{"id":"https://openalex.org/W4360995371","doi":"https://doi.org/10.1109/tsp.2023.3260561","title":"Joint Optimization of Transmit Beamforming and Base Station Cache Allocation in Multi-Cell C-RAN","display_name":"Joint Optimization of Transmit Beamforming and Base Station Cache Allocation in Multi-Cell C-RAN","publication_year":2023,"publication_date":"2023-01-01","ids":{"openalex":"https://openalex.org/W4360995371","doi":"https://doi.org/10.1109/tsp.2023.3260561"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2023.3260561","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/tsp.2023.3260561","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Signal Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://ontariotechu.scholaris.ca/bitstreams/30a6ef53-2e4d-448f-b3fd-b8f70905829c/download","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5005260417","display_name":"Mehran Esmaeili","orcid":"https://orcid.org/0000-0002-4222-1376"},"institutions":[{"id":"https://openalex.org/I39470171","display_name":"Ontario Tech University","ror":"https://ror.org/016zre027","country_code":"CA","type":"education","lineage":["https://openalex.org/I39470171"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Mehran Esmaeili","raw_affiliation_strings":["Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada","institution_ids":["https://openalex.org/I39470171"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049043069","display_name":"Shahram Shahbazpanahi","orcid":"https://orcid.org/0000-0001-8914-5481"},"institutions":[{"id":"https://openalex.org/I39470171","display_name":"Ontario Tech University","ror":"https://ror.org/016zre027","country_code":"CA","type":"education","lineage":["https://openalex.org/I39470171"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Shahram Shahbazpanahi","raw_affiliation_strings":["Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada","institution_ids":["https://openalex.org/I39470171"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035819120","display_name":"Min Dong","orcid":"https://orcid.org/0000-0002-7223-8865"},"institutions":[{"id":"https://openalex.org/I39470171","display_name":"Ontario Tech University","ror":"https://ror.org/016zre027","country_code":"CA","type":"education","lineage":["https://openalex.org/I39470171"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Min Dong","raw_affiliation_strings":["Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada"],"affiliations":[{"raw_affiliation_string":"Department of Electrical, Computer, and Software Engineering, Ontario Tech University, Oshawa, ON, Canada","institution_ids":["https://openalex.org/I39470171"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5005260417"],"corresponding_institution_ids":["https://openalex.org/I39470171"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.02025801,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"71","issue":null,"first_page":"1755","last_page":"1769"},"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":0.9997000098228455,"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/T11478","display_name":"Caching and Content Delivery","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/beamforming","display_name":"Beamforming","score":0.845683217048645},{"id":"https://openalex.org/keywords/cache","display_name":"Cache","score":0.7760818004608154},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7521583437919617},{"id":"https://openalex.org/keywords/backhaul","display_name":"Backhaul (telecommunications)","score":0.6600696444511414},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.6302303075790405},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.6164987087249756},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.4660649597644806},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4626885652542114},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.45898282527923584},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3208048939704895},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2315465211868286},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.16023200750350952},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1535395085811615},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.11176532506942749}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.845683217048645},{"id":"https://openalex.org/C115537543","wikidata":"https://www.wikidata.org/wiki/Q165596","display_name":"Cache","level":2,"score":0.7760818004608154},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7521583437919617},{"id":"https://openalex.org/C103760667","wikidata":"https://www.wikidata.org/wiki/Q798444","display_name":"Backhaul (telecommunications)","level":3,"score":0.6600696444511414},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.6302303075790405},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.6164987087249756},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.4660649597644806},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4626885652542114},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.45898282527923584},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3208048939704895},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2315465211868286},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.16023200750350952},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1535395085811615},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.11176532506942749},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tsp.2023.3260561","is_oa":false,"landing_page_url":"http://dx.doi.org/10.1109/tsp.2023.3260561","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Signal Processing","raw_type":"journal-article"},{"id":"pmh:oai:ir.library.dc-uoit.ca:10155/1392","is_oa":true,"landing_page_url":"http://hdl.handle.net/10155/1392","pdf_url":"https://ontariotechu.scholaris.ca/bitstreams/30a6ef53-2e4d-448f-b3fd-b8f70905829c/download","source":{"id":"https://openalex.org/S4306401586","display_name":"e-scholar@UOIT (University of Ontario Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I39470171","host_organization_name":"Ontario Tech University","host_organization_lineage":["https://openalex.org/I39470171"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"}],"best_oa_location":{"id":"pmh:oai:ir.library.dc-uoit.ca:10155/1392","is_oa":true,"landing_page_url":"http://hdl.handle.net/10155/1392","pdf_url":"https://ontariotechu.scholaris.ca/bitstreams/30a6ef53-2e4d-448f-b3fd-b8f70905829c/download","source":{"id":"https://openalex.org/S4306401586","display_name":"e-scholar@UOIT (University of Ontario Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I39470171","host_organization_name":"Ontario Tech University","host_organization_lineage":["https://openalex.org/I39470171"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320334593","display_name":"Natural Sciences and Engineering Research Council of Canada","ror":"https://ror.org/01h531d29"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4360995371.pdf","grobid_xml":"https://content.openalex.org/works/W4360995371.grobid-xml"},"referenced_works_count":23,"referenced_works":["https://openalex.org/W1569990960","https://openalex.org/W1972205959","https://openalex.org/W1972738071","https://openalex.org/W2018552671","https://openalex.org/W2120445834","https://openalex.org/W2122962803","https://openalex.org/W2140260238","https://openalex.org/W2164549277","https://openalex.org/W2226827734","https://openalex.org/W2258533367","https://openalex.org/W2511268924","https://openalex.org/W2526264695","https://openalex.org/W2540147203","https://openalex.org/W2579498866","https://openalex.org/W2604281498","https://openalex.org/W2624989916","https://openalex.org/W2877508583","https://openalex.org/W2949864303","https://openalex.org/W2962718958","https://openalex.org/W2962750265","https://openalex.org/W3003198812","https://openalex.org/W3034677867","https://openalex.org/W6695707431"],"related_works":["https://openalex.org/W2765089333","https://openalex.org/W4297311468","https://openalex.org/W2963440157","https://openalex.org/W2548963335","https://openalex.org/W2898650565","https://openalex.org/W2915882743","https://openalex.org/W2159941915","https://openalex.org/W4236087151","https://openalex.org/W4302353319","https://openalex.org/W2761543104"],"abstract_inverted_index":{"This":[0],"paper":[1],"studies":[2],"a":[3,12,39,74,79,162,197],"downlink":[4],"cloud":[5],"radio":[6],"access":[7],"network":[8],"(C-RAN)":[9],"consisting":[10],"of":[11,21,46,59,69,85,94,116,145,184,217,229],"centralized":[13],"processor":[14],"(CP)":[15],"and":[16,78],"multiple":[17],"cells":[18],"each":[19],"one":[20,24,88],"which":[22],"has":[23],"cache-enabled":[25],"base":[26],"station":[27],"(BS)":[28],"connected":[29],"to":[30,43,50,90,96,112,140,158,161,169,175,220],"the":[31,47,51,55,60,66,86,97,100,105,124,132,151,170,177,182,185,192,215,227],"CP":[32],"through":[33,119],"wireless":[34],"backhaul":[35],"links.":[36],"In":[37],"such":[38,53],"network,":[40],"we":[41,72,167,189],"aim":[42],"determine":[44],"sizes":[45],"cache":[48,80,121,125,193,232,242],"allocated":[49],"BSs":[52,98],"that":[54,131,191,214],"long-term":[56,114],"delivery":[57,117],"time":[58,103,118],"available":[61],"files":[62,95],"is":[63,89,196,224,245],"minimized.":[64],"Considering":[65],"two-stage":[67],"nature":[68],"this":[70,149],"problem,":[71,188],"formulate":[73],"beamforming":[75,106,152,173,178,186,223],"optimization":[76,153,179,187,199,209],"problem":[77,110,154,195],"allocation":[81,122,126,194,233,244],"problem.":[82,180],"The":[83,108],"purpose":[84],"first":[87],"deliver":[91],"un-cached":[92],"portions":[93],"in":[99],"shortest":[101],"possible":[102],"during":[104,123],"stage.":[107,127],"second":[109],"aims":[111],"minimize":[113],"expectation":[115],"optimal":[120],"We":[128],"rigorously":[129],"prove":[130,190],"<italic":[133],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[134],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">time-varying":[135],"beamformers</i>":[136],"can":[137,203],"be":[138,141,159,204],"assumed":[139],"piece-wise":[142],"constant":[143],"functions":[144],"time.":[146],"Based":[147],"on":[148],"finding,":[150],"does":[155],"not":[156],"appear":[157],"amenable":[160],"computationally":[163],"efficient":[164],"solution.":[165],"Hence,":[166],"resort":[168],"zero-forcing":[171],"(ZF)":[172],"approach":[174],"tackle":[176],"Using":[181],"results":[183,212],"convex":[198,208],"problem;":[200],"hence":[201],"it":[202],"solved":[205],"by":[206],"any":[207],"solvers.":[210],"Simulation":[211],"show":[213],"loss":[216],"optimality":[218],"due":[219],"adopting":[221],"ZF":[222],"negligible.":[225],"Moreover,":[226],"superiority":[228],"our":[230],"proposed":[231],"scheme":[234],"over":[235],"several":[236],"other":[237],"heuristic":[238],"schemes":[239],"including":[240],"proportional":[241],"size":[243],"shown.":[246]},"counts_by_year":[],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}