{"id":"https://openalex.org/W2139523590","doi":"https://doi.org/10.1109/icc.2011.5963176","title":"Linear Precoder Designs for Cognitive Radio Multiuser MIMO Downlink Systems","display_name":"Linear Precoder Designs for Cognitive Radio Multiuser MIMO Downlink Systems","publication_year":2011,"publication_date":"2011-06-01","ids":{"openalex":"https://openalex.org/W2139523590","doi":"https://doi.org/10.1109/icc.2011.5963176","mag":"2139523590"},"language":"en","primary_location":{"id":"doi:10.1109/icc.2011.5963176","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2011.5963176","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Conference on Communications (ICC)","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/A5010343793","display_name":"Kyoung\u2010Jae Lee","orcid":"https://orcid.org/0000-0001-9579-6600"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kyoung-Jae Lee","raw_affiliation_strings":["School of Electrical Engineering, Korea University, Seoul, South Korea","Sch. of Electr. Eng., Korea Univ., Seoul, South Korea#TAB#"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea University, Seoul, South Korea","institution_ids":["https://openalex.org/I197347611"]},{"raw_affiliation_string":"Sch. of Electr. Eng., Korea Univ., Seoul, South Korea#TAB#","institution_ids":["https://openalex.org/I197347611"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109871732","display_name":"Hakjea Sung","orcid":null},"institutions":[{"id":"https://openalex.org/I2250650973","display_name":"Samsung (South Korea)","ror":"https://ror.org/04w3jy968","country_code":"KR","type":"company","lineage":["https://openalex.org/I2250650973"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hakjea Sung","raw_affiliation_strings":["Samsung Electronics Company Limited, Suwon, South Korea","Samsung Electron., Suwon, South Korea#TAB#"],"affiliations":[{"raw_affiliation_string":"Samsung Electronics Company Limited, Suwon, South Korea","institution_ids":["https://openalex.org/I2250650973"]},{"raw_affiliation_string":"Samsung Electron., Suwon, South Korea#TAB#","institution_ids":["https://openalex.org/I2250650973"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100697614","display_name":"Inkyu Lee","orcid":"https://orcid.org/0000-0003-3701-4433"},"institutions":[{"id":"https://openalex.org/I197347611","display_name":"Korea University","ror":"https://ror.org/047dqcg40","country_code":"KR","type":"education","lineage":["https://openalex.org/I197347611"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Inkyu Lee","raw_affiliation_strings":["School of Electrical Engineering, Korea University, Seoul, South Korea","Sch. of Electr. Eng., Korea Univ., Seoul, South Korea#TAB#"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea University, Seoul, South Korea","institution_ids":["https://openalex.org/I197347611"]},{"raw_affiliation_string":"Sch. of Electr. Eng., Korea Univ., Seoul, South Korea#TAB#","institution_ids":["https://openalex.org/I197347611"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5010343793"],"corresponding_institution_ids":["https://openalex.org/I197347611"],"apc_list":null,"apc_paid":null,"fwci":3.9745,"has_fulltext":false,"cited_by_count":21,"citation_normalized_percentile":{"value":0.94126923,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"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":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/T10575","display_name":"Wireless Communication Networks Research","score":0.9998000264167786,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9994999766349792,"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":0.7586749792098999},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.7330772876739502},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.6922652721405029},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6691877245903015},{"id":"https://openalex.org/keywords/minimum-mean-square-error","display_name":"Minimum mean square error","score":0.6049091219902039},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5781518816947937},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.511781632900238},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5113155841827393},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.41171014308929443},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.32392749190330505},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.25539809465408325},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1498667597770691},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.12335065007209778}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7586749792098999},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.7330772876739502},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.6922652721405029},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6691877245903015},{"id":"https://openalex.org/C90652560","wikidata":"https://www.wikidata.org/wiki/Q11091747","display_name":"Minimum mean square error","level":3,"score":0.6049091219902039},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5781518816947937},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.511781632900238},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5113155841827393},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.41171014308929443},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.32392749190330505},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.25539809465408325},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1498667597770691},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.12335065007209778},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icc.2011.5963176","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc.2011.5963176","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE International Conference on Communications (ICC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1976109068","https://openalex.org/W2040581666","https://openalex.org/W2067145564","https://openalex.org/W2098126478","https://openalex.org/W2105147296","https://openalex.org/W2106407592","https://openalex.org/W2133107645","https://openalex.org/W2144228966","https://openalex.org/W2146461054","https://openalex.org/W2168078104","https://openalex.org/W2170310805","https://openalex.org/W2171011543"],"related_works":["https://openalex.org/W4281688526","https://openalex.org/W2152088989","https://openalex.org/W2756419127","https://openalex.org/W4366493479","https://openalex.org/W2905893439","https://openalex.org/W3141240674","https://openalex.org/W2489379490","https://openalex.org/W2141031289","https://openalex.org/W2103590590","https://openalex.org/W1997240170"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,53],"develop":[4],"linear":[5],"precoding":[6],"methods":[7],"for":[8,72,118],"cognitive":[9],"radio":[10],"(CR)":[11],"multi-user":[12],"multiple-input":[13],"multiple-output":[14],"(MU-MIMO)":[15],"broadcast":[16],"systems":[17],"where":[18],"unlicensed":[19],"secondary":[20],"users":[21],"(SUs)":[22],"simultaneously":[23],"use":[24],"the":[25,29,35,44,61,73,78,83,92,100,104,114],"same":[26],"spectrum":[27],"of":[28],"licensed":[30],"primary":[31],"user":[32],"(PU).":[33],"When":[34],"zero-forcing":[36],"block":[37],"diagonalization":[38],"(ZF-BD)":[39],"precoder":[40,58],"is":[41],"extended":[42],"to":[43,68,91],"CR":[45,119],"network,":[46],"a":[47,55,76],"noise":[48],"enhancement":[49],"problem":[50],"occurs.":[51],"Therefore,":[52],"propose":[54],"regularized":[56],"BD":[57],"based":[59,94,106],"on":[60],"minimum":[62],"mean-square":[63],"error":[64],"(MMSE)":[65],"criteria":[66],"subject":[67],"zero":[69],"interference":[70],"constraint":[71],"PU.":[74],"As":[75],"result,":[77],"proposed":[79,101],"MMSE-BD":[80],"scheme":[81],"improves":[82],"signal-to-interference-plus-noise":[84],"ratio":[85],"at":[86,113],"each":[87],"SU's":[88],"receiver":[89],"compared":[90],"ZF-BD":[93],"method.":[95],"Simulation":[96],"results":[97],"demonstrate":[98],"that":[99],"algorithm":[102],"outperforms":[103],"ZF":[105],"technique":[107],"by":[108],"more":[109],"than":[110],"5":[111],"dB":[112],"sum-rate":[115],"10":[116],"bps/Hz":[117],"MU-MIMO":[120],"downlink":[121],"systems.":[122]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":7},{"year":2012,"cited_by_count":7}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}