{"id":"https://openalex.org/W2540344053","doi":"https://doi.org/10.1109/tvt.2017.2773506","title":"Energy-Efficient Heterogeneous Cellular Networks With Spectrum Underlay and Overlay Access","display_name":"Energy-Efficient Heterogeneous Cellular Networks With Spectrum Underlay and Overlay Access","publication_year":2017,"publication_date":"2017-11-14","ids":{"openalex":"https://openalex.org/W2540344053","doi":"https://doi.org/10.1109/tvt.2017.2773506","mag":"2540344053"},"language":"en","primary_location":{"id":"doi:10.1109/tvt.2017.2773506","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2017.2773506","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://research.manchester.ac.uk/en/publications/95d7699e-51cd-4cc5-a707-724ba669b0ab","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5089631680","display_name":"Jie Tang","orcid":"https://orcid.org/0000-0003-0619-0338"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jie Tang","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China","State Key Laboratory of Integrated Services Networks, Xidian University, Xian, China"],"raw_orcid":"https://orcid.org/0000-0003-0619-0338","affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China","institution_ids":["https://openalex.org/I90610280"]},{"raw_affiliation_string":"State Key Laboratory of Integrated Services Networks, Xidian University, Xian, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036412443","display_name":"Daniel K. C. So","orcid":"https://orcid.org/0000-0002-7642-1755"},"institutions":[{"id":"https://openalex.org/I28407311","display_name":"University of Manchester","ror":"https://ror.org/027m9bs27","country_code":"GB","type":"education","lineage":["https://openalex.org/I28407311"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Daniel K. C. So","raw_affiliation_strings":["School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K","institution_ids":["https://openalex.org/I28407311"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002248410","display_name":"Emad Alsusa","orcid":"https://orcid.org/0000-0002-7724-2636"},"institutions":[{"id":"https://openalex.org/I28407311","display_name":"University of Manchester","ror":"https://ror.org/027m9bs27","country_code":"GB","type":"education","lineage":["https://openalex.org/I28407311"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Emad Alsusa","raw_affiliation_strings":["School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K"],"raw_orcid":"https://orcid.org/0000-0002-7724-2636","affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K","institution_ids":["https://openalex.org/I28407311"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054743342","display_name":"Khairi Ashour Hamdi","orcid":"https://orcid.org/0000-0002-8060-5573"},"institutions":[{"id":"https://openalex.org/I28407311","display_name":"University of Manchester","ror":"https://ror.org/027m9bs27","country_code":"GB","type":"education","lineage":["https://openalex.org/I28407311"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Khairi Ashour Hamdi","raw_affiliation_strings":["School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K","institution_ids":["https://openalex.org/I28407311"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001019738","display_name":"Arman Shojaeifard","orcid":"https://orcid.org/0000-0003-0826-1996"},"institutions":[{"id":"https://openalex.org/I45129253","display_name":"University College London","ror":"https://ror.org/02jx3x895","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I45129253"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Arman Shojaeifard","raw_affiliation_strings":["Department of Electronic and Electrical Engineering, University College London, London, U.K"],"raw_orcid":"https://orcid.org/0000-0003-0826-1996","affiliations":[{"raw_affiliation_string":"Department of Electronic and Electrical Engineering, University College London, London, U.K","institution_ids":["https://openalex.org/I45129253"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011048761","display_name":"Kai\u2010Kit Wong","orcid":"https://orcid.org/0000-0001-7521-0078"},"institutions":[{"id":"https://openalex.org/I45129253","display_name":"University College London","ror":"https://ror.org/02jx3x895","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I45129253"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Kai-Kit Wong","raw_affiliation_strings":["Department of Electronic and Electrical Engineering, University College London, London, U.K"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic and Electrical Engineering, University College London, London, U.K","institution_ids":["https://openalex.org/I45129253"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.4636,"has_fulltext":false,"cited_by_count":35,"citation_normalized_percentile":{"value":0.89159207,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":"67","issue":"3","first_page":"2439","last_page":"2453"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"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":1.0,"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/T11409","display_name":"Advanced Wireless Network 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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9988999962806702,"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/underlay","display_name":"Underlay","score":0.8693473935127258},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.6664204597473145},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6406226754188538},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.6154468059539795},{"id":"https://openalex.org/keywords/subcarrier","display_name":"Subcarrier","score":0.5773978233337402},{"id":"https://openalex.org/keywords/resource-allocation","display_name":"Resource allocation","score":0.5613279938697815},{"id":"https://openalex.org/keywords/frequency-allocation","display_name":"Frequency allocation","score":0.5467419028282166},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5207210183143616},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.4968014061450958},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.48559755086898804},{"id":"https://openalex.org/keywords/cellular-network","display_name":"Cellular network","score":0.4801765978336334},{"id":"https://openalex.org/keywords/efficient-energy-use","display_name":"Efficient energy use","score":0.45943281054496765},{"id":"https://openalex.org/keywords/quality-of-service","display_name":"Quality of service","score":0.44747114181518555},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.42363011837005615},{"id":"https://openalex.org/keywords/bandwidth-allocation","display_name":"Bandwidth allocation","score":0.41973528265953064},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.4123307168483734},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.33899328112602234},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.33893752098083496},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.32303300499916077},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.288958877325058},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.2034984827041626},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.17525434494018555},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.16799396276474},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14304548501968384}],"concepts":[{"id":"https://openalex.org/C2777679929","wikidata":"https://www.wikidata.org/wiki/Q7883709","display_name":"Underlay","level":3,"score":0.8693473935127258},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.6664204597473145},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6406226754188538},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.6154468059539795},{"id":"https://openalex.org/C198329298","wikidata":"https://www.wikidata.org/wiki/Q586358","display_name":"Subcarrier","level":4,"score":0.5773978233337402},{"id":"https://openalex.org/C29202148","wikidata":"https://www.wikidata.org/wiki/Q287260","display_name":"Resource allocation","level":2,"score":0.5613279938697815},{"id":"https://openalex.org/C134579502","wikidata":"https://www.wikidata.org/wiki/Q1455619","display_name":"Frequency allocation","level":2,"score":0.5467419028282166},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5207210183143616},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.4968014061450958},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.48559755086898804},{"id":"https://openalex.org/C153646914","wikidata":"https://www.wikidata.org/wiki/Q535695","display_name":"Cellular network","level":2,"score":0.4801765978336334},{"id":"https://openalex.org/C2742236","wikidata":"https://www.wikidata.org/wiki/Q924713","display_name":"Efficient energy use","level":2,"score":0.45943281054496765},{"id":"https://openalex.org/C5119721","wikidata":"https://www.wikidata.org/wiki/Q220501","display_name":"Quality of service","level":2,"score":0.44747114181518555},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.42363011837005615},{"id":"https://openalex.org/C200157131","wikidata":"https://www.wikidata.org/wiki/Q4854763","display_name":"Bandwidth allocation","level":3,"score":0.41973528265953064},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.4123307168483734},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.33899328112602234},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.33893752098083496},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.32303300499916077},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.288958877325058},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2034984827041626},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.17525434494018555},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.16799396276474},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14304548501968384},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","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}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1109/tvt.2017.2773506","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2017.2773506","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","raw_type":"journal-article"},{"id":"pmh:oai:pure.atira.dk:openaire/95d7699e-51cd-4cc5-a707-724ba669b0ab","is_oa":true,"landing_page_url":"https://research.manchester.ac.uk/en/publications/95d7699e-51cd-4cc5-a707-724ba669b0ab","pdf_url":null,"source":{"id":"https://openalex.org/S4306400662","display_name":"Research Explorer (The University of Manchester)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I28407311","host_organization_name":"University of Manchester","host_organization_lineage":["https://openalex.org/I28407311"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Tang, J, So, D K C, Alsusa, E, Hamdi, K, Shojaeifard, A & Wong, K-K 2017, 'Energy-Efficient Heterogeneous Cellular Networks with Spectrum Underlay and Overlay Access', IEEE Transactions on Vehicular Technology, vol. 67, no. 3, pp. 2439-2453. https://doi.org/10.1109/TVT.2017.2773506","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:eprints.ucl.ac.uk.OAI2:10042595","is_oa":false,"landing_page_url":"https://discovery.ucl.ac.uk/id/eprint/10042595/","pdf_url":null,"source":{"id":"https://openalex.org/S4306400024","display_name":"UCL Discovery (University College London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I45129253","host_organization_name":"University College London","host_organization_lineage":["https://openalex.org/I45129253"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Transactions on Vehicular Technology , 67 (3) pp. 2439-2453. (2018)","raw_type":"Article"},{"id":"pmh:oai:pure.atira.dk:publications/95d7699e-51cd-4cc5-a707-724ba669b0ab","is_oa":false,"landing_page_url":"https://www.research.manchester.ac.uk/portal/en/publications/energyefficient-heterogeneous-cellular-networks-with-spectrum-underlay-and-overlay-access(95d7699e-51cd-4cc5-a707-724ba669b0ab).html","pdf_url":null,"source":{"id":"https://openalex.org/S4306400662","display_name":"Research Explorer (The University of Manchester)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I28407311","host_organization_name":"University of Manchester","host_organization_lineage":["https://openalex.org/I28407311"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":""}],"best_oa_location":{"id":"pmh:oai:pure.atira.dk:openaire/95d7699e-51cd-4cc5-a707-724ba669b0ab","is_oa":true,"landing_page_url":"https://research.manchester.ac.uk/en/publications/95d7699e-51cd-4cc5-a707-724ba669b0ab","pdf_url":null,"source":{"id":"https://openalex.org/S4306400662","display_name":"Research Explorer (The University of Manchester)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I28407311","host_organization_name":"University of Manchester","host_organization_lineage":["https://openalex.org/I28407311"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Tang, J, So, D K C, Alsusa, E, Hamdi, K, Shojaeifard, A & Wong, K-K 2017, 'Energy-Efficient Heterogeneous Cellular Networks with Spectrum Underlay and Overlay Access', IEEE Transactions on Vehicular Technology, vol. 67, no. 3, pp. 2439-2453. https://doi.org/10.1109/TVT.2017.2773506","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[{"score":0.5699999928474426,"display_name":"Decent work and economic growth","id":"https://metadata.un.org/sdg/8"}],"awards":[{"id":"https://openalex.org/G4514866660","display_name":null,"funder_award_id":"EP/N008219/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G602064714","display_name":"Unlocking Potentials of MIMO Full-duplex Radios for Heterogeneous Networks (UPFRONT)","funder_award_id":"EP/N008219/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G6606804152","display_name":null,"funder_award_id":"61601186","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7978818178","display_name":null,"funder_award_id":"1714050004216","funder_id":"https://openalex.org/F4320321921","funder_display_name":"Natural Science Foundation of Guangdong Province"},{"id":"https://openalex.org/G7985805409","display_name":null,"funder_award_id":"EP/J021768/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321921","display_name":"Natural Science Foundation of Guangdong Province","ror":null},{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":37,"referenced_works":["https://openalex.org/W174240283","https://openalex.org/W1822768964","https://openalex.org/W1981109871","https://openalex.org/W1983371306","https://openalex.org/W1994080576","https://openalex.org/W1994534328","https://openalex.org/W2002367890","https://openalex.org/W2003806850","https://openalex.org/W2014060493","https://openalex.org/W2034490776","https://openalex.org/W2045051323","https://openalex.org/W2063783961","https://openalex.org/W2067181210","https://openalex.org/W2077326445","https://openalex.org/W2084208304","https://openalex.org/W2095548369","https://openalex.org/W2100044493","https://openalex.org/W2105358352","https://openalex.org/W2112170521","https://openalex.org/W2116485279","https://openalex.org/W2121171713","https://openalex.org/W2123059049","https://openalex.org/W2136822103","https://openalex.org/W2140565473","https://openalex.org/W2144108568","https://openalex.org/W2145163533","https://openalex.org/W2150415860","https://openalex.org/W2154163615","https://openalex.org/W2164631123","https://openalex.org/W2165199726","https://openalex.org/W2256188983","https://openalex.org/W2344072545","https://openalex.org/W2515022002","https://openalex.org/W2547794760","https://openalex.org/W3105101694","https://openalex.org/W4250589301","https://openalex.org/W6726362037"],"related_works":["https://openalex.org/W3117207195","https://openalex.org/W2029275898","https://openalex.org/W2796093738","https://openalex.org/W2106576529","https://openalex.org/W2157275108","https://openalex.org/W3111557463","https://openalex.org/W2952703527","https://openalex.org/W2148574591","https://openalex.org/W1980878151","https://openalex.org/W4246471690"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,70,120],"provide":[4,78],"joint":[5],"subcarrier":[6],"assignment":[7],"and":[8,50,61,77,92,115,135,153,178],"power":[9],"allocation":[10,75,125,184],"schemes":[11,185],"for":[12],"quality-of-service-constrained":[13],"energy-efficiency":[14],"(EE)":[15],"optimization":[16,52,144],"in":[17],"the":[18,42,58,64,67,96,99,129,143,149,154,161,167,175,181,188],"downlink":[19],"of":[20,57,66,84,131,163],"an":[21],"orthogonal":[22],"frequency":[23],"division":[24],"multiple":[25],"access":[26,106,134],"based":[27,127],"two-tier":[28],"heterogeneous":[29],"cellular":[30],"network.":[31],"Considering":[32],"underlay":[33,105],"transmission,":[34],"where":[35,148],"spectrum":[36,104,132,169],"efficiency":[37,137],"(SE)":[38],"is":[39,146,157,170],"fully":[40],"exploited,":[41],"EE":[43,68,109,162,190],"solution":[44,81],"involves":[45],"tackling":[46],"a":[47,72,79,122],"complex":[48],"mixed-combinatorial":[49],"nonconvex":[51],"problem.":[53],"With":[54],"appropriate":[55],"decomposition":[56],"original":[59],"problem":[60],"leveraging":[62],"on":[63,128],"quasi-concavity":[65],"function,":[69],"propose":[71],"dual-layer":[73],"resource":[74,124,136,183],"approach":[76,126,187],"complete":[80],"using":[82],"difference":[83],"two":[85],"concave":[86],"functions":[87],"approximation,":[88,91],"successive":[89],"convex":[90],"gradient-search":[93],"method.":[94],"On":[95],"other":[97],"hand,":[98],"inherent":[100],"intertier":[101],"interference":[102],"from":[103],"may":[107],"degrade":[108],"particularly":[110],"under":[111,196],"dense":[112],"small-cell":[113],"deployment":[114],"large":[116],"bandwidth":[117,156],"utilization.":[118],"Therefore,":[119],"develop":[121],"novel":[123],"concepts":[130],"overlay":[133],"(RE)":[138],"(normalized":[139],"EE-SE":[140],"tradeoff).":[141],"Specifically,":[142],"procedure":[145],"separated":[147],"macro-cell":[150],"optimal":[151,189],"RE":[152],"corresponding":[155],"first":[158],"determined,":[159],"then":[160],"small":[164],"cells":[165],"utilizing":[166],"remaining":[168],"maximized.":[171],"Simulation":[172],"results":[173],"confirm":[174],"theoretical":[176],"findings":[177],"demonstrate":[179],"that":[180],"proposed":[182],"can":[186],"with":[191],"each":[192],"strategy":[193],"being":[194],"superior":[195],"certain":[197],"system":[198],"settings.":[199]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":10},{"year":2019,"cited_by_count":7},{"year":2018,"cited_by_count":5}],"updated_date":"2026-07-19T07:52:34.831488","created_date":"2025-10-10T00:00:00"}