{"id":"https://openalex.org/W1544340145","doi":"https://doi.org/10.1109/itwnit.2009.5158576","title":"Optimized training and feedback for MIMO downlink channels","display_name":"Optimized training and feedback for MIMO downlink channels","publication_year":2009,"publication_date":"2009-06-01","ids":{"openalex":"https://openalex.org/W1544340145","doi":"https://doi.org/10.1109/itwnit.2009.5158576","mag":"1544340145"},"language":"en","primary_location":{"id":"doi:10.1109/itwnit.2009.5158576","is_oa":false,"landing_page_url":"https://doi.org/10.1109/itwnit.2009.5158576","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE Information Theory Workshop on Networking and Information Theory","raw_type":"proceedings-article"},"type":"article","indexed_in":["arxiv","crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/0905.3689","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Mari Kobayashi","orcid":null},"institutions":[{"id":"https://openalex.org/I102475099","display_name":"Sup\u00e9lec","ror":"https://ror.org/00n7gwn90","country_code":"FR","type":"education","lineage":["https://openalex.org/I102475099"]}],"countries":["FR"],"is_corresponding":true,"raw_author_name":"Mari Kobayashi","raw_affiliation_strings":["SUPELEC, Gif-sur-Yvette, France"],"affiliations":[{"raw_affiliation_string":"SUPELEC, Gif-sur-Yvette, France","institution_ids":["https://openalex.org/I102475099"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Nihar Jindal","orcid":null},"institutions":[{"id":"https://openalex.org/I130238516","display_name":"University of Minnesota","ror":"https://ror.org/017zqws13","country_code":"US","type":"education","lineage":["https://openalex.org/I130238516"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nihar Jindal","raw_affiliation_strings":["University of Minnesota, Minneapolis, MN, USA"],"affiliations":[{"raw_affiliation_string":"University of Minnesota, Minneapolis, MN, USA","institution_ids":["https://openalex.org/I130238516"]}]},{"author_position":"last","author":{"id":null,"display_name":"Giuseppe Caire","orcid":null},"institutions":[{"id":"https://openalex.org/I1174212","display_name":"University of Southern California","ror":"https://ror.org/03taz7m60","country_code":"US","type":"education","lineage":["https://openalex.org/I1174212"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Giuseppe Caire","raw_affiliation_strings":["University of Southern California, Los Angeles, CA, USA"],"affiliations":[{"raw_affiliation_string":"University of Southern California, Los Angeles, CA, USA","institution_ids":["https://openalex.org/I1174212"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I102475099"],"apc_list":null,"apc_paid":null,"fwci":2.132,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.8697633,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"226","last_page":"230"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9979000091552734,"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"}},{"id":"https://openalex.org/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9970999956130981,"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/telecommunications-link","display_name":"Telecommunications link","score":0.7849000096321106},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.742900013923645},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.694100022315979},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6485999822616577},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6212999820709229},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.4950999915599823},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.4934999942779541}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7849000096321106},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.742900013923645},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.694100022315979},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6485999822616577},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6212999820709229},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.560699999332428},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.4950999915599823},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.4934999942779541},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.4918999969959259},{"id":"https://openalex.org/C169334058","wikidata":"https://www.wikidata.org/wiki/Q353292","display_name":"Additive white Gaussian noise","level":3,"score":0.45590001344680786},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.45500001311302185},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3986000120639801},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.39649999141693115},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3564999997615814},{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.3531000018119812},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.32850000262260437},{"id":"https://openalex.org/C91330434","wikidata":"https://www.wikidata.org/wiki/Q738298","display_name":"Multi-user MIMO","level":4,"score":0.3190000057220459},{"id":"https://openalex.org/C2985963534","wikidata":"https://www.wikidata.org/wiki/Q7603704","display_name":"State information","level":3,"score":0.25929999351501465}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/itwnit.2009.5158576","is_oa":false,"landing_page_url":"https://doi.org/10.1109/itwnit.2009.5158576","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE Information Theory Workshop on Networking and Information Theory","raw_type":"proceedings-article"},{"id":"pmh:oai:arXiv.org:0905.3689","is_oa":true,"landing_page_url":"http://arxiv.org/abs/0905.3689","pdf_url":"https://arxiv.org/pdf/0905.3689","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:0905.3689","is_oa":true,"landing_page_url":"http://arxiv.org/abs/0905.3689","pdf_url":"https://arxiv.org/pdf/0905.3689","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":3,"referenced_works":["https://openalex.org/W2117595685","https://openalex.org/W6606200338","https://openalex.org/W6611723869"],"related_works":[],"abstract_inverted_index":{"We":[0],"consider":[1],"a":[2,74,123],"MIMO":[3],"fading":[4,76],"broadcast":[5],"channel":[6,8,20,27,37,64,72,96],"where":[7],"state":[9,28],"information":[10,29],"is":[11,22,41,54,82,105,119],"acquired":[12],"at":[13],"user":[14],"terminals":[15],"via":[16],"downlink":[17,62,102],"training":[18,103],"and":[19,66,78,93],"feedback":[21,36,114,118],"used":[23,60],"to":[24,31,107,121],"provide":[25,122],"transmitter":[26],"(CSIT)":[30],"the":[32,55,58,71,86,110],"base":[33],"station.":[34],"The":[35,50,98],"(the":[38],"corresponding":[39],"uplink)":[40],"modeled":[42],"as":[43],"an":[44],"AWGN":[45],"channel,":[46],"orthogonal":[47],"across":[48],"users.":[49],"total":[51],"bandwidth":[52],"consumed":[53],"sum":[56],"of":[57,101],"bandwidth/resources":[59],"for":[61,90,112],"training,":[63],"feedback,":[65],"data":[67],"transmission.":[68],"Assuming":[69],"that":[70,79],"follows":[73],"block":[75],"model":[77],"zero-forcing":[80],"beamforming":[81],"used,":[83],"we":[84],"optimize":[85],"net":[87,125],"achievable":[88],"rate":[89,126],"unquantized":[91],"(analog)":[92],"quantized":[94],"(digital)":[95],"feedback.":[97,129],"optimal":[99],"number":[100],"pilots":[104],"seen":[106],"be":[108],"essentially":[109],"same":[111],"both":[113],"techniques,":[115],"but":[116],"digital":[117],"shown":[120],"larger":[124],"than":[127],"analog":[128]},"counts_by_year":[{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2016-06-24T00:00:00"}