{"id":"https://openalex.org/W7081926339","doi":"https://doi.org/10.1109/lcomm.2025.3608451","title":"OTFS Channel Estimation With Frequency Domain Spectral Shaping and Extension","display_name":"OTFS Channel Estimation With Frequency Domain Spectral Shaping and Extension","publication_year":2025,"publication_date":"2025-09-12","ids":{"openalex":"https://openalex.org/W7081926339","doi":"https://doi.org/10.1109/lcomm.2025.3608451"},"language":"en","primary_location":{"id":"doi:10.1109/lcomm.2025.3608451","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2025.3608451","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 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":null,"display_name":"Preeti Pathak","orcid":"https://orcid.org/0009-0004-5738-7696"},"institutions":[{"id":"https://openalex.org/I4210121466","display_name":"Indian Institute of Technology Bhilai","ror":"https://ror.org/02sscsx71","country_code":"IN","type":"education","lineage":["https://openalex.org/I4210121466"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"Preeti Pathak","raw_affiliation_strings":["Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India"],"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India","institution_ids":["https://openalex.org/I4210121466"]}]},{"author_position":"middle","author":{"id":null,"display_name":"K. M. Akbar Basha","orcid":"https://orcid.org/0000-0002-7078-9452"},"institutions":[{"id":"https://openalex.org/I4210121466","display_name":"Indian Institute of Technology Bhilai","ror":"https://ror.org/02sscsx71","country_code":"IN","type":"education","lineage":["https://openalex.org/I4210121466"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"K. M. Akbar Basha","raw_affiliation_strings":["Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India"],"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India","institution_ids":["https://openalex.org/I4210121466"]}]},{"author_position":"last","author":{"id":null,"display_name":"T. V. Sreejith","orcid":"https://orcid.org/0000-0002-4920-1896"},"institutions":[{"id":"https://openalex.org/I4210121466","display_name":"Indian Institute of Technology Bhilai","ror":"https://ror.org/02sscsx71","country_code":"IN","type":"education","lineage":["https://openalex.org/I4210121466"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"T. V. Sreejith","raw_affiliation_strings":["Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India"],"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, IIT Bhilai, Durg, India","institution_ids":["https://openalex.org/I4210121466"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210121466"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.60159227,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"29","issue":"11","first_page":"2661","last_page":"2665"},"is_retracted":false,"is_paratext":false,"is_xpac":true,"primary_topic":{"id":"https://openalex.org/T12157","display_name":"Geochemistry and Geologic Mapping","score":0.6355999708175659,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12157","display_name":"Geochemistry and Geologic Mapping","score":0.6355999708175659,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T13067","display_name":"Geological Modeling and Analysis","score":0.026900000870227814,"subfield":{"id":"https://openalex.org/subfields/1906","display_name":"Geochemistry and Petrology"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T14311","display_name":"Electrical and Electromagnetic Research","score":0.021900000050663948,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.6136999726295471},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.6055999994277954},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5867999792098999},{"id":"https://openalex.org/keywords/impulse-response","display_name":"Impulse response","score":0.5425999760627747},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.5037000179290771},{"id":"https://openalex.org/keywords/guard-interval","display_name":"Guard interval","score":0.4814999997615814},{"id":"https://openalex.org/keywords/pilot-signal","display_name":"Pilot signal","score":0.47540000081062317},{"id":"https://openalex.org/keywords/impulse","display_name":"Impulse (physics)","score":0.4668000042438507},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.45829999446868896},{"id":"https://openalex.org/keywords/bandwidth-extension","display_name":"Bandwidth extension","score":0.4530999958515167}],"concepts":[{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.6136999726295471},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.6055999994277954},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5867999792098999},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5839999914169312},{"id":"https://openalex.org/C72279823","wikidata":"https://www.wikidata.org/wiki/Q1139726","display_name":"Impulse response","level":2,"score":0.5425999760627747},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.5037000179290771},{"id":"https://openalex.org/C2777796584","wikidata":"https://www.wikidata.org/wiki/Q1132816","display_name":"Guard interval","level":4,"score":0.4814999997615814},{"id":"https://openalex.org/C197264572","wikidata":"https://www.wikidata.org/wiki/Q2095206","display_name":"Pilot signal","level":3,"score":0.47540000081062317},{"id":"https://openalex.org/C70836080","wikidata":"https://www.wikidata.org/wiki/Q837940","display_name":"Impulse (physics)","level":2,"score":0.4668000042438507},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.45829999446868896},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.45809999108314514},{"id":"https://openalex.org/C9387945","wikidata":"https://www.wikidata.org/wiki/Q4854770","display_name":"Bandwidth extension","level":4,"score":0.4530999958515167},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.44209998846054077},{"id":"https://openalex.org/C56296756","wikidata":"https://www.wikidata.org/wiki/Q840922","display_name":"Bit error rate","level":3,"score":0.43950000405311584},{"id":"https://openalex.org/C11930861","wikidata":"https://www.wikidata.org/wiki/Q181417","display_name":"Frequency modulation","level":3,"score":0.41830000281333923},{"id":"https://openalex.org/C103824480","wikidata":"https://www.wikidata.org/wiki/Q185889","display_name":"Time domain","level":2,"score":0.4099000096321106},{"id":"https://openalex.org/C102755159","wikidata":"https://www.wikidata.org/wiki/Q7259683","display_name":"Pulse shaping","level":3,"score":0.3846000134944916},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3702000081539154},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.34540000557899475},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.3427000045776367},{"id":"https://openalex.org/C168110828","wikidata":"https://www.wikidata.org/wiki/Q1331626","display_name":"Spectral density","level":2,"score":0.32519999146461487},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.32330000400543213},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.31369999051094055},{"id":"https://openalex.org/C2778029271","wikidata":"https://www.wikidata.org/wiki/Q5421931","display_name":"Extension (predicate logic)","level":2,"score":0.3102000057697296},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.3061999976634979},{"id":"https://openalex.org/C8590192","wikidata":"https://www.wikidata.org/wiki/Q1054694","display_name":"Frequency response","level":2,"score":0.2939000129699707},{"id":"https://openalex.org/C54926389","wikidata":"https://www.wikidata.org/wiki/Q7575188","display_name":"Spectral envelope","level":2,"score":0.28299999237060547},{"id":"https://openalex.org/C49456836","wikidata":"https://www.wikidata.org/wiki/Q666814","display_name":"Delay spread","level":4,"score":0.28139999508857727},{"id":"https://openalex.org/C30049272","wikidata":"https://www.wikidata.org/wiki/Q6555326","display_name":"Spectral density estimation","level":3,"score":0.2655999958515167},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2651999890804291},{"id":"https://openalex.org/C142433447","wikidata":"https://www.wikidata.org/wiki/Q7806653","display_name":"Time\u2013frequency analysis","level":3,"score":0.25690001249313354},{"id":"https://openalex.org/C150251571","wikidata":"https://www.wikidata.org/wiki/Q2066418","display_name":"Pulse-frequency modulation","level":5,"score":0.2515999972820282}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lcomm.2025.3608451","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2025.3608451","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1998454576","https://openalex.org/W2612254130","https://openalex.org/W2888002205","https://openalex.org/W2950013137","https://openalex.org/W2963817362","https://openalex.org/W3040500704","https://openalex.org/W3164274111","https://openalex.org/W3172410657","https://openalex.org/W3200021459","https://openalex.org/W4289829951","https://openalex.org/W4323521102","https://openalex.org/W4380451120","https://openalex.org/W4387870830"],"related_works":[],"abstract_inverted_index":{"The":[0,68],"widely":[1],"used":[2],"embedded":[3],"impulse":[4,73],"pilot":[5,23,92,99,111],"for":[6,102],"channel":[7,40,57,66,103],"estimation":[8,58,104],"of":[9,51],"orthogonal":[10],"time":[11],"frequency":[12,29],"space":[13,19],"modulation":[14,129],"(OTFS)":[15],"needs":[16],"ample":[17],"guard":[18,44],"between":[20],"data":[21,93],"and":[22,46,63,79,95,113],"symbols.":[24],"This":[25],"letter":[26],"proposes":[27],"a":[28,55,133],"domain":[30,65,78],"pulse":[31],"shaping":[32,87],"with":[33,88,117,132],"spectral":[34,89,115],"extension":[35,90,116],"to":[36],"reduce":[37,42],"the":[38,43,48,61,72,76,83,97,119],"effective":[39],"length,":[41],"space,":[45],"improve":[47],"bandwidth":[49],"efficiency":[50],"OTFS.":[52],"We":[53],"propose":[54],"two-stage":[56],"method":[59,70],"exploring":[60],"delay-time":[62,77],"time-frequency":[64],"properties.":[67],"proposed":[69],"extracts":[71],"response":[74],"in":[75,105,137],"transforms":[80],"it":[81],"into":[82],"delay-Doppler":[84],"domain.":[85],"Pulse":[86],"reduces":[91],"interactions":[94],"relaxes":[96],"strong":[98],"power":[100,112],"required":[101],"traditional":[106],"impulse-based":[107],"methods.":[108],"By":[109],"reducing":[110],"applying":[114],"shaping,":[118],"bit":[120],"error":[121],"rate":[122],"improves":[123],"by":[124],"2\u20138":[125],"dB":[126,135],"across":[127],"different":[128],"orders,":[130],"along":[131],"3\u20134":[134],"reduction":[136],"PAPR.":[138]},"counts_by_year":[],"updated_date":"2025-12-21T01:58:51.020947","created_date":"2025-10-10T00:00:00"}
