{"id":"https://openalex.org/W3191756797","doi":"https://doi.org/10.1109/icc42927.2021.9500697","title":"Channel Estimation for Full-Duplex RIS-assisted HAPS Backhauling with Graph Attention Networks","display_name":"Channel Estimation for Full-Duplex RIS-assisted HAPS Backhauling with Graph Attention Networks","publication_year":2021,"publication_date":"2021-06-01","ids":{"openalex":"https://openalex.org/W3191756797","doi":"https://doi.org/10.1109/icc42927.2021.9500697","mag":"3191756797"},"language":"en","primary_location":{"id":"doi:10.1109/icc42927.2021.9500697","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc42927.2021.9500697","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICC 2021 - IEEE International Conference on Communications","raw_type":"proceedings-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/A5070088752","display_name":"K\u00fcr\u015fat Tekb\u0131y\u0131k","orcid":"https://orcid.org/0000-0002-2548-3286"},"institutions":[{"id":"https://openalex.org/I48912391","display_name":"Istanbul Technical University","ror":"https://ror.org/059636586","country_code":"TR","type":"education","lineage":["https://openalex.org/I48912391"]}],"countries":["TR"],"is_corresponding":true,"raw_author_name":"Kursat Tekbiyik","raw_affiliation_strings":["Department of Electronics and Communication Engineering, \u0130stanbul Technical University, \u0130stanbul, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, \u0130stanbul Technical University, \u0130stanbul, Turkey","institution_ids":["https://openalex.org/I48912391"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022600471","display_name":"G\u00fcne\u015f Karabulut Kurt","orcid":"https://orcid.org/0000-0001-7188-2619"},"institutions":[{"id":"https://openalex.org/I48912391","display_name":"Istanbul Technical University","ror":"https://ror.org/059636586","country_code":"TR","type":"education","lineage":["https://openalex.org/I48912391"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Gunes Karabulut Kurt","raw_affiliation_strings":["Department of Electronics and Communication Engineering, \u0130stanbul Technical University, \u0130stanbul, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, \u0130stanbul Technical University, \u0130stanbul, Turkey","institution_ids":["https://openalex.org/I48912391"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076730859","display_name":"Chongwen Huang","orcid":"https://orcid.org/0000-0001-8398-8437"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chongwen Huang","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001803438","display_name":"Ali R\u0131za Ekti","orcid":"https://orcid.org/0000-0003-0368-0374"},"institutions":[{"id":"https://openalex.org/I115600380","display_name":"Bal\u0131kesir University","ror":"https://ror.org/02tv7db43","country_code":"TR","type":"education","lineage":["https://openalex.org/I115600380"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Ali Riza Ekti","raw_affiliation_strings":["Department of Electrical\u2013Electronics Engineering, Bal\u0131kesir University, Bal\u0131kesir, Turkey"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical\u2013Electronics Engineering, Bal\u0131kesir University, Bal\u0131kesir, Turkey","institution_ids":["https://openalex.org/I115600380"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035446029","display_name":"Halim Yan\u0131k\u00f6mero\u011flu","orcid":"https://orcid.org/0000-0003-4776-9354"},"institutions":[{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Halim Yanikomeroglu","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ON, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ON, Canada","institution_ids":["https://openalex.org/I67031392"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5070088752"],"corresponding_institution_ids":["https://openalex.org/I48912391"],"apc_list":null,"apc_paid":null,"fwci":2.8468,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":{"value":0.91151891,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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/T11458","display_name":"Advanced Wireless Communication Technologies","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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9901000261306763,"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/T11133","display_name":"UAV Applications and Optimization","score":0.9894999861717224,"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/estimator","display_name":"Estimator","score":0.6869384050369263},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6756258010864258},{"id":"https://openalex.org/keywords/duplex","display_name":"Duplex (building)","score":0.58660888671875},{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.5301224589347839},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5115400552749634},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5086160898208618},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.36636921763420105},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1797894537448883},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.14562734961509705}],"concepts":[{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.6869384050369263},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6756258010864258},{"id":"https://openalex.org/C99611785","wikidata":"https://www.wikidata.org/wiki/Q6453233","display_name":"Duplex (building)","level":3,"score":0.58660888671875},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.5301224589347839},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5115400552749634},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5086160898208618},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.36636921763420105},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1797894537448883},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.14562734961509705},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C552990157","wikidata":"https://www.wikidata.org/wiki/Q7430","display_name":"DNA","level":2,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icc42927.2021.9500697","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icc42927.2021.9500697","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ICC 2021 - IEEE International Conference on Communications","raw_type":"proceedings-article"},{"id":"pmh:oai:polen.itu.edu.tr:11527/49283","is_oa":false,"landing_page_url":"https://hdl.handle.net/11527/49283","pdf_url":null,"source":{"id":"https://openalex.org/S4306400460","display_name":"Istanbul Technical University Academic Open Archive (Istanbul Technical University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I48912391","host_organization_name":"Istanbul Technical University","host_organization_lineage":["https://openalex.org/I48912391"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W1895280344","https://openalex.org/W2087752598","https://openalex.org/W2114791139","https://openalex.org/W2133564696","https://openalex.org/W2136513415","https://openalex.org/W2170503498","https://openalex.org/W2937693915","https://openalex.org/W2939208918","https://openalex.org/W2950077417","https://openalex.org/W2963175980","https://openalex.org/W2963360098","https://openalex.org/W2963858333","https://openalex.org/W2964308564","https://openalex.org/W2968810373","https://openalex.org/W3003686880","https://openalex.org/W3009959189","https://openalex.org/W3023531391","https://openalex.org/W3036016037","https://openalex.org/W3041878473","https://openalex.org/W3047031708","https://openalex.org/W3082791906","https://openalex.org/W3105487862","https://openalex.org/W3109910047","https://openalex.org/W3134059753","https://openalex.org/W3134746776","https://openalex.org/W3156195074","https://openalex.org/W4285377706","https://openalex.org/W4288365549","https://openalex.org/W4297733535","https://openalex.org/W6679434410","https://openalex.org/W6761665040","https://openalex.org/W6762113363","https://openalex.org/W6781199705","https://openalex.org/W6781836615","https://openalex.org/W6783036765"],"related_works":["https://openalex.org/W4287880334","https://openalex.org/W4366700029","https://openalex.org/W2092406346","https://openalex.org/W4285230481","https://openalex.org/W3125536267","https://openalex.org/W2274645452","https://openalex.org/W1999706086","https://openalex.org/W2521753262","https://openalex.org/W2372188366","https://openalex.org/W4280499399"],"abstract_inverted_index":{"In":[0,14],"this":[1],"paper,":[2],"graph":[3],"attention":[4],"network":[5],"(GAT)":[6],"is":[7,52,100,117,123],"firstly":[8],"utilized":[9],"for":[10],"the":[11,17,49,55,60,68,72,81,89,94,120,137],"channel":[12,77,96],"estimation.":[13,78],"accordance":[15],"with":[16],"6G":[18],"expectations,":[19],"we":[20],"consider":[21],"a":[22,35,39],"high-altitude":[23],"platform":[24],"station":[25],"(HAPS)":[26],"mounted":[27],"reconfigurable":[28],"intelligent":[29],"surface-assisted":[30],"two-way":[31,56],"communications":[32],"and":[33,38,128],"obtain":[34],"low":[36],"overhead":[37],"high":[40],"normalized":[41],"mean":[42],"square":[43,74],"error":[44],"performance.":[45],"The":[46,63],"performance":[47],"of":[48,88],"proposed":[50],"method":[51],"investigated":[53],"on":[54],"backhauling":[57],"link":[58],"over":[59],"RIS-integrated":[61],"HAPS.":[62],"simulation":[64],"results":[65],"denote":[66],"that":[67,119],"GAT":[69,85,121],"estimator":[70,122],"overperforms":[71],"least":[73],"in":[75,112,130],"full-duplex":[76,113],"Contrary":[79],"to":[80,103,125],"previously":[82],"introduced":[83],"methods,":[84],"at":[86],"one":[87],"nodes":[90],"can":[91],"separately":[92],"estimate":[93],"cascaded":[95],"coefficients.":[97],"Thus,":[98],"there":[99],"no":[101],"need":[102],"use":[104],"time":[105],"division":[106],"duplex":[107],"mode":[108],"during":[109],"pilot":[110],"signaling":[111],"communication.":[114],"Moreover,":[115],"it":[116],"shown":[118],"robust":[124],"hardware":[126],"imperfections":[127],"changes":[129],"small":[131],"scale":[132],"fading":[133],"characteristics":[134],"even":[135],"if":[136],"training":[138],"data":[139],"do":[140],"not":[141],"include":[142],"all":[143],"these":[144],"variations.":[145]},"counts_by_year":[{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":8},{"year":2021,"cited_by_count":5}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}
