{"id":"https://openalex.org/W7155071387","doi":"https://doi.org/10.1109/ncc68160.2026.11479061","title":"SRS-Aided Channel Estimation and Doppler-Adaptive CSI Reuse for 5G NR MU-MIMO: A Slot-Level Performance Evaluation","display_name":"SRS-Aided Channel Estimation and Doppler-Adaptive CSI Reuse for 5G NR MU-MIMO: A Slot-Level Performance Evaluation","publication_year":2026,"publication_date":"2026-02-26","ids":{"openalex":"https://openalex.org/W7155071387","doi":"https://doi.org/10.1109/ncc68160.2026.11479061"},"language":null,"primary_location":{"id":"doi:10.1109/ncc68160.2026.11479061","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ncc68160.2026.11479061","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 National Conference on Communications (NCC)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5134113394","display_name":"Lalit Kumar Bharti","orcid":null},"institutions":[{"id":"https://openalex.org/I132153292","display_name":"Indian Institute of Technology Patna","ror":"https://ror.org/01ft5vz71","country_code":"IN","type":"education","lineage":["https://openalex.org/I132153292"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Lalit Kumar Bharti","raw_affiliation_strings":["Indian Institute of Technology Patna,Department of Electrical Engineering,India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indian Institute of Technology Patna,Department of Electrical Engineering,India","institution_ids":["https://openalex.org/I132153292"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5134166328","display_name":"Adarsh Ravi","orcid":null},"institutions":[{"id":"https://openalex.org/I132153292","display_name":"Indian Institute of Technology Patna","ror":"https://ror.org/01ft5vz71","country_code":"IN","type":"education","lineage":["https://openalex.org/I132153292"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Adarsh Ravi","raw_affiliation_strings":["Indian Institute of Technology Patna,Department of Electrical Engineering,India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indian Institute of Technology Patna,Department of Electrical Engineering,India","institution_ids":["https://openalex.org/I132153292"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5134180797","display_name":"Krishnan Venkataraghvan","orcid":null},"institutions":[{"id":"https://openalex.org/I1301041018","display_name":"Rakuten (Japan)","ror":"https://ror.org/0098kke80","country_code":"JP","type":"company","lineage":["https://openalex.org/I1301041018"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Krishnan Venkataraghvan","raw_affiliation_strings":["Rakuten Mobile, Inc.,Setagaya,Tokyo,Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rakuten Mobile, Inc.,Setagaya,Tokyo,Japan","institution_ids":["https://openalex.org/I1301041018"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5134138467","display_name":"Preetam Kumar","orcid":null},"institutions":[{"id":"https://openalex.org/I132153292","display_name":"Indian Institute of Technology Patna","ror":"https://ror.org/01ft5vz71","country_code":"IN","type":"education","lineage":["https://openalex.org/I132153292"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Preetam Kumar","raw_affiliation_strings":["Indian Institute of Technology Patna,Department of Electrical Engineering,India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Indian Institute of Technology Patna,Department of Electrical Engineering,India","institution_ids":["https://openalex.org/I132153292"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.35638749,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"543","last_page":"548"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.38670000433921814,"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":0.38670000433921814,"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":0.3411000072956085,"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":0.041200000792741776,"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/channel","display_name":"Channel (broadcasting)","score":0.5512999892234802},{"id":"https://openalex.org/keywords/reuse","display_name":"Reuse","score":0.5303999781608582},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.37130001187324524},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.33880001306533813},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.2784000039100647}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5986999869346619},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5512999892234802},{"id":"https://openalex.org/C206588197","wikidata":"https://www.wikidata.org/wiki/Q846574","display_name":"Reuse","level":2,"score":0.5303999781608582},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4140999913215637},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.37130001187324524},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.33880001306533813},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.2784000039100647},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2770000100135803},{"id":"https://openalex.org/C200601418","wikidata":"https://www.wikidata.org/wiki/Q2193887","display_name":"Reliability engineering","level":1,"score":0.26649999618530273},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.2621000111103058},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.25609999895095825},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.2506999969482422}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ncc68160.2026.11479061","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ncc68160.2026.11479061","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 National Conference on Communications (NCC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.47140952944755554}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1971443733","https://openalex.org/W1986478371","https://openalex.org/W2011836673","https://openalex.org/W2014447384","https://openalex.org/W2037056881","https://openalex.org/W2054692642","https://openalex.org/W2098126478","https://openalex.org/W2100995993","https://openalex.org/W2111451941","https://openalex.org/W2121315337","https://openalex.org/W2128513990","https://openalex.org/W2140452629","https://openalex.org/W2140578794","https://openalex.org/W2141682101","https://openalex.org/W2149743051","https://openalex.org/W2164290759","https://openalex.org/W2164536085","https://openalex.org/W2171066806","https://openalex.org/W2962790780","https://openalex.org/W2963766983","https://openalex.org/W2972260047"],"related_works":[],"abstract_inverted_index":{"Accurate":[0],"channel":[1,41,69,163,178],"knowledge":[2],"is":[3,31,58],"essential":[4],"for":[5,43,60,188],"enabling":[6],"efficient":[7],"multi-user":[8],"multi-input":[9],"multi-output":[10],"(MU-MIMO)":[11],"transmission":[12,85],"in":[13,24,147,184,206,228],"fifth-generation":[14],"(5G)":[15],"new":[16],"radio":[17],"(NR)":[18],"systems.":[19],"Channel":[20],"state":[21],"information":[22],"(CSI)":[23],"5G":[25],"NR":[26],"time-division":[27],"duplexing":[28],"(TDD)":[29],"systems":[30],"calculated":[32],"through":[33],"uplink":[34],"(UL)":[35],"sounding":[36],"reference":[37],"signals":[38],"(SRS),":[39],"using":[40,118],"reciprocity":[42],"downlink":[44],"(DL)":[45],"precoding.":[46,63],"In":[47],"the":[48,56,68,83,99,131,135,207,229],"case":[49],"of":[50,177,181],"massive":[51],"MU-MIMO,":[52],"accurate":[53],"CSI":[54,74,88,108,116,132],"at":[55,98,215],"transmitter":[57],"needed":[59],"beamforming":[61],"or":[62,129],"However,":[64],"under":[65,240],"high":[66,216],"mobility,":[67],"varies":[70],"rapidly,":[71],"causing":[72],"UL-acquired":[73],"to":[75,127,213],"become":[76],"outdated":[77],"within":[78],"a":[79,105,148,203],"few":[80],"slots.":[81],"Increasing":[82],"SRS":[84],"rate":[86,237],"mitigates":[87],"ageing":[89],"but":[90],"significantly":[91],"raises":[92],"UL":[93],"overhead":[94],"and":[95,110,139,192],"computational":[96,230],"load":[97],"gNodeB":[100],"(gNB).":[101],"This":[102],"paper":[103],"proposes":[104],"Doppler-aware,":[106],"slotwise":[107],"acquisition":[109],"precoding":[111],"framework":[112,124],"that":[113],"dynamically":[114],"adapts":[115],"updates":[117],"an":[119],"adaptive":[120],"reuse":[121,130],"mechanism.":[122],"The":[123,152,175,199],"selects":[125],"whether":[126],"refresh":[128],"based":[133],"on":[134],"estimated":[136],"Doppler":[137,170,242],"shift":[138],"condition":[140],"number.":[141],"System-level":[142],"simulations":[143],"have":[144],"been":[145,165,197,226],"done":[146],"slot-wise":[149],"TDD":[150],"environment.":[151],"3rd":[153],"generation":[154],"partnership":[155],"project":[156],"(3":[157],"GPP)":[158],"cluster":[159],"delayed":[160],"line":[161],"(CDL)":[162],"has":[164,195],"considered":[166],"with":[167],"per":[168],"slot":[169],"fluctuation":[171],"between":[172],"60-185":[173],"Hz.":[174],"role":[176],"subspace":[179],"degrees":[180],"freedom":[182],"(DoFs)":[183],"selecting":[185],"suitable":[186],"precoders":[187],"single-user":[189],"MIMO":[190],"(SU-MIMO)":[191],"MU-MIMO":[193],"operation":[194],"also":[196],"examined.":[198],"simulation":[200],"results":[201],"demonstrate":[202],"2-fold":[204],"improvement":[205],"sum-spectral":[208],"efficiency":[209],"(SE)":[210],"as":[211],"compared":[212],"SU-MIMO":[214],"signal-to-noise":[217],"ratio":[218],"(SNR).":[219],"A":[220],"reduction":[221],"of$\\mathbf{1":[222],"5}-\\mathbf{2":[223],"0":[224],"\\%}$has":[225],"observed":[227],"complexity,":[231],"while":[232],"maintaining":[233],"robust":[234],"block":[235],"error":[236],"(BLER)":[238],"performance":[239],"varying":[241],"values.":[243]},"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2026-04-22T00:00:00"}
