{"id":"https://openalex.org/W2605378127","doi":"https://doi.org/10.1109/glocom.2017.8254510","title":"Improving the Performance of OTDOA Based Positioning in NB-IoT Systems","display_name":"Improving the Performance of OTDOA Based Positioning in NB-IoT Systems","publication_year":2017,"publication_date":"2017-12-01","ids":{"openalex":"https://openalex.org/W2605378127","doi":"https://doi.org/10.1109/glocom.2017.8254510","mag":"2605378127"},"language":"en","primary_location":{"id":"doi:10.1109/glocom.2017.8254510","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2017.8254510","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2017 - 2017 IEEE Global Communications Conference","raw_type":"proceedings-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/A5025615428","display_name":"Sha Hu","orcid":"https://orcid.org/0000-0001-8495-3906"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":true,"raw_author_name":"Sha Hu","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Lund, Sweden"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Lund, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025118280","display_name":"Axel Berg","orcid":"https://orcid.org/0000-0003-4401-989X"},"institutions":[{"id":"https://openalex.org/I1289187217","display_name":"Swedish Armed Forces","ror":"https://ror.org/04qn5a624","country_code":"SE","type":"government","lineage":["https://openalex.org/I1289187217"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Axel Berg","raw_affiliation_strings":["ARM, Lund, Sweden"],"affiliations":[{"raw_affiliation_string":"ARM, Lund, Sweden","institution_ids":["https://openalex.org/I1289187217"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100712471","display_name":"Xuhong Li","orcid":"https://orcid.org/0000-0002-3095-7335"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Xuhong Li","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Lund, Sweden"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Lund, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002140807","display_name":"Fredrik Rusek","orcid":"https://orcid.org/0000-0002-2077-3858"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Fredrik Rusek","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Lund, Sweden"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Lund, Sweden","institution_ids":["https://openalex.org/I187531555"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5025615428"],"corresponding_institution_ids":["https://openalex.org/I187531555"],"apc_list":null,"apc_paid":null,"fwci":5.7337,"has_fulltext":false,"cited_by_count":54,"citation_normalized_percentile":{"value":0.96548499,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"7"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12146","display_name":"Power Line Communications and Noise","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/T12146","display_name":"Power Line Communications and Noise","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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9997000098228455,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9990000128746033,"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/computer-science","display_name":"Computer science","score":0.7154635787010193},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6331984996795654},{"id":"https://openalex.org/keywords/time-of-arrival","display_name":"Time of arrival","score":0.5368192195892334},{"id":"https://openalex.org/keywords/detector","display_name":"Detector","score":0.48828673362731934},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.4870036244392395},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.4700162708759308},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.4299776554107666},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.37785807251930237},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.26101720333099365},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.12429934740066528}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7154635787010193},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6331984996795654},{"id":"https://openalex.org/C163150518","wikidata":"https://www.wikidata.org/wiki/Q4135208","display_name":"Time of arrival","level":3,"score":0.5368192195892334},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.48828673362731934},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.4870036244392395},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.4700162708759308},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4299776554107666},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.37785807251930237},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.26101720333099365},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.12429934740066528}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/glocom.2017.8254510","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2017.8254510","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"GLOBECOM 2017 - 2017 IEEE Global Communications Conference","raw_type":"proceedings-article"},{"id":"pmh:oai:lup.lub.lu.se:8240e864-8fee-4917-ab43-75c59bff90e9","is_oa":false,"landing_page_url":"https://lup.lub.lu.se/record/8240e864-8fee-4917-ab43-75c59bff90e9","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W1963164960","https://openalex.org/W1965392255","https://openalex.org/W1987286625","https://openalex.org/W2159043079","https://openalex.org/W2565795777"],"related_works":["https://openalex.org/W2005436079","https://openalex.org/W2122256026","https://openalex.org/W2351638733","https://openalex.org/W2099807088","https://openalex.org/W2041097719","https://openalex.org/W2393433253","https://openalex.org/W2183550981","https://openalex.org/W4239912537","https://openalex.org/W2389082469","https://openalex.org/W3020852241"],"abstract_inverted_index":{"In":[0,58,110],"this":[1],"paper,":[2],"we":[3,77],"consider":[4,35,263],"positioning":[5,267],"with":[6,207],"observed-time-difference-of-arrival":[7],"(OTDOA)":[8],"for":[9,52,129],"a":[10,62,84,111,119,124,137,145,160,164,178,268],"device":[11,81,221],"deployed":[12],"in":[13,136],"long-term-evolution":[14],"(LTE)":[15],"based":[16,27,103,196,234],"narrow-band":[17],"Internet-of-things":[18],"(NB-IoT)":[19],"systems.":[20],"We":[21,225],"propose":[22],"an":[23,79],"iterative":[24],"expectation-":[25],"maximization":[26],"successive":[28],"interference":[29],"cancellation":[30],"(EM-SIC)":[31],"algorithm":[32,96],"to":[33,60,70,100,140,150,163],"jointly":[34],"estimations":[36],"of":[37,48,54,73,122,131,154,212,218],"residual":[38,247],"frequency-":[39],"offset":[40],"(FO),":[41],"fading-channel":[42,245],"taps":[43],"and":[44,67,209,246],"time-of-":[45],"arrival":[46],"(ToA)":[47],"the":[49,55,71,116,132,142,152,175,184,191,210,216,219,231],"first":[50,112],"arrival-path":[51],"each":[53,130],"detected":[56,133,213],"cells.":[57,134],"order":[59],"design":[61],"low":[63,161],"complexity":[64],"ToA":[65,126,143,186,235,258],"detector":[66,236],"also":[68],"due":[69],"limits":[72],"low-cost":[74],"analog":[75],"circuits,":[76],"assume":[78],"NB-IoT":[80,220],"working":[82],"at":[83,159,183,201],"low-sampling":[85],"rate":[86],"such":[87,167],"as":[88,168],"1.92":[89],"MHz":[90],"or":[91],"lower.":[92],"The":[93],"proposed":[94,232],"EM-SIC":[95,117,233],"comprises":[97],"two":[98],"stages":[99],"detect":[101],"ToA,":[102],"on":[104,197],"which":[105],"OTDOA":[106,208],"can":[107,222],"be":[108,223],"calculated.":[109],"stage,":[113,139],"after":[114],"running":[115],"block":[118],"predefined":[120],"number":[121],"iterations,":[123],"coarse":[125,185],"is":[127,148,237],"estimated":[128,195],"Then":[135],"second":[138],"improve":[141],"resolution,":[144],"low-pass":[146],"filter":[147],"utilized":[149],"interpolate":[151],"correlations":[153,176],"time-domain":[155],"PRS":[156],"signal":[157],"evaluated":[158],"sampling-rate":[162,166],"high":[165],"30.72":[169],"MHz.":[170],"To":[171],"keep":[172],"low-complexity,":[173],"only":[174],"inside":[177],"small":[179],"search":[180],"window":[181],"centered":[182],"estimates":[187],"are":[188,194,205,254],"upsampled.":[189],"Then,":[190],"refined":[192],"ToAs":[193],"upsampled":[198],"correlations.":[199],"If":[200],"least":[202],"three":[203],"cells":[204],"detected,":[206],"locations":[211],"cell":[214],"sites,":[215],"position":[217],"estimated.":[224],"show":[226],"through":[227],"numerical":[228],"simulations":[229],"that,":[230],"robust":[238],"against":[239],"impairments":[240,265],"introduced":[241],"by":[242],"inter-cell":[243],"interference,":[244],"FO.":[248],"Thus":[249],"significant":[250],"signal-to-noise":[251],"(SNR)":[252],"gains":[253],"obtained":[255],"over":[256],"traditional":[257],"detectors":[259],"that":[260],"do":[261],"not":[262],"these":[264],"when":[266],"device.":[269]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":15},{"year":2019,"cited_by_count":14},{"year":2018,"cited_by_count":9},{"year":2017,"cited_by_count":2}],"updated_date":"2026-02-09T05:59:30.833894","created_date":"2025-10-10T00:00:00"}
