{"id":"https://openalex.org/W4376455255","doi":"https://doi.org/10.1109/lwc.2023.3274936","title":"A Low-Complexity OTFS Channel Estimation Method for Fractional Delay-Doppler Scenarios","display_name":"A Low-Complexity OTFS Channel Estimation Method for Fractional Delay-Doppler Scenarios","publication_year":2023,"publication_date":"2023-05-10","ids":{"openalex":"https://openalex.org/W4376455255","doi":"https://doi.org/10.1109/lwc.2023.3274936"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2023.3274936","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2023.3274936","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","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/A5100740645","display_name":"Imran Ali Khan","orcid":"https://orcid.org/0009-0000-1003-910X"},"institutions":[{"id":"https://openalex.org/I68891433","display_name":"Indian Institute of Technology Delhi","ror":"https://ror.org/049tgcd06","country_code":"IN","type":"education","lineage":["https://openalex.org/I68891433"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"Imran Ali Khan","raw_affiliation_strings":["Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Indian Institute of Technology Delhi, New Delhi, India","institution_ids":["https://openalex.org/I68891433"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5070481781","display_name":"Saif Khan Mohammed","orcid":"https://orcid.org/0000-0003-3822-2138"},"institutions":[{"id":"https://openalex.org/I68891433","display_name":"Indian Institute of Technology Delhi","ror":"https://ror.org/049tgcd06","country_code":"IN","type":"education","lineage":["https://openalex.org/I68891433"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Saif Khan Mohammed","raw_affiliation_strings":["Department of Electrical Engineering and the Bharti School of Telecommunication Technology and Management, Indian Institute of Technology Delhi, New Delhi, India"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and the Bharti School of Telecommunication Technology and Management, Indian Institute of Technology Delhi, New Delhi, India","institution_ids":["https://openalex.org/I68891433"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5100740645"],"corresponding_institution_ids":["https://openalex.org/I68891433"],"apc_list":null,"apc_paid":null,"fwci":4.6921,"has_fulltext":false,"cited_by_count":36,"citation_normalized_percentile":{"value":0.95618875,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":100},"biblio":{"volume":"12","issue":"9","first_page":"1484","last_page":"1488"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11873","display_name":"PAPR reduction in OFDM","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/T11873","display_name":"PAPR reduction in OFDM","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/T12146","display_name":"Power Line Communications and Noise","score":0.9843999743461609,"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":0.9825000166893005,"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/channel","display_name":"Channel (broadcasting)","score":0.6741085052490234},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.623053252696991},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.581813395023346},{"id":"https://openalex.org/keywords/doppler-effect","display_name":"Doppler effect","score":0.5355494022369385},{"id":"https://openalex.org/keywords/modulation","display_name":"Modulation (music)","score":0.5117201805114746},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.498551607131958},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.48789331316947937},{"id":"https://openalex.org/keywords/minimum-mean-square-error","display_name":"Minimum mean square error","score":0.4724861979484558},{"id":"https://openalex.org/keywords/time-domain","display_name":"Time domain","score":0.4507741928100586},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3672955632209778},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.330325186252594},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.30596989393234253},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1815832555294037},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.11627349257469177},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10025522112846375},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.09313368797302246},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.07208812236785889}],"concepts":[{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6741085052490234},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.623053252696991},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.581813395023346},{"id":"https://openalex.org/C142757262","wikidata":"https://www.wikidata.org/wiki/Q76436","display_name":"Doppler effect","level":2,"score":0.5355494022369385},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.5117201805114746},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.498551607131958},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.48789331316947937},{"id":"https://openalex.org/C90652560","wikidata":"https://www.wikidata.org/wiki/Q11091747","display_name":"Minimum mean square error","level":3,"score":0.4724861979484558},{"id":"https://openalex.org/C103824480","wikidata":"https://www.wikidata.org/wiki/Q185889","display_name":"Time domain","level":2,"score":0.4507741928100586},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3672955632209778},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.330325186252594},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.30596989393234253},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1815832555294037},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.11627349257469177},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10025522112846375},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.09313368797302246},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.07208812236785889},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2023.3274936","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2023.3274936","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":18,"referenced_works":["https://openalex.org/W210359992","https://openalex.org/W2106977330","https://openalex.org/W2888002205","https://openalex.org/W2899406779","https://openalex.org/W2950013137","https://openalex.org/W2962951066","https://openalex.org/W2963114949","https://openalex.org/W3033820925","https://openalex.org/W3040500704","https://openalex.org/W3082571270","https://openalex.org/W3082907477","https://openalex.org/W3120875796","https://openalex.org/W3140555703","https://openalex.org/W3160738540","https://openalex.org/W3164364176","https://openalex.org/W3169454332","https://openalex.org/W4292981572","https://openalex.org/W4298042201"],"related_works":["https://openalex.org/W2782295999","https://openalex.org/W1970292246","https://openalex.org/W2162306796","https://openalex.org/W2015118744","https://openalex.org/W4247952185","https://openalex.org/W1642462315","https://openalex.org/W2005619368","https://openalex.org/W1879092539","https://openalex.org/W2526155427","https://openalex.org/W1976629859"],"abstract_inverted_index":{"We":[0],"propose":[1,55],"a":[2,103],"low-complexity":[3],"channel":[4,42,58,71,75],"estimation":[5,59,79,107],"method":[6,60,98],"for":[7,73],"Orthogonal":[8],"Time":[9],"Frequency":[10],"Space":[11],"(OTFS)":[12],"modulation":[13],"based":[14],"systems.":[15],"Two":[16],"important":[17],"aspects":[18],"of":[19,37],"OTFS":[20],"modulation,":[21],"namely,":[22],"(i)":[23],"fine":[24],"delay-Doppler":[25],"(DD)":[26],"resolution":[27],"which":[28,61],"results":[29],"in":[30],"path":[31],"separation":[32],"and,":[33],"(ii)":[34],"the":[35,38,65,70],"separability":[36],"effective":[39],"DD":[40],"domain":[41,47,50],"gain":[43,72],"expression":[44],"into":[45],"delay":[46],"and":[48,69,85],"Doppler":[49,67],"terms,":[51],"are":[52],"used":[53],"to":[54,92,101],"an":[56],"iterative":[57],"s":[62],"eparately":[63],"estimates":[64],"delay,":[66],"shift":[68],"each":[74],"path.":[76],"The":[77,96],"proposed":[78,97],"does":[80],"not":[81],"require":[82],"matrix":[83],"inversion":[84],"therefore":[86],"has":[87],"lower":[88],"complexity":[89],"when":[90],"compared":[91],"other":[93,113],"known":[94],"methods.":[95,114],"is":[99],"shown":[100],"achieve":[102],"normalized":[104],"mean":[105],"square":[106],"error":[108],"(NMSE)":[109],"performance":[110],"better":[111],"than":[112]},"counts_by_year":[{"year":2025,"cited_by_count":20},{"year":2024,"cited_by_count":12},{"year":2023,"cited_by_count":4}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}