{"id":"https://openalex.org/W7125957205","doi":"https://doi.org/10.1109/tcomm.2026.3658404","title":"Positioning-Aided Channel Estimation for Multi-LEO Satellite Cooperative Beamforming","display_name":"Positioning-Aided Channel Estimation for Multi-LEO Satellite Cooperative Beamforming","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7125957205","doi":"https://doi.org/10.1109/tcomm.2026.3658404"},"language":null,"primary_location":{"id":"doi:10.1109/tcomm.2026.3658404","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2026.3658404","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/A5124124807","display_name":"Yuchen Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I71920554","display_name":"King Abdullah University of Science and Technology","ror":"https://ror.org/01q3tbs38","country_code":"SA","type":"education","lineage":["https://openalex.org/I71920554"]}],"countries":["SA"],"is_corresponding":true,"raw_author_name":"Yuchen Zhang","raw_affiliation_strings":["Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia"],"raw_orcid":"https://orcid.org/0000-0002-3153-4000","affiliations":[{"raw_affiliation_string":"Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia","institution_ids":["https://openalex.org/I71920554"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063198174","display_name":"Pinjun Zheng","orcid":"https://orcid.org/0000-0001-5362-7649"},"institutions":[{"id":"https://openalex.org/I141945490","display_name":"University of British Columbia","ror":"https://ror.org/03rmrcq20","country_code":"CA","type":"education","lineage":["https://openalex.org/I141945490"]},{"id":"https://openalex.org/I4405260628","display_name":"University of British Columbia, Okanagan Campus","ror":"https://ror.org/04241wz75","country_code":"CA","type":"education","lineage":["https://openalex.org/I141945490","https://openalex.org/I4405260628"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Pinjun Zheng","raw_affiliation_strings":["School of Engineering, The University of British Columbia, Kelowna, BC, Canada"],"raw_orcid":"https://orcid.org/0000-0001-5362-7649","affiliations":[{"raw_affiliation_string":"School of Engineering, The University of British Columbia, Kelowna, BC, Canada","institution_ids":["https://openalex.org/I141945490","https://openalex.org/I4405260628"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124100826","display_name":"Jie Ma","orcid":null},"institutions":[{"id":"https://openalex.org/I71920554","display_name":"King Abdullah University of Science and Technology","ror":"https://ror.org/01q3tbs38","country_code":"SA","type":"education","lineage":["https://openalex.org/I71920554"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Jie Ma","raw_affiliation_strings":["Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia"],"raw_orcid":"https://orcid.org/0009-0006-3220-3330","affiliations":[{"raw_affiliation_string":"Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia","institution_ids":["https://openalex.org/I71920554"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033860704","display_name":"Henk Wymeersch","orcid":"https://orcid.org/0000-0002-1298-6159"},"institutions":[{"id":"https://openalex.org/I66862912","display_name":"Chalmers University of Technology","ror":"https://ror.org/040wg7k59","country_code":"SE","type":"education","lineage":["https://openalex.org/I66862912"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Henk Wymeersch","raw_affiliation_strings":["Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden"],"raw_orcid":"https://orcid.org/0000-0002-1298-6159","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden","institution_ids":["https://openalex.org/I66862912"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5123187500","display_name":"Tareq Y. Al-Naffouri","orcid":null},"institutions":[{"id":"https://openalex.org/I71920554","display_name":"King Abdullah University of Science and Technology","ror":"https://ror.org/01q3tbs38","country_code":"SA","type":"education","lineage":["https://openalex.org/I71920554"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Tareq Y. Al-Naffouri","raw_affiliation_strings":["Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia"],"raw_orcid":"https://orcid.org/0000-0001-6955-4720","affiliations":[{"raw_affiliation_string":"Electrical and Computer Engineering Program, Division of Computer, Electrical and Mathematical Sciences and Engineering (CEMSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia","institution_ids":["https://openalex.org/I71920554"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5124124807"],"corresponding_institution_ids":["https://openalex.org/I71920554"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1737477,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"74","issue":null,"first_page":"3888","last_page":"3903"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.6342999935150146,"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"}},"topics":[{"id":"https://openalex.org/T12042","display_name":"Satellite Communication Systems","score":0.6342999935150146,"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"}},{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.29840001463890076,"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"}},{"id":"https://openalex.org/T12079","display_name":"IoT Networks and Protocols","score":0.015399999916553497,"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/telecommunications-link","display_name":"Telecommunications link","score":0.929099977016449},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.6633999943733215},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6438000202178955},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.5566999912261963},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5425999760627747},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5422999858856201},{"id":"https://openalex.org/keywords/communications-satellite","display_name":"Communications satellite","score":0.49790000915527344}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.929099977016449},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.6633999943733215},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6632000207901001},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6438000202178955},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.5566999912261963},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5425999760627747},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5422999858856201},{"id":"https://openalex.org/C121308736","wikidata":"https://www.wikidata.org/wiki/Q149918","display_name":"Communications satellite","level":3,"score":0.49790000915527344},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4433000087738037},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3910999894142151},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3321000039577484},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.3273000121116638},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.31859999895095825},{"id":"https://openalex.org/C3018325918","wikidata":"https://www.wikidata.org/wiki/Q663611","display_name":"Low earth orbit","level":3,"score":0.30059999227523804},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.2955999970436096},{"id":"https://openalex.org/C2778027091","wikidata":"https://www.wikidata.org/wiki/Q25346003","display_name":"Satellite system","level":4,"score":0.28690001368522644},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.25850000977516174},{"id":"https://openalex.org/C157764524","wikidata":"https://www.wikidata.org/wiki/Q1383412","display_name":"Throughput","level":3,"score":0.2522999942302704},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.2500999867916107}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2026.3658404","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2026.3658404","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":[{"id":"https://metadata.un.org/sdg/17","display_name":"Partnerships for the goals","score":0.5256404280662537}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":53,"referenced_works":["https://openalex.org/W1970830346","https://openalex.org/W2098814788","https://openalex.org/W2099512510","https://openalex.org/W2117206394","https://openalex.org/W2142020225","https://openalex.org/W2165611048","https://openalex.org/W2759547991","https://openalex.org/W2802772719","https://openalex.org/W2898641569","https://openalex.org/W2964198810","https://openalex.org/W3099436221","https://openalex.org/W3120117232","https://openalex.org/W3189778133","https://openalex.org/W3192113790","https://openalex.org/W4226424807","https://openalex.org/W4283024491","https://openalex.org/W4288062148","https://openalex.org/W4293147490","https://openalex.org/W4295935103","https://openalex.org/W4312971400","https://openalex.org/W4323519588","https://openalex.org/W4323914235","https://openalex.org/W4362715001","https://openalex.org/W4365130416","https://openalex.org/W4386883068","https://openalex.org/W4387717654","https://openalex.org/W4388838028","https://openalex.org/W4389160300","https://openalex.org/W4389606845","https://openalex.org/W4390533235","https://openalex.org/W4390659069","https://openalex.org/W4390691205","https://openalex.org/W4391952652","https://openalex.org/W4392781946","https://openalex.org/W4394744522","https://openalex.org/W4394939036","https://openalex.org/W4395028049","https://openalex.org/W4399311128","https://openalex.org/W4400525372","https://openalex.org/W4402473528","https://openalex.org/W4403758813","https://openalex.org/W4404238680","https://openalex.org/W4404576599","https://openalex.org/W4405180645","https://openalex.org/W4408326124","https://openalex.org/W4410153330","https://openalex.org/W4410226805","https://openalex.org/W4411640190","https://openalex.org/W4414122735","https://openalex.org/W4415883014","https://openalex.org/W4416069674","https://openalex.org/W7114907119","https://openalex.org/W7125924862"],"related_works":[],"abstract_inverted_index":{"We":[0],"investigate":[1],"a":[2,36,125],"multi-low":[3],"Earth":[4],"orbit":[5],"(LEO)":[6],"satellite":[7,32,57,136],"system":[8],"that":[9,133],"simultaneously":[10],"provides":[11],"positioning":[12,69,93,105,158],"and":[13,51,79,117,144,166],"communication":[14,118],"services":[15],"to":[16],"terrestrial":[17],"user":[18],"terminals.":[19],"To":[20,111],"address":[21,112],"the":[22,44,60,102,113,148,151],"challenges":[23],"of":[24,48,104,120,150],"accurately":[25],"acquiring":[26],"channel":[27,40,52,97,164],"state":[28],"information":[29,89],"in":[30,55,101,154],"LEO":[31,56],"systems,":[33],"we":[34,66,84,123],"propose":[35],"novel":[37],"two-timescale":[38],"positioning-aided":[39],"estimation":[41,98],"framework,":[42],"exploiting":[43],"distinct":[45],"variation":[46],"rates":[47,119],"position-related":[49],"parameters":[50],"gains":[53],"inherent":[54],"channels.":[58],"Using":[59],"misspecified":[61],"Cram\u00e9r-Rao":[62],"bound":[63],"(MCRB)":[64],"theory,":[65],"systematically":[67],"analyze":[68],"performance":[70],"under":[71,159],"practical":[72,160],"imperfections,":[73,161],"such":[74],"as":[75],"inter-satellite":[76],"clock":[77],"bias":[78],"carrier":[80],"frequency":[81],"offset.":[82],"Furthermore,":[83],"theoretically":[85],"demonstrate":[86],"how":[87],"position":[88],"derived":[90],"from":[91],"downlink":[92,131,157,169],"can":[94],"enhance":[95],"uplink":[96,163],"accuracy,":[99],"even":[100],"presence":[103],"errors,":[106],"through":[107],"an":[108],"MCRB-based":[109],"analysis.":[110],"limited":[114],"link":[115],"budgets":[116],"single-satellite":[121],"communication,":[122],"develop":[124],"multi-LEO":[126],"cooperative":[127],"beamforming":[128],"strategy":[129],"for":[130],"transmission":[132],"leverages":[134],"cluster-wise":[135],"cooperation":[137],"while":[138],"maintaining":[139],"reduced":[140],"complexity.":[141],"Theoretical":[142],"analyses":[143],"numerical":[145],"results":[146],"confirm":[147],"effectiveness":[149],"proposed":[152],"framework":[153],"facilitating":[155,162],"high-precision":[156],"estimation,":[165],"enabling":[167],"efficient":[168],"communication.":[170]},"counts_by_year":[],"updated_date":"2026-02-11T14:41:00.668223","created_date":"2026-01-29T00:00:00"}