award_id":"62201486","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6971653905","display_name":null,"funder_award_id":"2020SCUNG205","funder_id":"https://openalex.org/F4320322990","funder_display_name":"Sichuan University"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320322990","display_name":"Sichuan University","ror":"https://ror.org/011ashp19"},{"id":"https://openalex.org/F4320337111","display_name":"Basic and Applied Basic Research Foundation of Guangdong Province","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":37,"referenced_works":["https://openalex.org/W1938636034","https://openalex.org/W1996215314","https://openalex.org/W2023535408","https://openalex.org/W2061134945","https://openalex.org/W2092734317","https://openalex.org/W2094655360","https://openalex.org/W2113157322","https://openalex.org/W2130467968","https://openalex.org/W2141682101","https://openalex.org/W2145486800","https://openalex.org/W2170881451","https://openalex.org/W2526144952","https://openalex.org/W2746047470","https://openalex.org/W2782637457","https://openalex.org/W2784187484","https://openalex.org/W2798760276","https://openalex.org/W2896823922","https://openalex.org/W2897059627","https://openalex.org/W2910522649","https://openalex.org/W2952909243","https://openalex.org/W2959659198","https://openalex.org/W2963278460","https://openalex.org/W2963290764","https://openalex.org/W2963845287","https://openalex.org/W2964241387","https://openalex.org/W2999528193","https://openalex.org/W3013324099","https://openalex.org/W3031954909","https://openalex.org/W3164527586","https://openalex.org/W3172584336","https://openalex.org/W3183400766","https://openalex.org/W3202807108","https://openalex.org/W3206709442","https://openalex.org/W4214947556","https://openalex.org/W4299343893","https://openalex.org/W4300812052","https://openalex.org/W4375868860"],"related_works":["https://openalex.org/W2204547643","https://openalex.org/W1497578837","https://openalex.org/W4294892273","https://openalex.org/W4293208944","https://openalex.org/W2355697382","https://openalex.org/W2157434987","https://openalex.org/W2622425222","https://openalex.org/W2546635662","https://openalex.org/W2132134555","https://openalex.org/W2782618803"],"abstract_inverted_index":{"The":[0,91],"traditional":[1],"centralized":[2,106],"baseband":[3,40,63],"processing":[4,41],"architecture":[5,43],"is":[6,30,58,85,93],"faced":[7],"with":[8,34,109],"the":[9,21,26,38,48,73,89,105,118,134,138,144,155,173,176],"bottlenecks":[10],"of":[11,23,175,183],"high":[12],"computation":[13,190],"complexity":[14],"and":[15,56,137,189],"excessive":[16],"fronthaul":[17],"communication,":[18],"especially":[19],"when":[20],"number":[22],"antennas":[24,50],"at":[25],"base":[27],"station":[28],"(BS)":[29],"large.":[31],"To":[32],"cope":[33],"these":[35],"two":[36,129],"challenges,":[37],"decentralized":[39],"(DBP)":[42],"has":[44],"been":[45],"proposed,":[46],"where":[47],"BS":[49],"are":[51,70,169],"partitioned":[52],"into":[53],"multiple":[54],"clusters":[55],"each":[57],"connected":[59],"to":[60,94,143,171],"a":[61,110],"local":[62],"unit":[64],"(BBU).":[65],"In":[66,141],"this":[67],"paper,":[68],"we":[69,127],"interested":[71],"in":[72,88,181],"low-complexity":[74,119],"distributed":[75,96,130,146,178],"channel":[76,125],"estimation":[77,184],"(CE)":[78],"method":[79],"under":[80],"such":[81],"DBP":[82],"architecture,":[83],"which":[84,149],"rarely":[86],"studied":[87],"literature.":[90],"aim":[92],"devise":[95],"CE":[97,131,147,179],"algorithms":[98,158,180],"that":[99],"can":[100],"perform":[101],"as":[102,104],"well":[103],"scheme":[107],"but":[108],"small":[111],"inter-BBU":[112,186],"communication":[113,163,187],"cost.":[114],"Specifically,":[115],"based":[116],"on":[117],"diagonal":[120],"minimum":[121],"mean":[122],"square":[123],"error":[124],"estimator,":[126],"propose":[128],"algorithms,":[132],"namely":[133],"aggregate-then-estimate":[135],"algorithm":[136,148],"estimate-then-aggregate":[139],"algorithm.":[140],"contrast":[142],"existing":[145],"requires":[150],"iterative":[151],"information":[152],"exchanges":[153],"among":[154,164],"nodes,":[156],"our":[157],"only":[159],"require":[160],"one":[161],"roundtrip":[162],"BBUs.":[165],"Extensive":[166],"experiment":[167],"results":[168],"presented":[170],"demonstrate":[172],"advantages":[174],"proposed":[177],"terms":[182],"accuracy,":[185],"cost":[188],"complexity.":[191]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":12},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":2}],"updated_date":"2026-07-26T07:53:14.480251","created_date":"2025-10-10T00:00:00"}