{"id":"https://openalex.org/W4408182696","doi":"https://doi.org/10.1109/tcomm.2025.3548797","title":"Hybrid-RIS Empowered UAV-Assisted ISAC Systems: Transfer Learning-Based DRL","display_name":"Hybrid-RIS Empowered UAV-Assisted ISAC Systems: Transfer Learning-Based DRL","publication_year":2025,"publication_date":"2025-03-06","ids":{"openalex":"https://openalex.org/W4408182696","doi":"https://doi.org/10.1109/tcomm.2025.3548797"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2025.3548797","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3548797","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/A5075440618","display_name":"Prajwalita Saikia","orcid":"https://orcid.org/0000-0001-8469-8263"},"institutions":[{"id":"https://openalex.org/I142974352","display_name":"National Sun Yat-sen University","ror":"https://ror.org/00mjawt10","country_code":"TW","type":"education","lineage":["https://openalex.org/I142974352"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Prajwalita Saikia","raw_affiliation_strings":["Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan"],"raw_orcid":"https://orcid.org/0000-0001-8469-8263","affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan","institution_ids":["https://openalex.org/I142974352"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059730531","display_name":"Anand Jee","orcid":"https://orcid.org/0000-0001-6714-332X"},"institutions":[{"id":"https://openalex.org/I68891433","display_name":"Indian Institute of Technology Delhi","ror":"https://ror.org/049tgcd06","country_code":"IN","type":"education","lineage":["https://openalex.org/I68891433"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Anand Jee","raw_affiliation_strings":["Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India"],"raw_orcid":"https://orcid.org/0000-0001-6714-332X","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India","institution_ids":["https://openalex.org/I68891433"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071647281","display_name":"Keshav Singh","orcid":"https://orcid.org/0000-0001-9028-4518"},"institutions":[{"id":"https://openalex.org/I142974352","display_name":"National Sun Yat-sen University","ror":"https://ror.org/00mjawt10","country_code":"TW","type":"education","lineage":["https://openalex.org/I142974352"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Keshav Singh","raw_affiliation_strings":["Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan"],"raw_orcid":"https://orcid.org/0000-0001-9028-4518","affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan","institution_ids":["https://openalex.org/I142974352"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090028379","display_name":"Wan-Jen Huang","orcid":"https://orcid.org/0000-0002-3423-0408"},"institutions":[{"id":"https://openalex.org/I142974352","display_name":"National Sun Yat-sen University","ror":"https://ror.org/00mjawt10","country_code":"TW","type":"education","lineage":["https://openalex.org/I142974352"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Wan-Jen Huang","raw_affiliation_strings":["Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan"],"raw_orcid":"https://orcid.org/0000-0002-3423-0408","affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan","institution_ids":["https://openalex.org/I142974352"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083860419","display_name":"Alexandros\u2013Apostolos A. Boulogeorgos","orcid":"https://orcid.org/0000-0001-8345-0872"},"institutions":[{"id":"https://openalex.org/I89506807","display_name":"University of Western Macedonia","ror":"https://ror.org/00a5pe906","country_code":"GR","type":"education","lineage":["https://openalex.org/I89506807"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Alexandros-Apostolos A. Boulogeorgos","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece"],"raw_orcid":"https://orcid.org/0000-0001-8345-0872","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Western Macedonia, Kozani, Greece","institution_ids":["https://openalex.org/I89506807"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5020442416","display_name":"Theodoros A. Tsiftsis","orcid":"https://orcid.org/0000-0002-4856-3932"},"institutions":[{"id":"https://openalex.org/I145722265","display_name":"University of Thessaly","ror":"https://ror.org/04v4g9h31","country_code":"GR","type":"education","lineage":["https://openalex.org/I145722265"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Theodoros A. Tsiftsis","raw_affiliation_strings":["Department of Informatics and Telecommunications, University of Thessaly, Lamia, Greece"],"raw_orcid":"https://orcid.org/0000-0002-4856-3932","affiliations":[{"raw_affiliation_string":"Department of Informatics and Telecommunications, University of Thessaly, Lamia, Greece","institution_ids":["https://openalex.org/I145722265"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":8.3015,"has_fulltext":false,"cited_by_count":19,"citation_normalized_percentile":{"value":0.97950993,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"73","issue":"9","first_page":"8314","last_page":"8329"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12702","display_name":"Brain Tumor Detection and Classification","score":0.9787999987602234,"subfield":{"id":"https://openalex.org/subfields/2808","display_name":"Neurology"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T12702","display_name":"Brain Tumor Detection and Classification","score":0.9787999987602234,"subfield":{"id":"https://openalex.org/subfields/2808","display_name":"Neurology"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12676","display_name":"Machine Learning and ELM","score":0.9635000228881836,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T11133","display_name":"UAV Applications and Optimization","score":0.9394999742507935,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/computer-science","display_name":"Computer science","score":0.5579344630241394},{"id":"https://openalex.org/keywords/transfer-of-learning","display_name":"Transfer of learning","score":0.531378448009491},{"id":"https://openalex.org/keywords/computer-architecture","display_name":"Computer architecture","score":0.36341917514801025},{"id":"https://openalex.org/keywords/systems-engineering","display_name":"Systems engineering","score":0.359176903963089},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3513021767139435},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.34067970514297485},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.15321245789527893}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5579344630241394},{"id":"https://openalex.org/C150899416","wikidata":"https://www.wikidata.org/wiki/Q1820378","display_name":"Transfer of learning","level":2,"score":0.531378448009491},{"id":"https://openalex.org/C118524514","wikidata":"https://www.wikidata.org/wiki/Q173212","display_name":"Computer architecture","level":1,"score":0.36341917514801025},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.359176903963089},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3513021767139435},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.34067970514297485},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.15321245789527893}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2025.3548797","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3548797","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":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.550000011920929}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":67,"referenced_works":["https://openalex.org/W2055543655","https://openalex.org/W2112261687","https://openalex.org/W2163754837","https://openalex.org/W2800076918","https://openalex.org/W2885371450","https://openalex.org/W2898035736","https://openalex.org/W2958079678","https://openalex.org/W3006143078","https://openalex.org/W3034281970","https://openalex.org/W3034653302","https://openalex.org/W3038047043","https://openalex.org/W3039402952","https://openalex.org/W3042391361","https://openalex.org/W3094327823","https://openalex.org/W3109039904","https://openalex.org/W3113799846","https://openalex.org/W3129486236","https://openalex.org/W3134888006","https://openalex.org/W3144422272","https://openalex.org/W3146023480","https://openalex.org/W3148198191","https://openalex.org/W3152632745","https://openalex.org/W3158395156","https://openalex.org/W3178081691","https://openalex.org/W3180558487","https://openalex.org/W3189642105","https://openalex.org/W3198743033","https://openalex.org/W3209801506","https://openalex.org/W3210664051","https://openalex.org/W3213070675","https://openalex.org/W3213402248","https://openalex.org/W3213706254","https://openalex.org/W4205224143","https://openalex.org/W4205465442","https://openalex.org/W4205615831","https://openalex.org/W4210397953","https://openalex.org/W4214916244","https://openalex.org/W4225086786","https://openalex.org/W4225737845","https://openalex.org/W4226061238","https://openalex.org/W4226165103","https://openalex.org/W4285237044","https://openalex.org/W4285410860","https://openalex.org/W4288388721","https://openalex.org/W4292967238","https://openalex.org/W4292981572","https://openalex.org/W4309759479","https://openalex.org/W4312330321","https://openalex.org/W4313139864","https://openalex.org/W4313172227","https://openalex.org/W4313428265","https://openalex.org/W4315474354","https://openalex.org/W4315629518","https://openalex.org/W4320018439","https://openalex.org/W4321021057","https://openalex.org/W4361772042","https://openalex.org/W4376478335","https://openalex.org/W4376479133","https://openalex.org/W4382998721","https://openalex.org/W4385413464","https://openalex.org/W4386363095","https://openalex.org/W4386634615","https://openalex.org/W4389925691","https://openalex.org/W4393171267","https://openalex.org/W4394744448","https://openalex.org/W4399619707","https://openalex.org/W4400905022"],"related_works":["https://openalex.org/W3201126466","https://openalex.org/W4282827391","https://openalex.org/W4405541655","https://openalex.org/W4386828785","https://openalex.org/W3165580226","https://openalex.org/W3135401135","https://openalex.org/W2886688859","https://openalex.org/W3133164560","https://openalex.org/W3041001745","https://openalex.org/W4224526119"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,79,111,141,154],"consider":[4],"a":[5,46,81,120,132],"novel":[6],"hybrid":[7],"reconfigurable":[8],"intelligent":[9],"surface":[10],"(HRIS)":[11],"consisting":[12],"of":[13,145,168,178,188,199],"active":[14,62],"as":[15,17],"well":[16],"passive":[18,64],"reflecting":[19],"elements":[20],"mounted":[21],"on":[22],"unmanned":[23],"aerial":[24],"vehicle":[25],"(UAV).":[26],"The":[27,166],"aim":[28],"is":[29,135],"to":[30,58,93,107,123,138],"improve":[31],"air-to-ground":[32],"communication":[33,76,201],"by":[34],"assisting":[35],"multiple":[36],"users,":[37],"while":[38,99],"detecting":[39],"several":[40],"low":[41],"mobility":[42],"targets.":[43],"We":[44],"formulate":[45],"sum-rate":[47],"optimization":[48,115,128],"problem":[49,129],"that":[50,118,134],"accounts":[51],"for":[52,72,105],"statistical":[53],"channel":[54,161],"estimation":[55],"errors":[56],"(SCEEs)":[57],"concurrently":[59],"fine-tune":[60],"both":[61,200],"and":[63,69,75,130,174,202],"phase-shift":[65],"matrices,":[66],"UAV":[67,192],"trajectory,":[68],"transmit":[70,108],"beamformer":[71],"integrated":[73],"sensing":[74,203],"(ISAC).":[77],"Subsequently,":[78],"introduce":[80],"transfer":[82],"learning":[83],"based":[84],"approach":[85],"combining":[86],"with":[87,159],"deep":[88],"deterministic":[89],"policy":[90],"gradient":[91],"(DDPG)":[92],"enhance":[94],"the":[95,101,125,143,146,157,171,176,179,183,186,197],"overall":[96],"data":[97],"rate":[98],"minimizing":[100],"time":[102],"it":[103],"takes":[104],"users":[106],"data.":[109],"Additionally,":[110,182],"present":[112],"an":[113],"alternating":[114],"(AO)":[116],"algorithm":[117],"employs":[119],"repetitive":[121],"method":[122],"address":[124],"combinatorial":[126],"nonconvex":[127],"offers":[131],"solution":[133],"very":[136],"close":[137],"optimal.":[139],"Finally,":[140],"showcase":[142],"superiority":[144],"proposed":[147,180],"scheme":[148],"through":[149],"Monte":[150],"Carlo":[151],"simulations.":[152],"Also,":[153],"have":[155],"compared":[156],"performance":[158],"perfect":[160],"state":[162],"information":[163],"(CSI)":[164],"counterpart.":[165],"outcomes":[167],"simulations":[169],"confirm":[170],"theoretical":[172],"analysis":[173],"demonstrate":[175],"efficiency":[177],"framework.":[181],"results":[184],"reveal":[185],"advantages":[187],"incorporating":[189],"HRIS":[190],"aided":[191],"assisted":[193],"ISAC":[194],"in":[195],"improving":[196],"quality":[198],"performance.":[204]},"counts_by_year":[{"year":2026,"cited_by_count":10},{"year":2025,"cited_by_count":9}],"updated_date":"2026-07-15T18:14:33.161393","created_date":"2025-10-10T00:00:00"}
