{"id":"https://openalex.org/W3003251380","doi":"https://doi.org/10.1007/s42486-020-00027-1","title":"Device free human activity and fall recognition using WiFi channel state information (CSI)","display_name":"Device free human activity and fall recognition using WiFi channel state information (CSI)","publication_year":2020,"publication_date":"2020-01-30","ids":{"openalex":"https://openalex.org/W3003251380","doi":"https://doi.org/10.1007/s42486-020-00027-1","mag":"3003251380"},"language":"en","primary_location":{"id":"doi:10.1007/s42486-020-00027-1","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s42486-020-00027-1","pdf_url":"https://link.springer.com/content/pdf/10.1007/s42486-020-00027-1.pdf","source":{"id":"https://openalex.org/S4210200914","display_name":"CCF Transactions on Pervasive Computing and Interaction","issn_l":"2524-521X","issn":["2524-521X","2524-5228"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CCF Transactions on Pervasive Computing and Interaction","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://link.springer.com/content/pdf/10.1007/s42486-020-00027-1.pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5050887697","display_name":"Neena Damodaran","orcid":null},"institutions":[{"id":"https://openalex.org/I114090438","display_name":"Goethe University Frankfurt","ror":"https://ror.org/04cvxnb49","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},{"id":"https://openalex.org/I5237613","display_name":"Frankfurt University of Applied Sciences","ror":"https://ror.org/02r625m11","country_code":"DE","type":"education","lineage":["https://openalex.org/I5237613"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Neena Damodaran","raw_affiliation_strings":["Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany","institution_ids":["https://openalex.org/I114090438","https://openalex.org/I5237613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079638624","display_name":"Elis Haruni","orcid":null},"institutions":[{"id":"https://openalex.org/I114090438","display_name":"Goethe University Frankfurt","ror":"https://ror.org/04cvxnb49","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},{"id":"https://openalex.org/I5237613","display_name":"Frankfurt University of Applied Sciences","ror":"https://ror.org/02r625m11","country_code":"DE","type":"education","lineage":["https://openalex.org/I5237613"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Elis Haruni","raw_affiliation_strings":["Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany","institution_ids":["https://openalex.org/I114090438","https://openalex.org/I5237613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055583725","display_name":"Muyassar Kokhkharova","orcid":"https://orcid.org/0000-0002-3355-6094"},"institutions":[{"id":"https://openalex.org/I114090438","display_name":"Goethe University Frankfurt","ror":"https://ror.org/04cvxnb49","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},{"id":"https://openalex.org/I5237613","display_name":"Frankfurt University of Applied Sciences","ror":"https://ror.org/02r625m11","country_code":"DE","type":"education","lineage":["https://openalex.org/I5237613"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Muyassar Kokhkharova","raw_affiliation_strings":["Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany","institution_ids":["https://openalex.org/I114090438","https://openalex.org/I5237613"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5077260444","display_name":"J\u00f6rg Sch\u00e4fer","orcid":"https://orcid.org/0000-0003-4797-0306"},"institutions":[{"id":"https://openalex.org/I114090438","display_name":"Goethe University Frankfurt","ror":"https://ror.org/04cvxnb49","country_code":"DE","type":"education","lineage":["https://openalex.org/I114090438"]},{"id":"https://openalex.org/I5237613","display_name":"Frankfurt University of Applied Sciences","ror":"https://ror.org/02r625m11","country_code":"DE","type":"education","lineage":["https://openalex.org/I5237613"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"J\u00f6rg Sch\u00e4fer","raw_affiliation_strings":["Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany"],"raw_orcid":"https://orcid.org/0000-0003-4797-0306","affiliations":[{"raw_affiliation_string":"Faculty of Computer Science and Engineering, Frankfurt University of Applied Sciences, Nibelungenplatz 1, 60318, Frankfurt am Main, Germany","institution_ids":["https://openalex.org/I114090438","https://openalex.org/I5237613"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5077260444"],"corresponding_institution_ids":["https://openalex.org/I114090438","https://openalex.org/I5237613"],"apc_list":{"value":1990,"currency":"USD","value_usd":1990},"apc_paid":{"value":1990,"currency":"USD","value_usd":1990},"fwci":5.6146,"has_fulltext":true,"cited_by_count":112,"citation_normalized_percentile":{"value":0.96884531,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":98,"max":100},"biblio":{"volume":"2","issue":"1","first_page":"1","last_page":"17"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":1.0,"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":1.0,"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/T11158","display_name":"Wireless Networks and Protocols","score":0.9977999925613403,"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"}},{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.995199978351593,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/computer-science","display_name":"Computer science","score":0.7970178127288818},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.7715052366256714},{"id":"https://openalex.org/keywords/activity-recognition","display_name":"Activity recognition","score":0.7085939645767212},{"id":"https://openalex.org/keywords/support-vector-machine","display_name":"Support vector machine","score":0.6177200675010681},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5618194341659546},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5057709217071533},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5038508772850037},{"id":"https://openalex.org/keywords/state","display_name":"State (computer science)","score":0.4193938970565796},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3905160129070282},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.38895320892333984},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.35579806566238403},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.280835896730423},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.15396499633789062},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14522752165794373}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7970178127288818},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.7715052366256714},{"id":"https://openalex.org/C121687571","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Activity recognition","level":2,"score":0.7085939645767212},{"id":"https://openalex.org/C12267149","wikidata":"https://www.wikidata.org/wiki/Q282453","display_name":"Support vector machine","level":2,"score":0.6177200675010681},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5618194341659546},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5057709217071533},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5038508772850037},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.4193938970565796},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3905160129070282},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.38895320892333984},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.35579806566238403},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.280835896730423},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.15396499633789062},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14522752165794373},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"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":1,"locations":[{"id":"doi:10.1007/s42486-020-00027-1","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s42486-020-00027-1","pdf_url":"https://link.springer.com/content/pdf/10.1007/s42486-020-00027-1.pdf","source":{"id":"https://openalex.org/S4210200914","display_name":"CCF Transactions on Pervasive Computing and Interaction","issn_l":"2524-521X","issn":["2524-521X","2524-5228"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CCF Transactions on Pervasive Computing and Interaction","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.1007/s42486-020-00027-1","is_oa":true,"landing_page_url":"https://doi.org/10.1007/s42486-020-00027-1","pdf_url":"https://link.springer.com/content/pdf/10.1007/s42486-020-00027-1.pdf","source":{"id":"https://openalex.org/S4210200914","display_name":"CCF Transactions on Pervasive Computing and Interaction","issn_l":"2524-521X","issn":["2524-521X","2524-5228"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CCF Transactions on Pervasive Computing and Interaction","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3003251380.pdf","grobid_xml":"https://content.openalex.org/works/W3003251380.grobid-xml"},"referenced_works_count":51,"referenced_works":["https://openalex.org/W210359992","https://openalex.org/W1498436455","https://openalex.org/W1506806321","https://openalex.org/W1544606459","https://openalex.org/W1661762247","https://openalex.org/W1983301216","https://openalex.org/W1989115430","https://openalex.org/W1998821791","https://openalex.org/W2002475595","https://openalex.org/W2023109742","https://openalex.org/W2064081294","https://openalex.org/W2064675550","https://openalex.org/W2089695767","https://openalex.org/W2095396347","https://openalex.org/W2099373266","https://openalex.org/W2101286829","https://openalex.org/W2109519180","https://openalex.org/W2119821739","https://openalex.org/W2120815373","https://openalex.org/W2129045955","https://openalex.org/W2141336889","https://openalex.org/W2144182447","https://openalex.org/W2146291834","https://openalex.org/W2170102584","https://openalex.org/W2172292165","https://openalex.org/W2294798173","https://openalex.org/W2309512289","https://openalex.org/W2338892592","https://openalex.org/W2340862004","https://openalex.org/W2344757691","https://openalex.org/W2542047294","https://openalex.org/W2572398948","https://openalex.org/W2574696175","https://openalex.org/W2575053639","https://openalex.org/W2706629214","https://openalex.org/W2763219399","https://openalex.org/W2773696605","https://openalex.org/W2782131625","https://openalex.org/W2784073566","https://openalex.org/W2793420885","https://openalex.org/W2802660937","https://openalex.org/W2805779987","https://openalex.org/W2862340573","https://openalex.org/W2890220560","https://openalex.org/W2906903288","https://openalex.org/W2928726723","https://openalex.org/W2972657490","https://openalex.org/W2997125510","https://openalex.org/W3015442482","https://openalex.org/W4235628085","https://openalex.org/W4239510810"],"related_works":["https://openalex.org/W3195649134","https://openalex.org/W2090763504","https://openalex.org/W2281498195","https://openalex.org/W148178222","https://openalex.org/W2506504620","https://openalex.org/W2017526120","https://openalex.org/W2104657898","https://openalex.org/W2610664080","https://openalex.org/W1948992892","https://openalex.org/W2899145720"],"abstract_inverted_index":{"Abstract":[0],"Human":[1],"activity":[2,83,104,294],"recognition":[3,295],"(HAR)":[4],"is":[5,87,90,99,106,179,214,234,267,281],"a":[6,115,120,133,144,215,260,268],"broad":[7],"research":[8],"area.":[9],"While":[10,152],"there":[11],"exist":[12],"solutions":[13,21,37],"based":[14,38,162,262],"on":[15,39,163,263,306],"sensors":[16],"and":[17,110,119,140,158,191,200,226,277,289,309],"vision-based":[18],"technologies,":[19],"these":[20,33],"suffer":[22],"from":[23],"considerable":[24],"limitations.":[25],"Thus":[26],"in":[27,45,56,114,218,259],"order":[28],"to":[29,69,181,198,208,236,253],"mitigate":[30],"or":[31],"avoid":[32],"limitations,":[34],"device":[35],"free":[36,292],"radio":[40],"signals":[41],"like":[42,73],"(home)":[43],"WiFi,":[44],"particular":[46],"802.11":[47],"are":[48,67],"considered.":[49],"Recently,":[50],"channel":[51,298],"state":[52,299],"information":[53],"(CSI),":[54],"available":[55],"WiFi":[57],"802.11n":[58],"networks":[59],"have":[60],"been":[61],"proposed":[62],"for":[63,85,138],"fine-grained":[64],"analysis.":[65],"We":[66,128,175],"able":[68],"detect":[70,209,237],"human":[71,82,185,210,293],"activities":[72,183],"Walk,":[74],"Sit,":[75],"Stand,":[76,102],"Run":[77],"(in":[78],"the":[79,103,153,166,169,205,219,230,248,255,264,286],"sequel,":[80],"any":[81],"used":[84,252],"classification":[86,139],"capitalised,":[88],"i.e.":[89],"denoted":[91,100,107],"by":[92,108],"its":[93],"corresponding":[94],"label.":[95],"For":[96],"example,":[97],"\u201cstanding\u201c":[98],"as":[101],"\u201csitting\u201c":[105],"Sit":[109],"so":[111],"on),":[112],"etc.":[113],"line-of-sight":[116],"(LOS)":[117],"scenario":[118,123],"non-line-of-sight":[121],"(N-LOS)":[122],"within":[124],"an":[125,282],"indoor":[126],"environment.":[127],"propose":[129],"two":[130],"algorithms\u2014one":[131],"using":[132,143,296],"support":[134],"vector":[135],"machine":[136],"(SVM)":[137],"another":[141],"one":[142],"long":[145],"short-term":[146],"memory":[147],"(LSTM)":[148],"recurrent":[149],"neural":[150],"network.":[151],"former":[154],"uses":[155],"sophisticated":[156],"pre-processing":[157],"feature":[159],"extraction":[160],"techniques":[161],"wavelet":[164],"analysis,":[165],"latter":[167],"processes":[168],"raw":[170],"data":[171],"directly":[172],"(after":[173],"denoising).":[174],"show":[176,227,246],"that":[177,228,247],"it":[178,233],"possible":[180,235],"characterize":[182],"and/or":[184],"body":[186],"presence":[187],"with":[188,196,229,239],"high":[189,240],"accuracy":[190,199],"we":[192,203,244],"compare":[193],"both":[194],"approaches":[195],"regard":[197],"performance.":[201],"Furthermore,":[202],"extend":[204],"experimental":[206],"setup":[207],"falls,":[211],"too":[212],"which":[213,266],"relevant":[216],"use-case":[217],"context":[220],"of":[221,257,285],"ambient":[222],"assisted":[223],"living":[224],"(AAL)":[225],"developed":[231],"algorithms":[232,249],"falls":[238],"accuracy.":[241],"In":[242],"addition,":[243],"also":[245],"can":[250],"be":[251],"count":[254],"number":[256],"people":[258],"room":[261],"CSI-data,":[265],"first":[269],"step":[270],"towards":[271],"detecting":[272],"more":[273],"complex":[274],"social":[275],"behavior":[276],"activities.":[278],"Our":[279],"paper":[280,287],"extended":[283],"version":[284],"(Damodaran":[288],"Sch\u00e4fer,":[290],"Device":[291],"wifi":[297],"information,":[300],"in:":[301],"16th":[302],"IEEE":[303,314],"International":[304],"Conference":[305],"Ubiquitous":[307],"Intelligence":[308],"Computing":[310],"(UIC":[311],"2019),":[312],"5th":[313],"Smart":[315],"World":[316],"Congress,":[317],"Leicester,":[318],"vol":[319],"16,":[320],"IEEE,":[321],"2019).":[322]},"counts_by_year":[{"year":2026,"cited_by_count":11},{"year":2025,"cited_by_count":20},{"year":2024,"cited_by_count":16},{"year":2023,"cited_by_count":27},{"year":2022,"cited_by_count":20},{"year":2021,"cited_by_count":11},{"year":2020,"cited_by_count":7}],"updated_date":"2026-08-28T12:50:07.497085","created_date":"2025-10-10T00:00:00"}
