{"id":"https://openalex.org/W4414348231","doi":"https://doi.org/10.1109/tsp.2025.3609719","title":"CRB Optimization for Intelligent Reflecting Surface-Assisted NLOS Wireless Sensing","display_name":"CRB Optimization for Intelligent Reflecting Surface-Assisted NLOS Wireless Sensing","publication_year":2025,"publication_date":"2025-01-01","ids":{"openalex":"https://openalex.org/W4414348231","doi":"https://doi.org/10.1109/tsp.2025.3609719"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2025.3609719","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2025.3609719","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"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 Signal Processing","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/A5019621392","display_name":"Jilin Wang","orcid":null},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jilin Wang","raw_affiliation_strings":["National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu, China"],"affiliations":[{"raw_affiliation_string":"National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067626381","display_name":"Jun Fang","orcid":"https://orcid.org/0000-0001-7427-4723"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jun Fang","raw_affiliation_strings":["National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu, China"],"affiliations":[{"raw_affiliation_string":"National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100365817","display_name":"Hongbin Li","orcid":"https://orcid.org/0000-0003-1453-847X"},"institutions":[{"id":"https://openalex.org/I108468826","display_name":"Stevens Institute of Technology","ror":"https://ror.org/02z43xh36","country_code":"US","type":"education","lineage":["https://openalex.org/I108468826"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hongbin Li","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ, USA","Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ, USA","institution_ids":["https://openalex.org/I108468826"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, USA","institution_ids":["https://openalex.org/I108468826"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030334551","display_name":"Christos Masouros","orcid":"https://orcid.org/0000-0002-8259-6615"},"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":"Christos Masouros","raw_affiliation_strings":["Department of Electronic and Electrical Engineering, University College London, London, U.K"],"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":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5019621392"],"corresponding_institution_ids":["https://openalex.org/I150229711"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.31428056,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"73","issue":null,"first_page":"3994","last_page":"4010"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":0.9555000066757202,"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/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":0.9555000066757202,"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/T10080","display_name":"Energy Efficient Wireless Sensor Networks","score":0.9333000183105469,"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/wireless","display_name":"Wireless","score":0.5392000079154968},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.4366999864578247},{"id":"https://openalex.org/keywords/non-line-of-sight-propagation","display_name":"Non-line-of-sight propagation","score":0.4205000102519989},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.3553999960422516},{"id":"https://openalex.org/keywords/wireless-sensor-network","display_name":"Wireless sensor network","score":0.33869999647140503},{"id":"https://openalex.org/keywords/radar-tracker","display_name":"Radar tracker","score":0.2930999994277954}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6712999939918518},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5392000079154968},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.4366999864578247},{"id":"https://openalex.org/C154910267","wikidata":"https://www.wikidata.org/wiki/Q1740982","display_name":"Non-line-of-sight propagation","level":3,"score":0.4205000102519989},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4115000069141388},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3873000144958496},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.3553999960422516},{"id":"https://openalex.org/C24590314","wikidata":"https://www.wikidata.org/wiki/Q336038","display_name":"Wireless sensor network","level":2,"score":0.33869999647140503},{"id":"https://openalex.org/C32283439","wikidata":"https://www.wikidata.org/wiki/Q1407014","display_name":"Radar tracker","level":3,"score":0.2930999994277954},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.29260000586509705},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.2896000146865845},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.2775000035762787},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.2678000032901764},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.25600001215934753},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.25450000166893005},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.2535000145435333}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tsp.2025.3609719","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2025.3609719","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"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 Signal Processing","raw_type":"journal-article"},{"id":"pmh:oai:eprints.ucl.ac.uk.OAI2:10214931","is_oa":false,"landing_page_url":"https://discovery.ucl.ac.uk/id/eprint/10214931/","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 Signal Processing       (2025)     (In press).","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W1926244710","https://openalex.org/W1991056455","https://openalex.org/W2045089915","https://openalex.org/W2808499605","https://openalex.org/W2969424089","https://openalex.org/W2990747873","https://openalex.org/W3001977108","https://openalex.org/W3006143078","https://openalex.org/W3043220753","https://openalex.org/W3162644779","https://openalex.org/W3192638455","https://openalex.org/W3194620979","https://openalex.org/W3200820186","https://openalex.org/W3208470089","https://openalex.org/W4200558960","https://openalex.org/W4205204500","https://openalex.org/W4214867678","https://openalex.org/W4223477331","https://openalex.org/W4309888303","https://openalex.org/W4372341636","https://openalex.org/W4377231518","https://openalex.org/W4378697233","https://openalex.org/W4379033831","https://openalex.org/W4381745457","https://openalex.org/W4387623863","https://openalex.org/W4389104716","https://openalex.org/W4391547747","https://openalex.org/W4394730874","https://openalex.org/W4394744522","https://openalex.org/W4399409956","https://openalex.org/W4400526165","https://openalex.org/W4402159283","https://openalex.org/W4404370880","https://openalex.org/W4411949779"],"related_works":[],"abstract_inverted_index":{"In":[0],"this":[1,93,111],"paper,":[2],"we":[3,95,113],"investigate":[4],"an":[5,16,19],"intelligent":[6],"reflecting":[7],"surface":[8],"(IRS)-assisted":[9],"non-line-of-sight":[10],"(NLOS)":[11],"wireless":[12],"sensing":[13,56,99],"system,":[14],"where":[15,185],"IRS":[17,107,135,153],"aids":[18],"access":[20],"point":[21],"(AP)":[22],"in":[23,30,53,147,182],"estimating":[24],"the":[25,40,47,58,65,72,81,89,103,106,126,130,142,152,166,169,186,194],"parameters":[26,87],"of":[27,67,88,105,129,168],"a":[28,97,115,148,159],"target":[29,41],"its":[31],"NLOS":[32,55],"region.":[33],"The":[34],"AP":[35],"transmits":[36],"signals":[37],"and":[38,85,134,175],"detects":[39],"based":[42],"on":[43],"echoes":[44],"propagating":[45],"through":[46],"AP-IRS-target-IRS-AP":[48],"channel.":[49],"A":[50],"key":[51],"challenge":[52],"IRS-assisted":[54],"is":[57,145],"inherent":[59],"scaling":[60,195],"ambiguity,":[61],"which":[62],"arises":[63],"when":[64],"degrees":[66],"freedom":[68],"(DoFs)":[69],"provided":[70],"by":[71],"AP-IRS":[73,187],"channel":[74,188],"are":[75,156,190],"insufficient":[76,191],"to":[77,178,192],"uniquely":[78],"estimate":[79],"both":[80],"complex":[82],"path":[83],"gain":[84],"angular":[86],"target.":[90],"To":[91],"address":[92],"issue,":[94],"introduce":[96],"two-stage":[98],"scheme":[100],"that":[101],"leverages":[102],"diversity":[104],"illumination":[108],"pattern.":[109],"Within":[110],"framework,":[112],"derive":[114],"compact":[116],"Cram\u00e9r-Rao":[117],"Bound":[118],"(CRB)":[119],"expression":[120],"for":[121],"direction-of-arrival":[122],"(DOA)":[123],"estimation,":[124],"enabling":[125],"decoupled":[127],"optimization":[128],"AP\u2019s":[131],"transmit":[132],"beamformer":[133,144],"phase":[136],"shifts":[137],"via":[138],"CRB":[139,174],"minimization.":[140],"Specifically,":[141],"optimal":[143],"obtained":[146],"closed":[149],"form,":[150],"while":[151],"reflective":[154],"coefficients":[155],"optimized":[157],"using":[158],"majorization-minimization":[160],"(MM)-based":[161],"algorithm.":[162],"Simulation":[163],"results":[164],"demonstrate":[165],"superiority":[167],"proposed":[170],"method,":[171],"achieving":[172],"lower":[173],"MSE":[176],"compared":[177],"benchmark":[179],"schemes,":[180],"particularly":[181],"challenging":[183],"scenarios":[184],"DoFs":[189],"resolve":[193],"ambiguity.":[196]},"counts_by_year":[],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}
