{"id":"https://openalex.org/W7161552650","doi":"https://doi.org/10.1109/jiot.2026.3694101","title":"Gridless DoA Estimation in Semipassive IRS-Assisted Sensing via Atomic Norm Minimization and an Accelerated Proximal Gradient Method","display_name":"Gridless DoA Estimation in Semipassive IRS-Assisted Sensing via Atomic Norm Minimization and an Accelerated Proximal Gradient Method","publication_year":2026,"publication_date":"2026-05-18","ids":{"openalex":"https://openalex.org/W7161552650","doi":"https://doi.org/10.1109/jiot.2026.3694101"},"language":null,"primary_location":{"id":"doi:10.1109/jiot.2026.3694101","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3694101","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","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/A5100633632","display_name":"Yue Wang","orcid":"https://orcid.org/0000-0003-0098-5359"},"institutions":[{"id":"https://openalex.org/I20942203","display_name":"Hainan University","ror":"https://ror.org/03q648j11","country_code":"CN","type":"education","lineage":["https://openalex.org/I20942203"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuan Wang","raw_affiliation_strings":["Hainan University"],"raw_orcid":"https://orcid.org/0009-0002-2598-7190","affiliations":[{"raw_affiliation_string":"Hainan University","institution_ids":["https://openalex.org/I20942203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136418722","display_name":"Xianpeng Wang","orcid":"https://orcid.org/0000-0002-6681-6489"},"institutions":[{"id":"https://openalex.org/I20942203","display_name":"Hainan University","ror":"https://ror.org/03q648j11","country_code":"CN","type":"education","lineage":["https://openalex.org/I20942203"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xianpeng Wang","raw_affiliation_strings":["Hainan University"],"raw_orcid":"https://orcid.org/0000-0002-6681-6489","affiliations":[{"raw_affiliation_string":"Hainan University","institution_ids":["https://openalex.org/I20942203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5018065582","display_name":"Yuehao Guo","orcid":"https://orcid.org/0000-0002-4042-2609"},"institutions":[{"id":"https://openalex.org/I20942203","display_name":"Hainan University","ror":"https://ror.org/03q648j11","country_code":"CN","type":"education","lineage":["https://openalex.org/I20942203"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuehao Guo","raw_affiliation_strings":["Hainan University"],"raw_orcid":"https://orcid.org/0000-0002-4042-2609","affiliations":[{"raw_affiliation_string":"Hainan University","institution_ids":["https://openalex.org/I20942203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008206001","display_name":"Mingcheng Fu","orcid":"https://orcid.org/0000-0002-6152-8955"},"institutions":[{"id":"https://openalex.org/I20942203","display_name":"Hainan University","ror":"https://ror.org/03q648j11","country_code":"CN","type":"education","lineage":["https://openalex.org/I20942203"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mingcheng Fu","raw_affiliation_strings":["Hainan University"],"raw_orcid":"https://orcid.org/0000-0002-6152-8955","affiliations":[{"raw_affiliation_string":"Hainan University","institution_ids":["https://openalex.org/I20942203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082609933","display_name":"Linqiang Wen","orcid":"https://orcid.org/0009-0001-4150-0605"},"institutions":[{"id":"https://openalex.org/I20942203","display_name":"Hainan University","ror":"https://ror.org/03q648j11","country_code":"CN","type":"education","lineage":["https://openalex.org/I20942203"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Linqiang Wen","raw_affiliation_strings":["Hainan University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hainan University","institution_ids":["https://openalex.org/I20942203"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136424540","display_name":"Han Wang","orcid":"https://orcid.org/0000-0001-7347-3763"},"institutions":[{"id":"https://openalex.org/I6469544","display_name":"City University of Macau","ror":"https://ror.org/04gpd4q15","country_code":"MO","type":"education","lineage":["https://openalex.org/I6469544"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Han Wang","raw_affiliation_strings":["City University of Macau"],"raw_orcid":"https://orcid.org/0000-0001-7347-3763","affiliations":[{"raw_affiliation_string":"City University of Macau","institution_ids":["https://openalex.org/I6469544"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5135123671","display_name":"Guan Gui","orcid":"https://orcid.org/0000-0003-3888-2881"},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guan Gui","raw_affiliation_strings":["Nanjing University of Posts and Telecommunications"],"raw_orcid":"https://orcid.org/0000-0003-3888-2881","affiliations":[{"raw_affiliation_string":"Nanjing University of Posts and Telecommunications","institution_ids":["https://openalex.org/I41198531"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.58297537,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"15","first_page":"33010","last_page":"33022"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11414","display_name":"Quantum optics and atomic interactions","score":0.21529999375343323,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11414","display_name":"Quantum optics and atomic interactions","score":0.21529999375343323,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11111","display_name":"Spectroscopy and Laser Applications","score":0.20000000298023224,"subfield":{"id":"https://openalex.org/subfields/1607","display_name":"Spectroscopy"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11449","display_name":"Mechanical and Optical Resonators","score":0.09769999980926514,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/minification","display_name":"Minification","score":0.7028999924659729},{"id":"https://openalex.org/keywords/norm","display_name":"Norm (philosophy)","score":0.435699999332428},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.3434999883174896},{"id":"https://openalex.org/keywords/gradient-method","display_name":"Gradient method","score":0.3416000008583069},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.3248000144958496},{"id":"https://openalex.org/keywords/gradient-descent","display_name":"Gradient descent","score":0.29249998927116394}],"concepts":[{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.7028999924659729},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6714000105857849},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5852000117301941},{"id":"https://openalex.org/C191795146","wikidata":"https://www.wikidata.org/wiki/Q3878446","display_name":"Norm (philosophy)","level":2,"score":0.435699999332428},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.3434999883174896},{"id":"https://openalex.org/C115680565","wikidata":"https://www.wikidata.org/wiki/Q5977448","display_name":"Gradient method","level":2,"score":0.3416000008583069},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.3248000144958496},{"id":"https://openalex.org/C153258448","wikidata":"https://www.wikidata.org/wiki/Q1199743","display_name":"Gradient descent","level":3,"score":0.29249998927116394},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.28949999809265137},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.2802000045776367},{"id":"https://openalex.org/C106516650","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm design","level":2,"score":0.26179999113082886},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.2612000107765198},{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.257099986076355}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jiot.2026.3694101","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3694101","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Climate action","id":"https://metadata.un.org/sdg/13","score":0.6638469696044922}],"awards":[{"id":"https://openalex.org/G1933682856","display_name":null,"funder_award_id":"62461020","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6937810486","display_name":null,"funder_award_id":"U25A20400","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Intelligent":[0],"reflecting":[1],"surfaces":[2],"(IRS)":[3],"enable":[4],"radar":[5],"sensing":[6,146],"in":[7,31,91,147],"blocked":[8],"environments":[9],"by":[10],"reconfiguring":[11],"propagation":[12],"and":[13,45,72,86,98,125,134],"creating":[14],"virtual":[15],"apertures,":[16],"which":[17],"is":[18,62],"crucial":[19],"for":[20,143],"non-line-of-sight":[21],"(NLoS)":[22],"localization.":[23],"This":[24],"work":[25],"addresses":[26],"high-accuracy":[27],"direction-of-arrival":[28],"(DoA)":[29],"estimation":[30],"semi-passive":[32],"IRS-assisted":[33],"sensing.":[34],"We":[35],"introduce":[36],"a":[37,47,65],"virtual-domain":[38],"lifting":[39],"that":[40,81],"vectorizes":[41],"the":[42,83,101,137,140],"received":[43],"echoes":[44],"induces":[46],"structured":[48],"atomic":[49,54],"set,":[50],"leading":[51],"to":[52,131],"an":[53,75,105],"norm":[55],"minimization":[56],"(ANM)":[57],"formulation.":[58],"The":[59],"ANM":[60],"estimator":[61,103],"formulated":[63],"as":[64],"semidefinite":[66],"program":[67],"(SDP)":[68],"via":[69],"convex":[70],"relaxation,":[71],"we":[73],"develop":[74],"accelerated":[76],"proximal":[77],"gradient":[78],"(APG)":[79],"solver":[80],"leverages":[82],"problem":[84],"structure":[85],"avoids":[87],"interior-point":[88],"steps,":[89],"resulting":[90],"substantial":[92],"computational":[93],"savings.":[94],"Compared":[95],"with":[96],"spatial-domain":[97],"grid-based":[99],"approaches,":[100],"transformed-domain":[102],"delivers":[104],"optimal":[106],"accuracy-complexity":[107],"tradeoff.":[108],"It":[109],"achieves":[110],"gridless":[111],"(ANM-level)":[112],"high":[113],"resolution":[114],"while":[115],"reducing":[116],"runtime.":[117],"Extensive":[118],"simulations":[119],"across":[120],"array":[121],"sizes,":[122],"transmit":[123],"power,":[124],"IRS":[126],"configurations":[127],"confirm":[128],"accuracy,":[129],"robustness":[130],"off-grid":[132],"mismatch,":[133],"scalability,":[135],"demonstrating":[136],"practicality":[138],"of":[139],"proposed":[141],"method":[142],"IRS-enabled":[144],"NLoS":[145],"complex":[148],"environments.":[149]},"counts_by_year":[],"updated_date":"2026-07-25T05:54:39.514286","created_date":"2026-05-19T00:00:00"}
