{"id":"https://openalex.org/W2305505504","doi":"https://doi.org/10.1109/tcomm.2016.2521724","title":"The Degrees of Freedom Region of the Cognitive Interference Channel With Delayed Channel State Information Feedback","display_name":"The Degrees of Freedom Region of the Cognitive Interference Channel With Delayed Channel State Information Feedback","publication_year":2016,"publication_date":"2016-01-26","ids":{"openalex":"https://openalex.org/W2305505504","doi":"https://doi.org/10.1109/tcomm.2016.2521724","mag":"2305505504"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2016.2521724","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2016.2521724","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-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/A5049983554","display_name":"Dae Kyu Shin","orcid":"https://orcid.org/0000-0001-9121-8096"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Dae Kyu Shin","raw_affiliation_strings":["School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035102148","display_name":"Wan Choi","orcid":"https://orcid.org/0000-0003-3930-7088"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Wan Choi","raw_affiliation_strings":["School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5049983554"],"corresponding_institution_ids":["https://openalex.org/I157485424"],"apc_list":null,"apc_paid":null,"fwci":0.5623,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.69512563,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"64","issue":"3","first_page":"1329","last_page":"1341"},"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/T10964","display_name":"Wireless Communication Security Techniques","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":0.9993000030517578,"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/channel-state-information","display_name":"Channel state information","score":0.8314610719680786},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.7728080749511719},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.7020237445831299},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6984244585037231},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6325812339782715},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.632116973400116},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.6297012567520142},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.6181716918945312},{"id":"https://openalex.org/keywords/degrees-of-freedom","display_name":"Degrees of freedom (physics and chemistry)","score":0.578458845615387},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.5305132269859314},{"id":"https://openalex.org/keywords/interference-alignment","display_name":"Interference alignment","score":0.42998161911964417},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.3735925555229187},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.367504358291626},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3631209433078766},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.35873231291770935},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.2512871026992798},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.20915177464485168},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.10704421997070312},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.09946882724761963},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09782686829566956},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.06377518177032471}],"concepts":[{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.8314610719680786},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.7728080749511719},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.7020237445831299},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6984244585037231},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6325812339782715},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.632116973400116},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.6297012567520142},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.6181716918945312},{"id":"https://openalex.org/C208081375","wikidata":"https://www.wikidata.org/wiki/Q274502","display_name":"Degrees of freedom (physics and chemistry)","level":2,"score":0.578458845615387},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.5305132269859314},{"id":"https://openalex.org/C2982854036","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference alignment","level":4,"score":0.42998161911964417},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.3735925555229187},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.367504358291626},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3631209433078766},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.35873231291770935},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.2512871026992798},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.20915177464485168},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.10704421997070312},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.09946882724761963},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09782686829566956},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.06377518177032471},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2016.2521724","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2016.2521724","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.8299999833106995,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":24,"referenced_works":["https://openalex.org/W273299822","https://openalex.org/W1650635459","https://openalex.org/W1965689631","https://openalex.org/W1973532940","https://openalex.org/W1979408141","https://openalex.org/W1983978365","https://openalex.org/W1985489190","https://openalex.org/W2002469179","https://openalex.org/W2006170380","https://openalex.org/W2007309003","https://openalex.org/W2047814558","https://openalex.org/W2056418000","https://openalex.org/W2106549261","https://openalex.org/W2106697356","https://openalex.org/W2108438541","https://openalex.org/W2108850836","https://openalex.org/W2111772171","https://openalex.org/W2124982134","https://openalex.org/W2136608712","https://openalex.org/W2158756365","https://openalex.org/W2162758144","https://openalex.org/W2763552505","https://openalex.org/W3125864775","https://openalex.org/W4301407087"],"related_works":["https://openalex.org/W2059045613","https://openalex.org/W4250215096","https://openalex.org/W2119209917","https://openalex.org/W2145047504","https://openalex.org/W2147127144","https://openalex.org/W2070619890","https://openalex.org/W2159179523","https://openalex.org/W2344350961","https://openalex.org/W2950791861","https://openalex.org/W2111349105"],"abstract_inverted_index":{"This":[0],"paper":[1],"studies":[2],"two-user":[3],"cognitive":[4,70,119,138],"multiple-input":[5],"multiple-output":[6],"(MIMO)":[7],"interference":[8,53,56,78],"channel":[9,12],"with":[10,60,105],"delayed":[11,74,135],"state":[13],"information":[14],"at":[15,27],"transmitter":[16,20],"(CSIT),":[17],"where":[18,134],"a":[19],"possesses":[21],"noncasual":[22],"knowledge":[23],"of":[24,37,86,96,109,118],"data":[25],"originating":[26],"the":[28,63,83,93,106,116,126],"other":[29],"user.":[30],"We":[31],"first":[32],"derive":[33],"an":[34],"upper":[35],"bound":[36,45],"degrees-of-freedom":[38],"(DoF)":[39],"region":[40],"and":[41,55,79,89,114,121,137],"then":[42],"propose":[43],"DoF":[44,65,107,127],"achieving":[46],"schemes":[47,67],"for":[48],"various":[49],"antenna":[50,61,132],"configurations.":[51],"Since":[52],"condition":[54],"suppression":[57],"capability":[58],"vary":[59],"configurations,":[62],"proposed":[64],"optimal":[66],"differently":[68],"utilize":[69],"transmission":[71,120,139],"based":[72],"on":[73],"CSIT":[75,123,136],"to":[76],"suppress":[77],"thus":[80],"differ":[81],"in":[82],"required":[84],"numbers":[85],"time":[87],"slots":[88],"transmit":[90],"symbols,":[91],"although":[92],"key":[94],"idea":[95],"swapping":[97],"interfering":[98],"signals":[99],"between":[100],"users":[101],"is":[102],"common.":[103],"Comparing":[104],"regions":[108],"relevant":[110],"channels,":[111],"we":[112],"identify":[113],"analyze":[115],"contributions":[117],"delay":[122],"toward":[124],"enlarging":[125],"region.":[128],"Our":[129],"analysis":[130],"specifies":[131],"configurations":[133],"are":[140],"useful,":[141],"respectively.":[142]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}