{"id":"https://openalex.org/W4414221819","doi":"https://doi.org/10.1109/tsp.2025.3607997","title":"Downlink-Uplink Collaborative Channel Estimation for TDD Massive MIMO Communications","display_name":"Downlink-Uplink Collaborative Channel Estimation for TDD Massive MIMO Communications","publication_year":2025,"publication_date":"2025-01-01","ids":{"openalex":"https://openalex.org/W4414221819","doi":"https://doi.org/10.1109/tsp.2025.3607997"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2025.3607997","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2025.3607997","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/A5091584266","display_name":"Yonghui Chu","orcid":"https://orcid.org/0000-0001-7481-4750"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Yonghui Chu","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China"],"affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]},{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101756347","display_name":"Wenlong Wang","orcid":"https://orcid.org/0009-0001-5855-8723"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenlong Wang","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China"],"affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]},{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Shixuan Liu","orcid":"https://orcid.org/0009-0005-8104-827X"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shixuan Liu","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China"],"affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]},{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Zhiqiang Wei","orcid":"https://orcid.org/0000-0003-3400-5590"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiqiang Wei","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China"],"affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]},{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5082539585","display_name":"Zai Yang","orcid":"https://orcid.org/0000-0002-9502-5176"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zai Yang","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China"],"affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]},{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, Shaanxi, China","institution_ids":["https://openalex.org/I87445476"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5091584266"],"corresponding_institution_ids":["https://openalex.org/I87445476"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.2355368,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"73","issue":null,"first_page":"3614","last_page":"3628"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9988999962806702,"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":0.9988999962806702,"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/T13905","display_name":"Telecommunications and Broadcasting Technologies","score":0.9855999946594238,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9847999811172485,"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/telecommunications-link","display_name":"Telecommunications link","score":0.7387999892234802},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6615999937057495},{"id":"https://openalex.org/keywords/channel-sounding","display_name":"Channel sounding","score":0.5849000215530396},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5414000153541565},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.44929999113082886},{"id":"https://openalex.org/keywords/minification","display_name":"Minification","score":0.44909998774528503},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.4223000109195709},{"id":"https://openalex.org/keywords/exploit","display_name":"Exploit","score":0.38659998774528503}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7387999892234802},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7290999889373779},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6615999937057495},{"id":"https://openalex.org/C2781127089","wikidata":"https://www.wikidata.org/wiki/Q25051821","display_name":"Channel sounding","level":4,"score":0.5849000215530396},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5414000153541565},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.453000009059906},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.44929999113082886},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.44909998774528503},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.4223000109195709},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.38659998774528503},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.3643999993801117},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.35929998755455017},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.35580000281333923},{"id":"https://openalex.org/C191795146","wikidata":"https://www.wikidata.org/wiki/Q3878446","display_name":"Norm (philosophy)","level":2,"score":0.3425000011920929},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.32829999923706055},{"id":"https://openalex.org/C99611785","wikidata":"https://www.wikidata.org/wiki/Q6453233","display_name":"Duplex (building)","level":3,"score":0.32030001282691956},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.30889999866485596},{"id":"https://openalex.org/C8642999","wikidata":"https://www.wikidata.org/wiki/Q4171168","display_name":"Hyperparameter","level":2,"score":0.3021000027656555},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.29409998655319214},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.2935999929904938},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.2761000096797943},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.27079999446868896},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.2508000135421753},{"id":"https://openalex.org/C2780365114","wikidata":"https://www.wikidata.org/wiki/Q169478","display_name":"MATLAB","level":2,"score":0.2500999867916107}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tsp.2025.3607997","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2025.3607997","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/G3045771181","display_name":null,"funder_award_id":"PCL2023AS1-2","funder_id":"https://openalex.org/F4320318558","funder_display_name":"Peng Cheng Laboratory"},{"id":"https://openalex.org/G330146058","display_name":null,"funder_award_id":"12371464","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320318558","display_name":"Peng Cheng Laboratory","ror":"https://ror.org/03qdqbt06"},{"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":43,"referenced_works":["https://openalex.org/W1529522789","https://openalex.org/W1971443733","https://openalex.org/W1992114358","https://openalex.org/W2006579621","https://openalex.org/W2018962290","https://openalex.org/W2023535408","https://openalex.org/W2028191993","https://openalex.org/W2058077717","https://openalex.org/W2063302439","https://openalex.org/W2064888236","https://openalex.org/W2080855151","https://openalex.org/W2084304524","https://openalex.org/W2116141601","https://openalex.org/W2120549790","https://openalex.org/W2134507395","https://openalex.org/W2137628444","https://openalex.org/W2141682101","https://openalex.org/W2147601077","https://openalex.org/W2155486474","https://openalex.org/W2163363194","https://openalex.org/W2167077875","https://openalex.org/W2168625863","https://openalex.org/W2171066806","https://openalex.org/W2528695050","https://openalex.org/W2576906596","https://openalex.org/W2597555473","https://openalex.org/W2780484788","https://openalex.org/W2912522929","https://openalex.org/W2946683228","https://openalex.org/W2951803484","https://openalex.org/W2962727817","https://openalex.org/W2963129504","https://openalex.org/W2964121507","https://openalex.org/W2972982604","https://openalex.org/W3120875796","https://openalex.org/W3135884249","https://openalex.org/W3178014739","https://openalex.org/W4221152528","https://openalex.org/W4292363360","https://openalex.org/W4320029564","https://openalex.org/W4372266578","https://openalex.org/W4401387116","https://openalex.org/W4414123484"],"related_works":[],"abstract_inverted_index":{"Channel":[0],"estimation":[1,27],"(CE)":[2],"is":[3,137],"a":[4,19,71,79,113,154],"crucial":[5],"component":[6],"in":[7,177],"massive":[8,50],"multiple-input":[9],"multiple-output":[10],"(MIMO)":[11],"communication":[12],"systems,":[13,52],"while":[14],"existing":[15],"CE":[16,44,110,180],"methods":[17],"require":[18],"large":[20],"training":[21,90,182],"overhead":[22],"and":[23,56,95,121,184],"suffer":[24],"from":[25],"limited":[26,80],"accuracy":[28],"due":[29],"to":[30,88,125,139],"the":[31,43,66,109,127,141,148,159,171],"excessively":[32],"high":[33],"number":[34,81],"of":[35,82,150,163,173,179],"antennas.":[36],"In":[37],"this":[38],"paper,":[39],"we":[40,69,107,152],"focus":[41],"on":[42,85,158],"problem":[45,111,120,143],"for":[46],"time-division":[47],"duplex":[48],"(TDD)":[49],"MIMO":[51],"where":[53],"downlink":[54],"(DL)":[55],"uplink":[57],"(UL)":[58],"channels":[59],"exhibit":[60],"strong":[61],"reciprocity.":[62],"To":[63,145],"fully":[64],"exploit":[65],"channel":[67,74,97],"reciprocity,":[68],"design":[70],"DL-UL":[72],"collaborative":[73,115],"sounding":[75],"scheme":[76],"that":[77,169],"employs":[78],"transmit":[83],"antennas":[84],"both":[86],"sides":[87],"save":[89],"overhead.":[91],"By":[92],"integrating":[93],"DL":[94],"UL":[96],"measurements":[98],"with":[99],"different":[100],"signal-to-noise":[101],"ratios":[102],"into":[103],"two":[104],"data-fitting":[105],"terms,":[106],"formulate":[108],"as":[112],"downlink-uplink":[114],"atomic":[116,133],"norm":[117,134],"minimization":[118,135],"(DUCANM)":[119],"provide":[122],"theoretical":[123],"analysis":[124],"select":[126],"hyperparameters":[128],"involved.":[129],"A":[130],"partially":[131],"decoupled":[132],"formulation":[136],"proposed":[138,175],"solve":[140],"DUCANM":[142],"effectively.":[144],"further":[146],"accelerate":[147],"computation":[149],"DUCANM,":[151],"propose":[153],"fast":[155],"algorithm":[156],"based":[157],"alternating":[160],"direction":[161],"method":[162,176],"multipliers.":[164],"Numerical":[165],"simulations":[166],"are":[167],"provided":[168],"demonstrate":[170],"superiority":[172],"our":[174],"terms":[178],"accuracy,":[181],"overhead,":[183],"running":[185],"time.":[186]},"counts_by_year":[],"updated_date":"2026-04-09T08:11:56.329763","created_date":"2025-10-10T00:00:00"}