{"id":"https://openalex.org/W2119384914","doi":"https://doi.org/10.1109/icc.2009.5198613","title":"A Greedy Cophasing Scheme for MIMO Beamforming Systems Using Quantized Feedback","display_name":"A Greedy Cophasing Scheme for MIMO Beamforming Systems Using Quantized Feedback","publication_year":2009,"publication_date":"2009-06-01","ids":{"openalex":"https://openalex.org/W2119384914","doi":"https://doi.org/10.1109/icc.2009.5198613","mag":"2119384914"},"language":"en","primary_location":{"id":"doi:10.1109/icc.2009.5198613","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2009.5198613","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Conference on Communications","raw_type":"proceedings-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/A5084176514","display_name":"Y. G. Kim","orcid":null},"institutions":[{"id":"https://openalex.org/I124633538","display_name":"University of Seoul","ror":"https://ror.org/05en5nh73","country_code":"KR","type":"education","lineage":["https://openalex.org/I124633538"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Y. G. Kim","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Seoul, Seoul, South Korea","Dept. of Electrical and Computer Eng., University of Seoul, Seoul, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Seoul, Seoul, South Korea","institution_ids":["https://openalex.org/I124633538"]},{"raw_affiliation_string":"Dept. of Electrical and Computer Eng., University of Seoul, Seoul, Korea","institution_ids":["https://openalex.org/I124633538"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038087450","display_name":"Norman C. Beaulieu","orcid":"https://orcid.org/0000-0001-9233-219X"},"institutions":[{"id":"https://openalex.org/I154425047","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27","country_code":"CA","type":"education","lineage":["https://openalex.org/I154425047"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"N. C. Beaulieu","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada","Department of Electrical and Computer Engineering; University of Alberta; Edmonton, Alberta Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada","institution_ids":["https://openalex.org/I154425047"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering; University of Alberta; Edmonton, Alberta Canada","institution_ids":["https://openalex.org/I154425047"]}]}],"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":1,"citation_normalized_percentile":{"value":0.14179417,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"51","issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10575","display_name":"Wireless Communication Networks Research","score":0.9994000196456909,"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/codebook","display_name":"Codebook","score":0.8998569250106812},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.7128702998161316},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6883753538131714},{"id":"https://openalex.org/keywords/diversity-gain","display_name":"Diversity gain","score":0.5969036221504211},{"id":"https://openalex.org/keywords/rayleigh-fading","display_name":"Rayleigh fading","score":0.5478132367134094},{"id":"https://openalex.org/keywords/hadamard-transform","display_name":"Hadamard transform","score":0.5409889817237854},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4963892102241516},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4952181875705719},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.43459370732307434},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.42879438400268555},{"id":"https://openalex.org/keywords/greedy-algorithm","display_name":"Greedy algorithm","score":0.4221007525920868},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.41793206334114075},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.40834173560142517},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.23463726043701172},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.17578747868537903}],"concepts":[{"id":"https://openalex.org/C127759330","wikidata":"https://www.wikidata.org/wiki/Q637416","display_name":"Codebook","level":2,"score":0.8998569250106812},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7128702998161316},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6883753538131714},{"id":"https://openalex.org/C164785522","wikidata":"https://www.wikidata.org/wiki/Q5283966","display_name":"Diversity gain","level":4,"score":0.5969036221504211},{"id":"https://openalex.org/C56985126","wikidata":"https://www.wikidata.org/wiki/Q854039","display_name":"Rayleigh fading","level":4,"score":0.5478132367134094},{"id":"https://openalex.org/C60292330","wikidata":"https://www.wikidata.org/wiki/Q1014065","display_name":"Hadamard transform","level":2,"score":0.5409889817237854},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4963892102241516},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4952181875705719},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.43459370732307434},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.42879438400268555},{"id":"https://openalex.org/C51823790","wikidata":"https://www.wikidata.org/wiki/Q504353","display_name":"Greedy algorithm","level":2,"score":0.4221007525920868},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.41793206334114075},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.40834173560142517},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.23463726043701172},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.17578747868537903},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icc.2009.5198613","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2009.5198613","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Conference on Communications","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W595252221","https://openalex.org/W1484706112","https://openalex.org/W1528854959","https://openalex.org/W1592635802","https://openalex.org/W1715824619","https://openalex.org/W1972485395","https://openalex.org/W1974598214","https://openalex.org/W2029498375","https://openalex.org/W2074863717","https://openalex.org/W2082091026","https://openalex.org/W2110659753","https://openalex.org/W2130256523","https://openalex.org/W2151971941","https://openalex.org/W2165759030","https://openalex.org/W2167005403","https://openalex.org/W2610335499","https://openalex.org/W2798333393","https://openalex.org/W3113221786","https://openalex.org/W4251059783","https://openalex.org/W6629050927","https://openalex.org/W6637637651","https://openalex.org/W6643926502"],"related_works":["https://openalex.org/W3183948672","https://openalex.org/W3173606202","https://openalex.org/W3110381201","https://openalex.org/W2948807893","https://openalex.org/W2103701079","https://openalex.org/W2076148615","https://openalex.org/W2380546977","https://openalex.org/W2121913003","https://openalex.org/W3104937183","https://openalex.org/W4297823741"],"abstract_inverted_index":{"We":[0],"propose":[1,51],"the":[2,25,29,79,86,94],"Hadamard":[3,26],"matrix":[4],"as":[5,35],"a":[6,17,36,52],"codebook":[7,27],"for":[8,56],"multiple-input":[9],"multiple-output":[10],"(MIMO)":[11],"beamforming":[12,58],"systems,":[13],"and":[14,93],"show":[15],"that":[16],"quantized":[18,61],"equal":[19],"gain":[20,71],"transmission":[21],"(QEGT)":[22],"scheme":[23,41,55,66],"using":[24,60],"has":[28],"same":[30],"symbol":[31],"error":[32],"probability":[33],"performance":[34],"receiver":[37],"selection":[38],"diversity":[39],"combining":[40],"operating":[42],"in":[43],"independent":[44],"generalized":[45],"Rayleigh":[46],"fading":[47],"channels.":[48],"Also,":[49],"we":[50],"greedy":[53,64],"cophasing":[54,65],"MIMO":[57],"systems":[59],"feedback.":[62],"The":[63],"provides":[67],"3.2":[68],"dB":[69],"power":[70],"over":[72],"an":[73],"orthogonal":[74],"space-time":[75],"block":[76],"code":[77],"when":[78],"number":[80,87,95],"of":[81,88,96],"transmit":[82],"antennas":[83,90],"is":[84,91,99],"four,":[85],"receive":[89],"one,":[92],"feedback":[97],"bits":[98],"three.":[100]},"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}