{"id":"https://openalex.org/W2970017021","doi":"https://doi.org/10.1109/spawc.2019.8815596","title":"A Low-Complexity Cache-Aided Multi-Antenna Content Delivery Scheme","display_name":"A Low-Complexity Cache-Aided Multi-Antenna Content Delivery Scheme","publication_year":2019,"publication_date":"2019-07-01","ids":{"openalex":"https://openalex.org/W2970017021","doi":"https://doi.org/10.1109/spawc.2019.8815596","mag":"2970017021"},"language":"en","primary_location":{"id":"doi:10.1109/spawc.2019.8815596","is_oa":false,"landing_page_url":"https://doi.org/10.1109/spawc.2019.8815596","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","raw_type":"proceedings-article"},"type":"preprint","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/11380/1202713","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086387994","display_name":"Junlin Zhao","orcid":"https://orcid.org/0000-0002-3354-9564"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Junlin Zhao","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Imperial College London, London, UK"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Imperial College London, London, UK","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010987707","display_name":"Mohammad Mohammadi Amiri","orcid":"https://orcid.org/0000-0003-0701-9591"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Mohammad Mohammadi Amiri","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Imperial College London, London, UK"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Imperial College London, London, UK","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016883501","display_name":"Den\u0131z G\u00fcnd\u00fcz","orcid":"https://orcid.org/0000-0002-7725-395X"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Deniz Gunduz","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Imperial College London, London, UK"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Imperial College London, London, UK","institution_ids":["https://openalex.org/I47508984"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5086387994"],"corresponding_institution_ids":["https://openalex.org/I47508984"],"apc_list":null,"apc_paid":null,"fwci":0.9268,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.77915592,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"abs 1711 5969","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11478","display_name":"Caching and Content Delivery","score":0.9998999834060669,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9991000294685364,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9980000257492065,"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/beamforming","display_name":"Beamforming","score":0.8463084697723389},{"id":"https://openalex.org/keywords/multicast","display_name":"Multicast","score":0.7185567617416382},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7149637937545776},{"id":"https://openalex.org/keywords/degrees-of-freedom","display_name":"Degrees of freedom (physics and chemistry)","score":0.6024327874183655},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.5752755403518677},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5622544288635254},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.5326981544494629},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.484092116355896},{"id":"https://openalex.org/keywords/transmitter-power-output","display_name":"Transmitter power output","score":0.4657175540924072},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.45887649059295654},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.4522923529148102},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.4434676766395569},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.43524619936943054},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.3258405923843384},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.29405874013900757},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.2917247712612152},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.22576498985290527},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.20879539847373962},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.19177812337875366},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.09753316640853882}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.8463084697723389},{"id":"https://openalex.org/C32295351","wikidata":"https://www.wikidata.org/wiki/Q899288","display_name":"Multicast","level":2,"score":0.7185567617416382},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7149637937545776},{"id":"https://openalex.org/C208081375","wikidata":"https://www.wikidata.org/wiki/Q274502","display_name":"Degrees of freedom (physics and chemistry)","level":2,"score":0.6024327874183655},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.5752755403518677},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5622544288635254},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.5326981544494629},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.484092116355896},{"id":"https://openalex.org/C65422117","wikidata":"https://www.wikidata.org/wiki/Q358527","display_name":"Transmitter power output","level":4,"score":0.4657175540924072},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.45887649059295654},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.4522923529148102},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.4434676766395569},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.43524619936943054},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.3258405923843384},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.29405874013900757},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.2917247712612152},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.22576498985290527},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.20879539847373962},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.19177812337875366},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.09753316640853882},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/spawc.2019.8815596","is_oa":false,"landing_page_url":"https://doi.org/10.1109/spawc.2019.8815596","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)","raw_type":"proceedings-article"},{"id":"pmh:oai:iris.unimore.it:11380/1202713","is_oa":true,"landing_page_url":"http://hdl.handle.net/11380/1202713","pdf_url":null,"source":{"id":"https://openalex.org/S4306400718","display_name":"IRIS UNIMORE (University of Modena and Reggio Emilia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I122346577","host_organization_name":"University of Modena and Reggio Emilia","host_organization_lineage":["https://openalex.org/I122346577"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":{"id":"pmh:oai:iris.unimore.it:11380/1202713","is_oa":true,"landing_page_url":"http://hdl.handle.net/11380/1202713","pdf_url":null,"source":{"id":"https://openalex.org/S4306400718","display_name":"IRIS UNIMORE (University of Modena and Reggio Emilia)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I122346577","host_organization_name":"University of Modena and Reggio Emilia","host_organization_lineage":["https://openalex.org/I122346577"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferenceObject"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.8100000023841858,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1967236223","https://openalex.org/W1981044874","https://openalex.org/W2106248279","https://openalex.org/W2112912183","https://openalex.org/W2295566694","https://openalex.org/W2767375015","https://openalex.org/W2962794077","https://openalex.org/W2963664701","https://openalex.org/W3100546252","https://openalex.org/W6745790528"],"related_works":["https://openalex.org/W3087844490","https://openalex.org/W3090699061","https://openalex.org/W4387546583","https://openalex.org/W2051762234","https://openalex.org/W2131408743","https://openalex.org/W2055634632","https://openalex.org/W2787827467","https://openalex.org/W4367031485","https://openalex.org/W3114941719","https://openalex.org/W4386883085"],"abstract_inverted_index":{"We":[0],"study":[1],"downlink":[2],"beamforming":[3,36,136],"in":[4,25,86,99,123,168],"a":[5,9,18,41,48,54,105,121],"single-cell":[6],"network":[7],"with":[8,35,77,94,161],"multi-antenna":[10],"base":[11],"station":[12],"(BS)":[13],"serving":[14],"cache-enabled":[15],"users.":[16],"For":[17],"given":[19],"common":[20],"rate":[21,159,172],"of":[22,72,80,97,114,165,177,180],"the":[23,26,31,38,70,73,78,95,100,112,134,146,151,169,175],"files":[24],"system,":[27],"we":[28,103],"first":[29],"formulate":[30],"minimum":[32],"transmit":[33],"power":[34],"at":[37,155],"BS":[39],"as":[40],"non-convex":[42],"optimization":[43],"problem.":[44],"This":[45],"corresponds":[46],"to":[47,52,83,143],"multiple":[49],"multicast":[50],"problem,":[51],"which":[53,90],"stationary":[55],"solution":[56],"can":[57,117],"be":[58,118],"efficiently":[59],"obtained":[60],"through":[61,108,130],"successive":[62],"convex":[63],"approximation":[64],"(SCA).":[65],"It":[66,127],"is":[67,128,182],"observed":[68],"that":[69,110,116],"complexity":[71],"problem":[74],"grows":[75,92],"exponentially":[76,93],"number":[79,96,113,176],"subfiles":[81,115,147],"delivered":[82],"each":[84,87,124],"user":[85,122],"time":[88,125],"slot,":[89],"itself":[91],"users":[98],"system.":[101],"Therefore,":[102],"introduce":[104],"low-complexity":[106,153],"alternative":[107],"time-sharing":[109],"limits":[111],"received":[119],"by":[120],"slot.":[126],"shown":[129],"numerical":[131],"simulations":[132],"that,":[133],"reduced-complexity":[135],"scheme":[137,154],"has":[138],"minimal":[139],"performance":[140],"gap":[141],"compared":[142],"transmitting":[144],"all":[145,156],"jointly,":[148],"and":[149,158,167],"outperforms":[150],"state-of-the-art":[152],"SNR":[157],"values":[160],"sufficient":[162],"spatial":[163,178],"degrees":[164,179],"freedom,":[166],"high":[170],"SNR/high":[171],"regime":[173],"when":[174],"freedom":[181],"limited.":[183]},"counts_by_year":[{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":3}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}