{"id":"https://openalex.org/W1990442732","doi":"https://doi.org/10.1109/vetecf.2011.6093286","title":"Indoor Positioning Using Femtocells","display_name":"Indoor Positioning Using Femtocells","publication_year":2011,"publication_date":"2011-09-01","ids":{"openalex":"https://openalex.org/W1990442732","doi":"https://doi.org/10.1109/vetecf.2011.6093286","mag":"1990442732"},"language":"en","primary_location":{"id":"doi:10.1109/vetecf.2011.6093286","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecf.2011.6093286","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE Vehicular Technology Conference (VTC Fall)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5023153822","display_name":"Varun Khaitan","orcid":null},"institutions":[{"id":"https://openalex.org/I19268510","display_name":"Qualcomm (United Kingdom)","ror":"https://ror.org/04d3djg48","country_code":"GB","type":"company","lineage":["https://openalex.org/I19268510","https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210087596","display_name":"Qualcomm (United States)","ror":"https://ror.org/002zrf773","country_code":"US","type":"company","lineage":["https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210111675","display_name":"Market Matters","ror":"https://ror.org/021yan307","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210111675"]}],"countries":["GB","US"],"is_corresponding":false,"raw_author_name":"Varun Khaitan","raw_affiliation_strings":["Qualcomm Inc., San Diego, CA, USA","Qualcomm Inc.  San Diego CA USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qualcomm Inc., San Diego, CA, USA","institution_ids":["https://openalex.org/I4210087596","https://openalex.org/I4210111675"]},{"raw_affiliation_string":"Qualcomm Inc.  San Diego CA USA","institution_ids":["https://openalex.org/I19268510","https://openalex.org/I4210111675"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015445928","display_name":"Peerapol Tinnakornsrisuphap","orcid":"https://orcid.org/0000-0001-8464-541X"},"institutions":[{"id":"https://openalex.org/I19268510","display_name":"Qualcomm (United Kingdom)","ror":"https://ror.org/04d3djg48","country_code":"GB","type":"company","lineage":["https://openalex.org/I19268510","https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210087596","display_name":"Qualcomm (United States)","ror":"https://ror.org/002zrf773","country_code":"US","type":"company","lineage":["https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210111675","display_name":"Market Matters","ror":"https://ror.org/021yan307","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210111675"]}],"countries":["GB","US"],"is_corresponding":false,"raw_author_name":"Peerapol Tinnakornsrisuphap","raw_affiliation_strings":["Qualcomm Inc., San Diego, CA, USA","Qualcomm Inc.  San Diego CA USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qualcomm Inc., San Diego, CA, USA","institution_ids":["https://openalex.org/I4210087596","https://openalex.org/I4210111675"]},{"raw_affiliation_string":"Qualcomm Inc.  San Diego CA USA","institution_ids":["https://openalex.org/I19268510","https://openalex.org/I4210111675"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103577650","display_name":"Mehmet Yavuz","orcid":null},"institutions":[{"id":"https://openalex.org/I19268510","display_name":"Qualcomm (United Kingdom)","ror":"https://ror.org/04d3djg48","country_code":"GB","type":"company","lineage":["https://openalex.org/I19268510","https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210087596","display_name":"Qualcomm (United States)","ror":"https://ror.org/002zrf773","country_code":"US","type":"company","lineage":["https://openalex.org/I4210087596"]},{"id":"https://openalex.org/I4210111675","display_name":"Market Matters","ror":"https://ror.org/021yan307","country_code":"US","type":"nonprofit","lineage":["https://openalex.org/I4210111675"]}],"countries":["GB","US"],"is_corresponding":false,"raw_author_name":"Mehmet Yavuz","raw_affiliation_strings":["Qualcomm Inc., San Diego, CA, USA","Qualcomm Inc.  San Diego CA USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Qualcomm Inc., San Diego, CA, USA","institution_ids":["https://openalex.org/I4210087596","https://openalex.org/I4210111675"]},{"raw_affiliation_string":"Qualcomm Inc.  San Diego CA USA","institution_ids":["https://openalex.org/I19268510","https://openalex.org/I4210111675"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.895,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.68106114,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9998000264167786,"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9998000264167786,"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":0.9991999864578247,"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9988999962806702,"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/femtocell","display_name":"Femtocell","score":0.8764400482177734},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7573419809341431},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7526947259902954},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.5649169683456421},{"id":"https://openalex.org/keywords/multilateration","display_name":"Multilateration","score":0.5565824508666992},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.5355201959609985},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.51180499792099},{"id":"https://openalex.org/keywords/indoor-positioning-system","display_name":"Indoor positioning system","score":0.4849848747253418},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.47906240820884705},{"id":"https://openalex.org/keywords/schedule","display_name":"Schedule","score":0.4333755373954773},{"id":"https://openalex.org/keywords/cellular-network","display_name":"Cellular network","score":0.4134690761566162},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3676116466522217},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.3053838610649109},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.22078856825828552},{"id":"https://openalex.org/keywords/azimuth","display_name":"Azimuth","score":0.2047436535358429}],"concepts":[{"id":"https://openalex.org/C152504517","wikidata":"https://www.wikidata.org/wiki/Q572455","display_name":"Femtocell","level":3,"score":0.8764400482177734},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7573419809341431},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7526947259902954},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.5649169683456421},{"id":"https://openalex.org/C104037064","wikidata":"https://www.wikidata.org/wiki/Q1640884","display_name":"Multilateration","level":3,"score":0.5565824508666992},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.5355201959609985},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.51180499792099},{"id":"https://openalex.org/C2777486483","wikidata":"https://www.wikidata.org/wiki/Q6026477","display_name":"Indoor positioning system","level":3,"score":0.4849848747253418},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.47906240820884705},{"id":"https://openalex.org/C68387754","wikidata":"https://www.wikidata.org/wiki/Q7271585","display_name":"Schedule","level":2,"score":0.4333755373954773},{"id":"https://openalex.org/C153646914","wikidata":"https://www.wikidata.org/wiki/Q535695","display_name":"Cellular network","level":2,"score":0.4134690761566162},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3676116466522217},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.3053838610649109},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.22078856825828552},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.2047436535358429},{"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/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C89805583","wikidata":"https://www.wikidata.org/wiki/Q192940","display_name":"Accelerometer","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vetecf.2011.6093286","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecf.2011.6093286","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE Vehicular Technology Conference (VTC Fall)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W125393411","https://openalex.org/W177419499","https://openalex.org/W2128051927","https://openalex.org/W2128780954","https://openalex.org/W2130945928","https://openalex.org/W2145113072","https://openalex.org/W2162499288","https://openalex.org/W2162621266","https://openalex.org/W6605038932"],"related_works":["https://openalex.org/W790449367","https://openalex.org/W2052892589","https://openalex.org/W2153023023","https://openalex.org/W2137662009","https://openalex.org/W4302568799","https://openalex.org/W1482197907","https://openalex.org/W2017282549","https://openalex.org/W2035650171","https://openalex.org/W1550567184","https://openalex.org/W2950729840"],"abstract_inverted_index":{"The":[0,70],"ability":[1],"to":[2,11,33,45],"locate":[3],"oneself":[4],"indoors":[5,31],"on":[6],"a":[7,15,61,75,106,112],"map":[8],"and":[9,21,56,67,82],"navigate":[10],"desired":[12],"areas":[13],"has":[14],"wide":[16],"range":[17],"of":[18,54,60,72,77,85,92,98,108,120],"applications.":[19],"GPS":[20],"macro":[22],"cell":[23],"tower":[24],"based":[25],"positioning":[26],"are":[27],"not":[28],"very":[29],"effective":[30],"due":[32],"poor":[34],"signal":[35,89],"quality":[36],"or":[37],"limited":[38],"accuracy":[39],"in":[40],"location":[41],"estimation.":[42],"We":[43],"propose":[44],"solve":[46],"this":[47],"problem":[48],"by":[49],"deploying":[50],"an":[51],"indoor":[52,127],"network":[53],"femtocells":[55,78,93],"determining":[57],"the":[58,65,80,83,86,99,121],"position":[59],"3G":[62],"mobile":[63,81],"using":[64],"downlink":[66],"uplink":[68],"signals.":[69],"measurement":[71,84],"signals":[73,123],"from":[74],"group":[76,91],"at":[79,90],"mobile's":[87,100],"transmitted":[88],"is":[94,103],"used":[95],"for":[96],"triangulation":[97],"position.":[101],"It":[102],"shown":[104],"that":[105],"combination":[107],"these":[109],"methods":[110],"with":[111],"cleverly":[113],"designed":[114],"transmission":[115],"schedule":[116],"involving":[117],"time":[118],"orthogonalization":[119],"femtocell":[122],"can":[124],"enable":[125],"accurate":[126],"positioning.":[128]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}