{"id":"https://openalex.org/W3171781331","doi":"https://doi.org/10.1109/vtc2021-spring51267.2021.9449010","title":"CSI Quantization for FDD Massive MIMO Communication","display_name":"CSI Quantization for FDD Massive MIMO Communication","publication_year":2021,"publication_date":"2021-04-01","ids":{"openalex":"https://openalex.org/W3171781331","doi":"https://doi.org/10.1109/vtc2021-spring51267.2021.9449010","mag":"3171781331"},"language":"en","primary_location":{"id":"doi:10.1109/vtc2021-spring51267.2021.9449010","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-spring51267.2021.9449010","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://aaltodoc.aalto.fi/handle/123456789/109609","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5034251584","display_name":"Roope Vehkalahti","orcid":"https://orcid.org/0000-0002-3052-0635"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Roope Vehkalahti","raw_affiliation_strings":["Aalto University, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aalto University, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079528656","display_name":"Jialing Liao","orcid":"https://orcid.org/0000-0002-6172-6505"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Jialing Liao","raw_affiliation_strings":["Aalto University, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aalto University, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010929469","display_name":"Tefjol Pllaha","orcid":"https://orcid.org/0000-0001-6280-2648"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Tefjol Pllaha","raw_affiliation_strings":["Aalto University, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aalto University, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100750910","display_name":"Wei Han","orcid":"https://orcid.org/0000-0003-4846-5715"},"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":"Wei Han","raw_affiliation_strings":["Huawei Technologies, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Huawei Technologies, China","institution_ids":["https://openalex.org/I2250955327"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006597250","display_name":"Olav Tirkkonen","orcid":"https://orcid.org/0000-0002-2611-1636"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Olav Tirkkonen","raw_affiliation_strings":["Aalto University, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Aalto University, Finland","institution_ids":["https://openalex.org/I9927081"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.6279,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.80741895,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"61","issue":null,"first_page":"1","last_page":"5"},"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9995999932289124,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9987999796867371,"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/quantization","display_name":"Quantization (signal processing)","score":0.7863090634346008},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7829506397247314},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.7436866164207458},{"id":"https://openalex.org/keywords/modular-design","display_name":"Modular design","score":0.7141335606575012},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6651204228401184},{"id":"https://openalex.org/keywords/subspace-topology","display_name":"Subspace topology","score":0.5756520628929138},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5725729465484619},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4956108331680298},{"id":"https://openalex.org/keywords/vector-quantization","display_name":"Vector quantization","score":0.49554502964019775},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4530671238899231},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.45200106501579285},{"id":"https://openalex.org/keywords/channelized","display_name":"Channelized","score":0.43650662899017334},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.399747371673584},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.3751315474510193},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3555169999599457},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.28237590193748474},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.16029369831085205},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.13702136278152466}],"concepts":[{"id":"https://openalex.org/C28855332","wikidata":"https://www.wikidata.org/wiki/Q198099","display_name":"Quantization (signal processing)","level":2,"score":0.7863090634346008},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7829506397247314},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.7436866164207458},{"id":"https://openalex.org/C101468663","wikidata":"https://www.wikidata.org/wiki/Q1620158","display_name":"Modular design","level":2,"score":0.7141335606575012},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6651204228401184},{"id":"https://openalex.org/C32834561","wikidata":"https://www.wikidata.org/wiki/Q660730","display_name":"Subspace topology","level":2,"score":0.5756520628929138},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5725729465484619},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4956108331680298},{"id":"https://openalex.org/C199833920","wikidata":"https://www.wikidata.org/wiki/Q612536","display_name":"Vector quantization","level":2,"score":0.49554502964019775},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4530671238899231},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.45200106501579285},{"id":"https://openalex.org/C51889082","wikidata":"https://www.wikidata.org/wiki/Q5072521","display_name":"Channelized","level":2,"score":0.43650662899017334},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.399747371673584},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.3751315474510193},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3555169999599457},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.28237590193748474},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.16029369831085205},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.13702136278152466},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/vtc2021-spring51267.2021.9449010","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-spring51267.2021.9449010","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","raw_type":"proceedings-article"},{"id":"pmh:oai:aaltodoc.aalto.fi:123456789/109609","is_oa":true,"landing_page_url":"https://research.aalto.fi/en/publications/b59d222b-01a7-418b-b6a5-f868dd0df6d8","pdf_url":"https://aaltodoc.aalto.fi/handle/123456789/109609","source":{"id":"https://openalex.org/S4306401662","display_name":"Aaltodoc (Aalto University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I9927081","host_organization_name":"Aalto University","host_organization_lineage":["https://openalex.org/I9927081"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"pmh:oai:aaltodoc.aalto.fi:123456789/109609","is_oa":true,"landing_page_url":"https://research.aalto.fi/en/publications/b59d222b-01a7-418b-b6a5-f868dd0df6d8","pdf_url":"https://aaltodoc.aalto.fi/handle/123456789/109609","source":{"id":"https://openalex.org/S4306401662","display_name":"Aaltodoc (Aalto University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I9927081","host_organization_name":"Aalto University","host_organization_lineage":["https://openalex.org/I9927081"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.6499999761581421,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320321108","display_name":"Academy of Finland","ror":"https://ror.org/05k73zm37"},{"id":"https://openalex.org/F4320322183","display_name":"Huawei Technologies","ror":"https://ror.org/00cmhce21"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3171781331.pdf","grobid_xml":"https://content.openalex.org/works/W3171781331.grobid-xml"},"referenced_works_count":9,"referenced_works":["https://openalex.org/W1578191401","https://openalex.org/W1971443733","https://openalex.org/W2015301486","https://openalex.org/W2074120933","https://openalex.org/W2074863717","https://openalex.org/W2140516306","https://openalex.org/W2143976439","https://openalex.org/W2793174211","https://openalex.org/W2962873267"],"related_works":["https://openalex.org/W2358732122","https://openalex.org/W2365358419","https://openalex.org/W2978079700","https://openalex.org/W2373037463","https://openalex.org/W2998321762","https://openalex.org/W2142438192","https://openalex.org/W2159703435","https://openalex.org/W2066521475","https://openalex.org/W2079056098","https://openalex.org/W4214571564"],"abstract_inverted_index":{"We":[0,71,100],"consider":[1],"high-dimensional":[2],"multiuser":[3],"MIMO":[4],"transmissions":[5],"in":[6,76,96,114,132],"Frequency":[7],"Division":[8],"Duplexing":[9],"systems.":[10],"For":[11],"precoding,":[12],"the":[13,26,30,54,74,83,93,97,102,107],"frequency":[14,56],"selective":[15,57],"channel":[16,121],"has":[17,41],"to":[18,25,66,82,106,126],"be":[19],"measured,":[20],"quantized":[21],"and":[22,59,69],"fed":[23],"back":[24],"base":[27],"station":[28],"by":[29,112],"users.":[31],"In":[32],"5G":[33,108],"New":[34],"Radio":[35],"(NR),":[36],"a":[37,48,78,115,118,127],"modular":[38,79,98],"quantization":[39,85,104],"approach":[40],"been":[42],"applied":[43],"for":[44,53],"this,":[45],"where":[46],"first":[47],"low-dimensional":[49],"subspace":[50,68],"is":[51],"identified":[52],"whole":[55],"channel,":[58],"then":[60],"subband":[61],"channels":[62],"are":[63],"linearly":[64],"mapped":[65],"this":[67,89],"quantized.":[70],"analyze":[72],"how":[73],"components":[75,95],"such":[77],"scheme":[80,105],"contribute":[81],"overall":[84],"distortion.":[86],"Based":[87],"on":[88],"analysis":[90],"we":[91],"improve":[92],"technology":[94],"approach.":[99],"compare":[101],"improved":[103],"NR":[109],"standardized":[110],"version":[111],"simulation":[113],"scenario":[116],"with":[117],"realistic":[119],"spatial":[120],"model.":[122],"The":[123],"improvements":[124],"lead":[125],"more":[128],"than":[129],"25%":[130],"improvement":[131],"spectral":[133],"efficiency.":[134]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2}],"updated_date":"2026-08-01T09:00:35.917206","created_date":"2025-10-10T00:00:00"}
